Publicaties

Overzicht

I. Artikels in internationale gereviewde tijdschriften

Broothaerts, W., Van Laere, A., Witters, R., Préaux, G., Decock, B., Van Damme, J., Vendrig, J.C. (1989) Purification and N-terminal sequencing of style glycoproteins associated with expression of self-incompatibility in Petunia hybrida. Plant Mol. Biol. 14: 93-102.

Broothaerts, W., Vanvinckenroye, P., Decock, B., Van Damme, J., Vendrig, J.C. (1991) Petunia hybrida S-proteins: ribonuclease activity and the role of their glycan side chains in self-incompatibility. Sex. Plant Reprod. 4: 258-266.

De Bondt, A., Eggermont, K., Druart, Ph., De Vil, M., Goderis, I., Vanderleyden, J., Broekaert, W. (1994) Agrobacterium-mediated transformation of apple (Malus x domestica Borkh.): an assessment of factors affecting gene transfer efficiency during early transformation steps. Plant Cell Rep. 13: 587-593.

De Witte, K., Keulemans, J. (1994) Restrictions of the efficiency of haploid plant production in apple, cultivar Idared, through parthenogenesis in situ. Euphytica 77: 141-146.

Keulemans, J., De Witte, K. (1994) Plant regeneration from cotyledons and embryonic axes in apple: sites of reaction and effect of pre-culture in the light. Euphytica 77: 135-139.

Broothaerts, W., Janssens, G.A., Proost, P., Broekaert, W.F. (1995) cDNA cloning and molecular analysis of two self-incompatibility alleles from apple. Plant Mol. Biol. 27: 499-511.

Janssens, G.A., Goderis, I.G., Broekaert, W.F., Broothaerts, W. (1995) A molecular method for S-allele identification in apple based on allele-specific PCR. Theor. Appl. Genet. 91: 691-698.

Broothaerts, W., Janssens, G.A., Broekaert, W.F., Verdoodt, L., Keulemans, J. (1996) The self-incompatibility gene in appel and determination of the S-genotype of apple cultivars by PCR. Acta Hort. 423: 103-110 (gereviewd nummer).

De Bondt, A., Eggermont, K., Penninckx, I., Goderis, I., Broekaert, W. (1996) Agrobacterium-mediated transformation of apple (Malus x domestica Borkh.): an assessment of factors affecting regeneration of transgenic plants. Plant Cell Rep. 15: 549-554.

De Witte, K., Vercammen, J., Van Daele, G., Keulemans, J. (1996) Fruit set, seed set and weight in apple as influenced by emasculation, self-pollination and cross-pollination. Acta Horticulturae 423: 177-184. (gereviewd nummer)

Mourgues, F., Chevreau, E., Lambert, C., De Bondt, A. (1996) Efficient Agrobacterium-mediated transformation and recovery of transgenic plants from pear (Pyrus communis L.). Plant Cell Rep. 16: 245-249.

Keulemans, J., Brusselle, A., Vercammen, J., Van Daele, G. (1997) Fruit weight in apple as influenced by seed number and pollenizer. Acta Horticulturae 423: 201-210 (gereviewd nummer)

Richman, A.D., Broothaerts, W., Kohn, J.R. (1997) Self-incompatibility RNases from three plant families: homology or convergence? Am. J. Bot. 84: 912-917.

Cook, N.C., Rabe, E., Keulemans, J., Jacobs, G. (1998) The expression of acrotony in decidious fruit trees: a study of the apple rootstock M9. J. Am. Soc. Hort. Sci. 123: 30-34.

De Smedt, V., Pauwels, E., De Baerdemaekers, J., Nicolaï, B. (1998) Microscopic observation of mealiness in apples: A quantitative approach. Postharvest biology and technology 14: 151-158.

Verdoodt, L., Van Haute, A., I.J. Goderis, K, .De Witte, K., Keulemans, J., Broothaerts, W. (1998) Use of the multi-allelic self-incompatibility gene in apple to assess homozygocy in shoots obtained through haploid induction. Theor. Appl. Genet. 96: 294-300.

Certal, A.C., Sanchez, A.M., Kokko, H., Broothaerts, W., Oliveira, M.M., Feijó, J.A. (1999) S-RNases in apple are expressed in the pistil along the pollen tube growth path. Sex. Plant Reprod. 12: 94-98.

Feijo, J.A., Certal, C.A., Boavida, L., Van Nerum, I., Valdiviesso, T., Oliveira, M.M., Broothaerts, W. (1999) Advances on the study of sexual reproduction in the cork-tree (Quercus suber L.), chestnut (Castanea sativa Mill.) and in Rosaceae (apple and almond). In: G. Cai, M. Cresti, A. Moscatelli (eds.) Fertilization in higher plants. Springer Berlin, pp. 377-396.

Van Nerum, I., Certal, A.C., Oliveira, M.M., Broothaerts, W. (2000) PD1, an S-like RNase gene from a self-incompatible cultivar of almond. Plant Cell Reports 19: 1108-1114.

