Genetic analysis of resistance to Puccinia striiformis f.sp. tritici in cv. Aflak at adult plant stage |
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| Authors: | M Zandipour M Khodarahmi E Majidi SH Ebrahim-nejad |
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| Institution: | 1. Department of Plant Breeding, Science and Research Branch, Islamic Azad University, Tehran, Iranzandipour.m@gmail.com;3. Seed and Plant Improvement Institute, Karaj, Iran;4. Department of Plant Breeding, Science and Research Branch, Islamic Azad University, Tehran, Iran;5. Agricultural Research Center, Sari, Iran |
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| Abstract: | In order to investigate heritability and gene action for yellow rust resistance in wheat, a resistance yellow rust cultivar Aflak was crossed to susceptible cultivar Avocet‘s’. Parents, F1, F2 and F3 generations were cultured according to randomised complete block design with two replications in the research station of Gharakhil, Iran. Parents and other generations were inoculated with 70E0A+ race. Traits including severity and infection type were recorded and then coefficient of infection was calculated. For this trait, generations mean and variance analysis were performed and results showed that there were significant differences among generations for coefficient of infection. Results showed that in addition to additive and dominance effects, at least one kind of epistasis interaction (additive × additive) control this trait. Although additive and dominance effects control this trait, but with attention to generations variance analysis, the results showed that additive variance had important role to control this trait. |
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| Keywords: | wheat yellow rust coefficient of infection generations mean analysis |
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