Levels of self-incompatibility in wallflower,Cheiranthus cheiri L. |
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Authors: | L. E. Watts |
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Affiliation: | (1) Plant Breeding Department, Sutton Seeds Ltd., London Road, Reading, England |
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Abstract: | Summary Approximately 1000 plants from 30 wallflower cultivars were selfpollinated in the open flower and bud stage. Only a very small number of plants failed to set seed and the averages ranged from 3.3 to 11.0 seeds per siliqua. Cultivars with mixed colours appeared to show most self-incompatibility and it is suggested that they form un-evolved populations in terms of the incompatibility system by comparison with their related single-colour cultivars.S1 progenies tended to remain at the same self-incompatibility level as their parents although some segregation occurred with approximately the same number of plants from low to high self-incompatibility and vice-versa.S1 progenies showed no apparent inbreeding depression, as is the case also for their descendants, but there was a tendency for progeny heterogeneity to be associated with high parental self-incompatibility while homogeneous inbreds were most often derived from more self-compatible parents. |
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Keywords: | Cheiranthus cheiri wallflower self-incompatibility variation |
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