Broothaerts, W., Wiersma, P.A., Lane, W.D. Multiplex PCR combining transgene and S-allele control primers to simultaneously confirm cultivar and transformation in apple. HortScience (in press)

Broothaerts, W., Baochun, L., Randall, E., Lane, W.D., Wiersma, P. Fast apple and tobacco leaf polyphenol oxidase activity assay for screening of transgenic plants. J. Agr. Food Chem. (in press)

Broothaerts, W., Van Nerum, I., Janssens, G.A., Broekaert, W.F., Keulemans, J. Engineering self-fertility in self-incompatible tree fruit crops. (in preparation)

Broothaerts, W., Van Nerum, I., Bester, A., Van Haute, S., Coppens, S., Pauwels, E., Keulemans, J. Determination of the S-alleles in varieties of apple. (in preparation)

Cook, N.C., Verhaegen, K., Keulemans, J., Jacobs, G. Manipulations of acrotony in one-year-old shoots of the apple rootstock M9. J. S. Afr. Soc. Hortic. Science (accepted).

De Witte, K., Verdoodt, L., Broothaerts, W., Keulemans, J. Homozygous plant production in apple by anther culture: embryo induction, plant regeneration, ploidy level and homozygocy. Theor. Appl. Genet. (in preparation).

Schroeven, S., De Witte, K., Keulemans, J. Microspore culture in apple: effect of cold and colchicine as inductive treatments on the sporophytic development. Plant Cell Tiss. Cult. (in press).

Van Nerum, I., Geerts, M., Van Haute, A., Keulemans, J., Broothaerts, W. Re-examination of the self-incompatibility genotype of apple cultivars containing putative ‘new’ S-alleles. Theoretical and Applied Genetics (accepted).

II. Artikels in andere wetenschappelijke tijdschriften

II.a. Artikels in internationale wetenschappelijke tijdschriften zonder reviewpolitiek

Keulemans, J. (1990) The influence of the choice of cultivars on cropping behaviour, flower-bud formation and fruit-set of plums under Belgian conditions. Acta Horticuturae 283: 117-129.

Wustenberghs, H., Verheyen, J., Keulemans, J. (1993) Preliminary experiences with superintensive, protected growing of sweet cherries. Acta Horticulturae 349: 59-62.

Eyssen, R. (1994). Apple breeding for quality, disease resistance and growth habit. Acta Horticulturae 355: 173-181.

Keulemans, J. (1994) Pollination and fruit set in self-incompatible plum cultivars. Acta Horticulturae 359: 260-268.

Wustenberghs, H., Belmans, K., Keulemans, J. (1994) Preliminary evaluation of the suitability of plum cultivars for intensive culture, with special emphasis on bare wood formation. Acta Horticulturae 359: 101-106.

Belmans, K., Keulemans, J., (1996) A study of some fruit skin characteristics in relation to the susceptibility of cherry fruit to cracking. Acta Horticulturae 410: 547-550.

Wustenberghs, H., Belmans, K., Keulemans, J. (1996) The effect of summer pruning during the first leaf on the growth and flower bud formation of sweet cherries. Acta Horticulturae 410: 301-306.

Wustenberghs, H., Keulemans, J. (1997) A method for superintensive, protected culture of sweet cherries. Acta Horticulturae 451: 633-636.

Wustenberghs, H., Keulemans, J. (1997) A comparison of 3 plum tree training systems during the first five years of growth. Acta Horticulturae 451: 625-631.

II.b. Artikels in vakgerichte tijdschriften (alleen publicaties met wetenschappelijk karakter)

Keulemans, J., Eyssen, R. (1990) Pollinisation et fécondation chez Elstar. Le Fruit Belge 58 (429): 45-52.

Belmans, K., Verheyen, J., Keulemans, J. (1991) Vruchtdunning en vruchtkwaliteit bij pruim. Agricontact 224 (1): 1-5.

Belmans, K., Verheyen, J., Keulemans, J. (1991) Vruchtdunnen en vruchtkwaliteit bij pruimen. De Boer en de Tuinder 97 (17): 23.

Belmans, K., Keulemans, J., Kemp, H., Wertheim, S.J. (1992) Perspectieven voor de zoete kersenteelt. Fruitteelt 82 (2): 16-18.

Wustenberghs, H., Verheyen, J., Keulemans, J. (1992) De superintensieve teelt van zoete kersen. Belgische Fruitrevue 45 (2): 54-56.

Keulemans, J. (1993) Perspectives nouvelles en amélioration du pommier. Le Fruit Belge 61 (445): 147-151.

Wustenberghs, H., Keulemans, J. (1993) Kan Promalin het vertakken van zoete kersen bevorderen ? Belgische Fruitrevue: 45 (4): 154-155.

