Abstract
Leek (Allium porrum L.) is an important outdoor vegetable in West Europe, where it is cultivated on about 30,000 ha. Most commercial cultivars of leek are open pollinated. One of the major problems with the crop is poor uniformity. Leek is an outbreeding species with up to 20% self-fertilisation. Much of the variation of open pollinated cultivars is explained by the strong sensitivity to in breeding depression after selfing. In this study we attempt to analyse in a systematic way the relationship between degree of selfing and agricultural performance in leek. The results obtained confirm a negative correlation between selfing and somea gricultural aspects important for vigour such as seedling emergence, plant growth and plant fresh yield. Also negative correlations between degree of selfing and seed individual weight and between selfing and seed individual size were found. The negative relationship between inbreeding and plant weight at harvest is further confirmed in an experiment in which the origin (cross-pollination orself-pollination) of each individual offspring plant analysed was determined using AFLP-markers. Finally, the correlation between chlorophyll deficiency genes and the loss of vigour that follows selfing was investigated. The results obtained demonstrate a significant decrease of pigment content in two generations of selfing.
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Adams, E., I. Roldán-Ruiz, A. Depicker, E. Van Bockstaele & M. De Loose, 2000. A maternal factor conferring resistance to crown rust in Lolium multiflorum cv. ‘Axis’. Plant Breed 119: 182-184.
Berninger, E. & P. Buret, 1967. Etude des déficients chlorophylliens chez deux espèces cultivées du genre Allium: l'oignon A. cepa L. et le poireau A. porrum. Annales de l'Amélioration des Plantes 17: 175-194.
Brewster, J.L., 1994. Onions and Other Vegetable Alliums. CAB International, Wallingford.
Currah, L., 1986. Leek breeding: a review. J Hort Sci 61: 407-415.
De Clercq, H., J. Baert & E. Van Bockstaele, 1999. Breeding potential of Belgian landraces of leek (Allium ampeloprasum L. var. porrum). Euphytica 106: 101-109.
Eurostat, 1999. Crop production, yearly statistics. Theme 5 n°2. Publication Office of the European Community, Luxembourg.
Gagnebin, F. & J.C. Bonnet, 1979. Quelques considérations sur la culture et l'amélioration du poireau. Revue Horticole Suisse 52: 112-116.
Gray, D. & J.R.A. Steckel, 1986. Self-and open-pollination as factor influencing seed quality in leek. Ann Appl Biol 108: 167-170.
Husband, B.C. & D.W. Schemske, 1997. The effect of inbreeding in diploid and tetraploid populations of Epilobium angustifolium (Onagraceae): implications for the genetic basis of inbreeding depression. Evolution 51: 737-746.
Lamote, V., 2003. Genetic Diversity of Phragmites australis, Iris pseudacorus and Typha latifolia in Flanders. PhD dissertation University of Gent, 196 pp.
Lichtenthaler, H.K., 1987. Chlorophylls and carotenoids: Pigments of photosynthetic membranes. Meth Enzym 148: 350-382.
Norusis, M.J., 2000. SPSS for Windows, release 10.1.0, http:www/spss.com/SPSSInc. [release 10.0]. 2000. Chicago, IL.
Roldán-Ruiz, I., J. Dendauw, E. Van Bockstaele, A. Depicker & M. De Loose, 2000. AFLP markers reveal high polymorphic rates in ryegrasses. Mol Breed 6: 125-134.
Schweisguth, B., 1970. Etudes préliminaires à l'amélioration du poireau A. porrum L. Proposition d'une méthode d'amélioration. Annales de l'Amélioration des Plantes 20: 215-231.
Smith, B.M. & T.C. Crowther, 1995. Inbreeding depression and single cross hybrids in leeks (Allium ampeloprasum ssp. porrum). Euphytica 86: 87-94.
Vos, P., R. Hogers, M. Bleeker, M. Reijans, T. Van De Lee, M. Hornes, A. Frijters, J. Pot, J. Peleman, M. Kuiper & M. Zabeau, 1995. AFLP: a new technique for DNA fingerprinting. Nucl Acids Res 23: 4407-4414.
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De Clercq, H., Peusens, D., Roldán-Ruiz, I. et al. Causal relationships between inbreeding, seed characteristics and plant performance in leek (Allium porrum L.). Euphytica 134, 103–115 (2003). https://doi.org/10.1023/A:1026198910662
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DOI: https://doi.org/10.1023/A:1026198910662