Rate and inheritance of cross-fertilization in faba bean (Vicia faba L.) |
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Authors: | P L J Metz A A M Buiel A van Norel J P F G Helsper |
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Institution: | (1) DLO-Centre for Plant Breeding and Reproduction Research (CPRO-DLO), P.O. Box 16, 6700 AA Wageningen, The Netherlands;(2) Present address: Legumes Virology, ICRISAT, Patancheru P.O., 502324, Andhra Pradesh, India |
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Abstract: | Summary To assess the feasibility for synthetic varieties of Vicia faba L., 108 faba bean genotypes were screened for cross-fertilization rate in five field experiments carried out in 1989 and 1990 at Wageningen.Significant genotypic differences were observed for outcrossing rate, which ranged from 1 to 55%. These percentages, however, are thought to be not high enough for a commercially feasible production of synthetic varieties.The inheritance of cross-fertilization rate, determined by testing the F4 generation of a cross between two inbreds, both with high outcrossing rates, appeared to be of a polygenic nature, as was indicated by the wide variation in, and the continous distribution of, the cross-fertilization rates. Among the F4 lines tested some had a significantly higher cross-fertilization rate than the parents. However, this difference was not found when these lines were retested, indicating that possibilities for successful selection for higher outcrossing rates might be limited. |
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Keywords: | faba bean inheritance outcrossing rate synthetic variety Vicia faba |
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