Wustenberghs, H. (1993) Taille d'été chez les arbres fruitiers à noyau: influence sur la croissance et la formation des boutons. Le Fruit Belge 61 (443): 67-69.

Eyssen, R. (1994) Gen-Transformation bei Apfel: tierischer Helfer und bombardierte Gene. Deutsche Baumschule 46: 116-119.

Keulemans, J. (1994) Zelfbestuivende appelaars via genetische manipulatie. Tuinbouw Facts 6 (247): 27-28.

Moons, P., Wustenberghs, H., Deckers, J.A., Keulemans, J. (1994) Bodemgeschiktheid voor zoete kers. Fruitteelt Nieuws 7 (18): 24-27.

Moons, P., Wustenberghs, H., Deckers, J.A., Keulemans, J. (1994) Aptitude des sols à la culture du cerisier à fruits doux. Le Fruit Belge 452: 180-184.

Wustenberghs, H., Pauwels, E., Deckers, J.A., Keulemans, J. (1995) Perceelskeuze voor zoete kers. Fruitteelt Nieuws 8 (20): 20-22.

Wustenberghs, H., Pauwels, E., Deckers, J.A., Keulemans, J. (1995) Choix des parcelles pour le cerisier à fruits doux. Le Fruit Belge 458: 167-171.

Kemp, H., Wertheim, S.J., Wustenberghs, H. (1999) Kers (Prunus avium L. en Prunus cerasus L.). In: 19e Rassenlijst voor groot-fruitgewassen 1999. CPRO-DLO, Wageningen, NL, pp. 145-172.

Kemp, H., Roelofs, F.P.M.M., Wertheim, S.J., Wustenberghs, H. (1999) Pruim (Prunus spp.). In: 19e Rassenlijst voor groot-fruitgewassen 1999. CPRO-DLO, Wageningen, NL, pp. 124-144.

Wustenberghs, H., Keulemans, J. (1999) Le cérisier a fruits doux: amélioration de la qualité des plants. Le Fruit Belge 67 (480): 106-110.

Keulemans, J., Pauwels, E. (2000) Recherche de nouvelles variétés de pommes pour l’avenir. Le Fruit Belge 68 n° 488: 185-188.

III. Mededelingen op internationale congressen en symposia (proceedings)

III.a. Integraal gepubliceerd in proceedings

De Witte, K., Keulemans, J. (1994) Restrictions of the efficiëncy of haploid plant production in apple, cultivar Idared, through parthenogenesis in situ. Proceedings of the Eucarpia Fruit Breeding Section Meeting, Wädenswil, Switzerland, Aug. 30-Sept. 3, 1993. In: H. Schmidt, M. Kellerhals (eds.) Progress in Temperate Fruit Breeding. Kluwer Academic Publishers, Dordrecht, pp. 403-408.

Eyssen, R. and Brusselle, A. (1994) Occurrence of mildew on apple seedlings at different ages. 10ème colloque sur recherches fruitières, Angers, France, 197-202.

Keulemans, J., Eyssen, R., Colda, G. (1994) Improvement of seed set and seed germination in apple. Proceedings of the Eucarpia Fruit Breeding Section Meeting, Wädenswil, Switzerland, Aug. 30-Sept. 3, 1993. In: H. Schmidt, M. Kellerhals (eds.) Progress in Temperate Fruit Breeding. Kluwer Academic Publishers, Dordrecht, pp. 225-228.

Keulemans, J., De Witte, K. (1994) Plant regeneration from cotyledons and embryonic axes in apple: sites of reaction and effect of pre-culture in the light. Proceedings of the Eucarpia Fruit Breeding Section Meeting, Wädenswil, Switzerland, Aug. 30-Sept. 3, 1993. In: H. Schmidt, M. Kellerhals (eds.) Progress in Temperate Fruit Breeding. Kluwer Academic Publishers, Dordrecht, pp. 371-375.

Broothaerts, W., De Bondt, A., De Witte, K., Pauwels, E., Keulemans, J., (1997) Biotechnology in a fruit tree breeding programma. 11^th Forum for Applied Biotechnology. Med. Fac. Landbouww. Univ. Gent 62: 1413-1419.

Broothaerts, W., Kenis, K., Keulemans, K., De Witte, K. (1998) AFLP analysis in apple cultivars and in their putatively homozygous offspring. Abstracts XXV International Horticultural Congress, 2-7 August 1998, Brussels, 448.

Broothaerts, W., Kenis, K., Keulemans, K., De Witte, K. (2000) AFLP and S-gene analysis in apple cultivars and in their putatively homozygous offspring. Proceedings of the XXV International Horticultural Congress, 2-7 August 1998, Brussels. Acta Horticulturae 521: 267-273.

Broothaerts, W., De Cubber, K., Coppens, S., Zaman, S., Keulemans, J. (2000) The feasibility of fungal disease resistance in apple by expression of antimicrobial peptide genes. Proceedings of the XXV International Horticultural Congress, 2-7 August 1998, Brussels. Acta Horticulturae 521: 91-94.

