Pleiotropic association of infection frequency and latent period of two barley cultivars partially resistant to barley leaf rust |
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Authors: | J. E. Parlevliet |
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Affiliation: | (1) Department of Plant Breeding (IvP), Agricultural University, Wageningen, the Netherlands |
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Abstract: | Summary Cebada Capa , carrying four to six minor genes for a longer latent period (LP), was crossed to L94 and Vada , carrying no and five to six minor genes for a longer LP respectively. Of each of 68 F3-lines the infection frequency (IF) and the LP of ten just-heading plants were assessed. There appeared to be a strong association between IF and LP, whereby the relationship between IF and LP of both crosses could be described by a single linear regression equation. The data strongly suggest that the genes for increased LP pleiotropically decrease the IF. The possibility of a close linkage between genes for reduced IF and genes for increased LP, although unlikely, could not be excluded. |
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Keywords: | Hordeum vulgare barley Puccinia hordei barley leaf rust infection frequency latent period linkage minor genes partial resistance pleiotropy |
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