De Bondt, A., Zaman, S., Broekaert, W., Cammue, B., Keulemans, J. (1998) Genetic transformation of apple (Malus x domestica Borkh.) for increased fungal resistance: In vitro antifungal activity in protein extracts of transgenic apple expressing Rs-AFP2 or Ace-AMP1. Proceedings of the Eucarpia Symposium on Fruit Breeding and Genetics, 1-6 September 1996, Oxford, UK. Acta Horticulturae 484: 565-569.

De Cubber, K., Broothaerts, W., Lenaerts, T., Keulemans, J. (2000) Progress on genetic transformation as a tool for increased resistance in apple. International Conference on Integrated Fruit Production, 27 juli-1 augustus, 1998 - Leuven. Acta Horticulturae 525: 309-316.

De Witte, K., Schroeven, S., Broothaerts, W., Keulemans, J. (1998) Haploid induction in apple by anther culture. Proceedings of the Eucarpia Symposium on Fruit Breeding and Genetics, 1-6 September 1996, Oxford, UK.Acta Horticulturae 484: 527-530.

De Witte, K. (2000) Review of research at Fruitteeltcentrum on the production of homozygous plants through androgenesis in vitro and parthenogenesis in situ. Proceedings of the XXV International Horticultural Congress, 2-7 August 1998, Brussels. Acta Horticulturae 520: 135-146.

Janssens, G.A., Van Haute, A.M., Broekaert, W.F., Keulemans, J., Broothaerts, W. (1998) PCR analysis of self-incompatibility alleles in apple applied to leaves, seed embryos and in vitro shoots. Proceedings of the Eucarpia Symposium on Fruit Breeding and Genetics, 1-6 September 1996, Oxford UK. Acta Horticulturae 484: 403-407.

Kemp, H., Wustenberghs, H. (1998) Screening of plums and prunes for fresh consumption, 1988-1997. Acta Horticulturae 478: 207-216.

Keulemans, J., Claes, K., Brusselle, A., Eyssen, R., Pauwels, E. (1998) Considerations on scab susceptibility in apple. Proceedings of the Eucarpia Symposium on Fruit Breeding and Genetics, 1-6 September 1996, Oxford, UK. Acta Horticulturae 484: 507-512.

Pauwels, E., Eyssen, R., Keulemans, J. (1998) Parthenocarpy and apple breeding. Proceedings of the Eucarpia Symposium on Fruit Breeding and Genetics, 1-6 September 1996, Oxford, UK. Acta Horticulturae 484: 55-59.

Pauwels, E., Eyssen, R., Keulemans, J. (1998) Seed dormancy and bud break of apple seedlings. Proceedings of the Eucarpia Symposium on Fruit Breeding and Genetics, 1-6 September 1996, Oxford, UK. Acta Horticulturae 484: 119-122.

Pauwels, E., Keulemans, J. (1998) Breeding for scab resistance in apple: evaluation of resistance in the greenhouse and in the field. Proceedings of the International Conference on Integrated Fruit Production, 27 juli-1 augustus 1998, Leuven. Acta Horticulturae 525: 505-511.

Wustenberghs, H. (1998) Screening of sweet cherry cultivars in flanders 1988-1996. Acta Horticulturae 468, 131-134.

Wustenberghs, H., Moons, P., Pauwels, E., Keulemans, J., Deckers, J.A. (1998) Soil suitability for sweet cherry culture on a dwarfing rootstock. Acta Horticulturae 468: 491-504.

Latet, G., Keulemans, J., Meesters, P. (1999) Aspect of the influence of pollination methods and pollination time on the fruitset of red currants (Ribes rubrum L.) Acta Horticulturae 505: 145-151.

De Cubber, K., Broothaerts, W., Keulemans, J. (1999) Expression of antimicrobial peptides for fungal resistance in transgenic apple. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, Germany, C16.

De Wit, I., Pauwels, E., Keulemans, J. (1999) Different growth habits and correlations between growth characteristics in progenies with a common Co-gene parent. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, Germany, B20.

De Witte, K., Keulemans, J. (1999) Protocols for homozygous plant production in apple (Malus x domestica) by parthenogenesis in situ. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, Germany, Lecture.

De Witte, K., Keulemans, J. (1999) Influence of pollination techniques, plant growth regulators for fruit set and ex vitro seed germination on homozygous plant production by parthenogenesis in situ in apple. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, Germany, B23.

De Witte, K., Keulemans, J. (1999) Homozygous plant production in apple by parthenogenesis in situ: improvement of the pollination stimulus for parthenogenic egg cell development. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, Germany, B24.

Geysen, S., Hoet, M., Schroeven, S., Keulemans, J. (1999) Shoot regeneration from androgenic callus of different apple cultivars obtained via anther culture. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, Germany, C23.

Kenis, K., De Witte, K., Keulemans, J. (1999) The use of microsatellites to investigate the homozygous status of apple plants obtained by anther culture and parthenogenesis in situ. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, C9.

Pauwels, E., Keulemans, J. (1999) Inheritance and physiology of growth characteristics in progenies from crosses of apple cultivars, differing in growth habit. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, Germany, Acta Horticulturae (in press), B21.

Pauwels, E., Keulemans, J. (1999) Inheritance of parthenocarpy and screening of cultivars for parthenocarpic tendencies in apple. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, Germany, B22.

Van Nerum, I., Incerti, F., Keulemans, J., Broothaerts, W. (1999) Analysis of self-fertility in transgenic apple lines, transformed with an S-allele in sense or anti-sense direction. Symposium on Fruit Breeding & Genetics, 6-10 September 1999, Dresden, Germany, C15.

Broothaerts, W., De Cubber, K., Zaman, S., Coppens, S., Keulemans, J. (1998) The feasibility of fungal disease resistance in apple by expression of antimicrobial peptide genes. XXV International Horticultural Congress, 2-7 August 1998, Brussels. Acta Horticulturae 521: 91-94.

III.b. Niet gepubliceerd of slechts beschikbaar als abstract

Belmans, K., Keulemans, J., de Barsy, T., Bronchart, R. (1990) Influence of sweet cherry epidermal characters on the susceptibility to fruit cracking. Proceedings of the 12th International Horticultural Congress, Firenze, abstract 637.

Belmans, K., Keulemans, J., Hendrickx, M., Podoor, N., Schoonjans, L. (1990) Influence of the time of thinning Sanctus Hubertus plums on yield and fruit quality. Proceedings of the 12th International Horticultural Congress, Firenze, abstracts 3321.

Broothaerts, W., Vendrig, J.C. (1990) Self-incompatibility proteins from styles of Petunia hybrida have ribonuclease activity. 7th FESPP congress, Umea, Sweden. Physiol. Plant. 79: 43.

De Bondt, A., Druart, Ph., Vanderleyden, J. Cammue, B.P.A. and Broekaert, W.F. (1990) Shoot regeneration from leaves of apple (Malus x domestica) cv. Jonagold. Arch. Int. Physiol. Biochem. 98: 32.

Keulemans, J., Wustenberghs, H. (1990) Water uptake and cracking of sweet cherries. Proceedings of the 12th International Horticultural Congress, Firenze, abstract 286.

Keulemans, J., Schrevens, E. (1990) The influence of mineral nutrients on flower-bud formation and pollen quality of apple. Proceedings of the 12th International Horticultural Congress, Firenze, abstract 4106.

Broothaerts, W., De Bondt, A., Cammue, B.P.A., Broekaert, W.F. (1991) Genetic evidence for the overall involvement of ribonucleases in gametophytic self-incompatibility. Third International Congress of Plant Molecular Biology, Tucson, USA, abstract 544.

Broothaerts, W., Vanderleyden, J., Cammue, B.P.A., Broekaert, W.F. (1992) Analysis of self-incompatibility in apple by PCR. 8th FESPP congress, Antwerp, Belgium. Physiol. Plant. 85: 42.

Broothaerts, W., Broekaert, W.F. (1992) Self-incompatibility problems in apple orchards. International Workshop on Molecular Control of Flower Development and Sexual Reproduction, Amsterdam, 43.

De Witte, K., Keulemans, J. (1992) Androgenesis in apple: importance of the plant material. XIIIth Eucarpia congress, July 6-11th 1992, Angers, France, 157-158.

Eyssen, R., Keulemans, J., (1992) Early screening methods in apple breeding. XIIIth Eucarpia congress, July 6-11th 1992, Angers, France, 631-632.

De Witte, K., Keulemans, J. (1993) Actual situation of induction of haploids on apple through androgenesis and parthenogenesis in situ. Gametic Embryogenesis Workshop, June 1993, Dröbak, Norway.

De Witte, K., Keulemans, J., (1994) Recent progress on haploid induction by anther culture in apple (Malus x domestica Borkh). Proceedings of the 13th International Congress on Sexual Plant Reproduction, July 10-14, Vienna, Austria, 66.

Wustenberghs, H., Belmans, K., Keulemans, J. (1994) The influence of cuticle and stomata on the cracking susceptibility of sweet cherries. Michigan State University Proceedings, International Conference on Cracking of Cherries, February 4-5, Traverse City, Michigan, 6.

Wustenberghs, H., Belmans, K., Keulemans, J. (1994) The influence of nitrogen on the cracking susceptibility of sweet cherries. Michigan State University Proceedings, International Conference on Cracking of Cherries, February 4-5, Traverse City, Michigan, 51.

Broothaerts, W. (1995) Self-incompatibility genes. Concerted Action on Genetic Transformation of Fruit Trees for the Safer Control of Pests and Diseases and for the Improvement of Fruit Harvesting Quality. 1995 Progress Report to the Commission (lecture Malmo).

De Witte, K., Keulemans, J. (1995) Parthenogenesis in situ in apple: effect of irradiation dose, picking time and cold treatment on putative homozygous plant production. Book of abstracts symposium ‘Recent advances in plant biotechnology’, Oktober 2-6, Nitra, Slovak Republic, 161.

Janssens, G.A., Broothaerts, W. (1995) Transgenic apple shoots containing an antisense self-incompatibility gene. Concerted Action on Genetic Transformation of Fruit Trees for the Safer Control of Pests and Diseases and for the Improvement of Fruit Harvesting Quality. 1995 Progress Report to the Commission (lezing Wageningen).

Broothaerts, W., Janssens, G.A., Keulemans, J., Kokko, H., Sanchez, A., Feijo, J.A., Oliveira, M.M. (1996) Understanding the molecular basis of self-incompatibility in fruit tree species belonging to the Rosaceae family. Abstracts 14th International Congress of Sexual Plant Reproduction, February 18-23, Lorne, Australia, 70.

Broothaerts, W., Janssens, G.A., Keulemans, W. (1996) Attempting to understand the molecular basis of self-incompatibility in fruit tree species belonging to the Rosaceae family. SEB Annual Meeting, Lancaster, UK (invited lecture).

De Bondt, A. (1996) In vitro antifungal activity in desalted protein extracts of transgenic Jonagold expressing Rs-AFP2 or Ace-AMP1. Concerted Action on Genetic Transformation of Fruit Trees for the Safer Control of Pests and Diseases and for the Improvement of Fruit Harvesting Quality. 1996 Progress Report to the Commission (lecture Wageningen).

De Witte, K., Schroeven, S., Keulemans, J. (1996) Early evaluation of inductive treatments for sporophytic microspore development of apple induced by anther and microspore culture. Abstracts 14th International Congress of Sexual Plant Reproduction, February 18-23, Lorne, Australia, 103.

Sanchez, A.M., Feijo, J., Oliveira, M.M., Broothaerts, W. (1996) Immunolocalisation of self-incompatibility proteins in apple pistils. Concerted Action on Genetic Transformation of Fruit Trees for the Safer Control of Pests and Diseases and for the Improvement of Fruit Harvesting Quality. 1996 Progress Report to the Commission (lecture Lissabon).

Broothaerts, W., De Cubber, K., Zaman, S. (1997) The apple breeding programme at Fruitteeltcentrum K.U.Leuven. Concerted Action on Genetic Transformation of Fruit Trees for the Safer Control of Pests and Diseases and for the Improvement of Fruit Harvesting Quality. 1997 Progress Report to the Commission (lecture Derby, UK).

Broothaerts, W., Janssens, G., Keulemans, J. (1998) Molecular breeding for self-fertility in apple. Abstracts XVth International Congress on Sexual Plant Reproduction, Wageningen, August 16-21, Nederland, 16.

Broothaerts, W., De Cubber, K., Keulemans, J. (1998) Fungal Disease resistance in apple by expression of heterologous antimicrobial peptides. Abstracts XV Eucarpia Congress, September 20-25, Viterbo, Italy, 17.

De Wit, I., Duponcheel, A., Keulemans, J. (1998) Evolution of endodormancy in apple rootstock M9. XXV International Horticultural Congress, 2-7 August 1998, Brussels. Acta Horticulturae 517: 131-142.

De Witte, K., Schroeven, S., Broothaerts, W., Keulemans, J. (1998) Homozygous plant production for improved apple breeding. Abstracts XXV International Horticultural Congress, 2-7 August, 1998, Brussels, 154.

De Witte, K., Keulemans, J. (1998) Homozygous plant production in apple (Malus x domestica) by parthenogenesis in situ. Abstracts XVth International Congress on Sexual Plant Reproduction, August 16-21, Wageningen, Nederland, 23.

De Witte, K., Keulemans, J. (1998) Homozygous plant production in apple (Malus x domestica) by parthenogenesis in situ. Abstracts XV Eucarpia Congress, September 20-25, Viterbo, Italy, 84.

Keulemans, J., Pauwels, E., Porta, L., De Witte, K., Janssens, G., Broothaerts, W. (1998) Parthenocarpy and self pollination in apple: alternatives for cross pollination ? Abstracts XXV International Horticultural Congress, 2-7 August, 1998, Brussels, 16.

Martins, M.C., Ceral, A.C., Ferreira, E.L., Cordeiro, V., Monteiro, A.M., Van Nerum, I., Boskovic, R., Tobbutt, K., Tenreio, R., Feijó, J., Broothaerts, W., Oliveira, M.M. (1998) Molecular characterisation of Portugese almond varieties and study of their self-incompatibility. In: Abstracts of the Ist Ibero-American meeting on biotechnology, Portugal.

Pauwels, E., Keulemans, J. (1998) Seedling selection based on seed and bud dormancy in apple breeding. Abstracts XXV International Horticultural Congress, 2-7 August 1998, Brussels, 44

Pauwels, E., Keulemans, J. (1998) Influence of crossing parents on scab resistance in apple progenies. Abstracts XV Eucarpia Congress, September 20-25, Viterbo, Italy, 18.

Peirs, A., Parmentier, V., Wustenberghs, H., Keulemans, J. (1998) Comparison of quality evolution during storage between different cultivars of plums. Abstracts XXV International Horticultural Congress, 2-7 August 1998, Brussels, 373.

Van Nerum, I., Certal, A.C., Oliveira, M.M., Broothaerts, W. (1998) Identification of an S-like RNase gene from a self-incompatible cultivar of almond. Abstracts XVth International Congress on Sexual Plant Reproduction, August 16-21 1998, Wageningen, Nederland, 54.

Wustenberghs, H., Keulemans, J. (1998) Manipulation of the prolecptic ramification of sweet cherry and plum trees by the application of gibberellin 4+7 and 6-benzyladenin. Abstracts XXV International Horticultural Congress, 2-7 August, 1998, Brussels, 150.

Wustenberghs, H., Keulemans, J., Simon, P., Peusens, G. (1998) The influence of virus infections on the vegetative and generative growth of sweet and sour cherries. Abstracts XXV International Horticultural Congress, 2-7 August, 1998, Brussels, 9.

De Wit, I., Duponcheel, A., Keulemans, J. (1999) Influence of Paradormancy on Proleptic Branching of Apple Rootstock M9. Abstracts SASHS 8th Congress, January 24-27, South-Africa, 37.

Duponcheel, A., Pauwels, E., Keulemans, J. (1999) Durability of scab "Venturia inaequalis" resistance in apple and combination of different resistance sources. IOBC/WPRS bulletin. Fifth workshop on integrated control of pome fruit diseases, 24-27 August 1999, Angers, 55.

Keulemans, J., Broothaerts, W., Pauwels, E., Porta, L., Janssens, G., De Witte, K. (1999) Fruitset without pollinizers in apple: parthenocarpy and self-fertilisation. Abstracts SASHS 8th Congress, January 24-27, South-Africa, 8.

Pauwels, E., Keulemans, J. (1999) Inheritance of growth characteristics in progenies from crosses of apple cultivars, differing in growth habit. Abstracts SASHS 8th Congress, January 24-27, South-Africa, 37.

Van Nerum, I., Incerti, F., Keulemans, J., Broothaerts, W. (1999) Analysis of transgenic apple trees containing a sense or antisense S-gene construct. Abstracts International Conference on Pollen-Stigma Interactions, July 18-21, 1999, Oxford, 53.

IV. Mededelingen op andere congressen en bijeenkomsten

geen

Keulemans, J. (1992) Bestuiving, bevruchting en microklimaat bij pruim. NCBL cursus pruimenteelt (Hageland 5b), Glabbeek, 23 maart 1992.

Keulemans, J. (1992) Bestuiving in de fruitteelt. Proefstation voor de Fruitteelt, Wilhelminadorp (Nederland), 8 mei 1992.

Keulemans, J. (1992) Fruit breeding research. Onderzoekers Experimental Station Geneva - Cornell University, Geneva (New York State, USA), 18 mei 1992.

Keulemans, J. (1992) Het fruitteeltonderzoek van het Fruitteeltcentrum K.U.Leuven. Voorlichters IKC en DLV-Nederland, Heverlee, 17 juni 1992.

Keulemans, J. (1993) Amélioration du pommier. Ligue pomologique Namur-Liège-Gembloux, 17 maart 1993.

Keulemans, J. (1993) Pollination and fruit set in selfincompatible plum cultivars. 5th International Symposium Plum and Prune: Genetic, Breeding and Pomology, ISHS Hohenheim (Duitsland), 6 augustus 1993.

Keulemans, J. (1994) Recent progress on haploïd induction by anther culture in apple (Malus x domestica Borkh). 13th International Congress on sexual plant reproduction, Wenen (Oostenrijk), 14 juli 1994.

Keulemans, J. (1994) Bestuiving bij steenfruit. Belgische Fruitveiling (BFV), Sint-Truiden, 29 november 1994.

Keulemans, J., (1995) Functie van zaden in vruchten bij appel. Fruitconsult, Zetten (Nederland), 24 november 1995.

Keulemans, J., (1996) Ontwikkeling van homozygote kruisingsouders. Moleculaire veredeling van appel en peer. Zelf-steriliteit en bevruchting bij appel. Ontwikkeling van nieuwe appelrassen. Bestuivingsproeven. (5 mededelingen). Voorlichtingsdag Fruitteelt, Heverlee, 6 januari 1996.

Keulemans, J. (1997) Bestuiving, bevruchting en vruchtzetting bij fruit: een pittig verhaal over theorie en praktijk. Voorlichtingsdag Fruitteelt, Heverlee, 11 januari 1997.

Keulemans, J. (1997) Fysiologische, moleculaire en genetische aspecten van bestuiving (van appel) en de praktische implicaties. Proefstation voor de Fruitteelt, Wilhelminadorp (NL), 13 maart 1997.

Keulemans, J. (1998) Appelveredeling. Guvelingen-Ring, St.-Truiden, 9 januari 1998.

Broothaerts, W. (1998) Fruit tree biotechnology at the Fruitteeltcentrum K.U.Leuven, Belgium. Pacific Agri-Food Research Centre, Summerland, B.C. Canada, May 1998.

Keulemans, J. (1998) Perspectieven van genetische transformatie. Tiel (Geldermalsen-NL), 10 december 1998.

Keulemans, J. (1999) Veredeling: de zoektocht naar nieuwe rassen. Fruitteelt-studiedag, Heverlee, 16 januari 1999.

Keulemans, J. (1999) Veredeling van fruitgewassen. Wervel, Leuven, 16 februari 1999

Keulemans, J. (1999) Fruitveredeling en genetisch gemodificeerde fruitgewassen. Antwerpen, 16-16 oktober 1999.

V. Interne rapporten

Broothaerts, W. (1996) Zelf-incompatibiliteit bij Rosaceae. Verslag van 5 jaar onderzoek 1991-1996.

- verslagen onderzoeksprojecten

VI. Thesissen

Broothaerts, W. (1991) Self-incompatibility or how plants recognize 'self'. The role of pistil ribonucleases associated with expression of self-incompatibility in Petunia hybrida. PhD thesis, K.U. Leuven, Belgium.

Keulemans, J. (1991) Bloemfysiologische parameters als produktiebepalende factoren bij pruim (Prunus domestica L.). Doctoraatsproefschrift nr. 203 Dissertationes de Agricultura.

Janssens, G.A. (1997). Molecular analysis of the self-incompatibility (S-) gene in apple (Malus x domestica Borkh.). S-genotyping of apple cultivars and (anti)sense suppression of the S-gene. PhD thesis K.U.Leuven.

VII. Boeken

Keulemans, J. (1987) Bloei, bestuiving en bevruchting bij steenfruit. Instituut voor Aanmoediging van Wetenschappelijk Onderzoek in Nijverheid en Landbouw (IWONL)-Brussel, 157 p.

Wustenberghs, H., Keulemans, J. (2000) Groeiprincipen en groeimanipulatie bij steenfruit. Ministerie van Middenstand en Landbouw, Onderzoek en Ontwikkeling – Fruitteeltcentrum K.U.Leuven, 198 p.

Tromp, J., Wertheim, S.J., Keulemans, J. (1997) Proceedings of the Second International Workshop on Pollination. Acta Horticulturae 423.

VIII. Artikels in of gedeelten van boeken

Belmans, K., Keulemans, J. (1989) Invloed van bodemkenmerken op de heterogeniteit in produktie bij Noordkrieken. Landbouwtijdschrift 42 (nummer buiten reeks: Pit- en steenfruit): 75-80.

Belmans, K., Keulemans, J., de Barsy, T., Bronchart, R. (1989) Verschillen in barstgevoeligheid tussen cultivars van zoete kers. Landbouwtijdschrift 42 (nummer buiten reeks: Pit en steenfruit): 153-160.

Keulemans, J., Van Laer, H. (1989) The effective pollination period of plums with special emphasis on the influence of temperature on pollen germination and pollen tube growth. In: Manipulation of fruiting (ed. Wright, Ch.), Butterworths-London, 159-171

De Witte, K., Keulemans, J. (1994) Restrictions of the efficiëncy of haploid plant production in apple, cultivar Idared, through parthenogenesis in situ. In: H. Schmidt, M. Kellerhals (eds). Progress in Temperate Fruit Breeding. Kluwer Academic Publishers, Dordrecht, pp 403-408.

Keulemans, J., De Witte, K. (1994) Plant regeneration from cotyledons and embryonic axes in apple: sites of reaction and effect of pre-culture in the light. In: H. Schmidt, M. Kellerhals (eds). Progress in Temperate Fruit Breeding. Kluwer Academic Publishers, Dordrecht, pp 371-375.

Keulemans, J., Eyssen, R., Colda, G. (1994) Improvement of seed set and seed germination in apple. In: H. Schmidt, M. Kellerhals (eds). Progress in Temperate Fruit Breeding. Kluwer Academic Publishers, Dordrecht, pp 225-228.

Feijo, J.A., Certal, C.A., Boavida, L., Van Nerum, I., Valdiviesso, T., Oliveira, M.M., Broothaerts, W. (1999) Advances on the study of sexual reproduction in the cork-tree (Quercus suber L.), chestnut (Castanea sativa Mill.) and in Rosaceae (apple and almond). In: G. Cai, M. Cresti, A. Moscatelli (eds) Fertilization in higher plants, pp. 377-396. Springer Berlin Heidelberg.

Editie: januari 2001

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