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- W3150366273 abstract "We used close linkage molecular markers of resistance genes Lr46/Yr29/Pm39,Sr2/Yr30and Lr68to analysis the genetic characteristics of the resistance genes in the BC1F1and F2descendant populations.The BC1F1and F2descendant populations both came from ‘RL6077'and‘Xinong 979'.Combined with the main agronomic traits,we could deeply comprehend the gene heredity rule of wheat disease resistance genes as well as the correlation with agronomic traits.We also evaluated the background response rates of 92plants in the BC1F1population who have three kinds of resistance genes at the same time.Theresult showed that:(1)In the F2population the transfer rate of gene Lr68(65.41%)is lower than theory, but the transfer rate of Lr46/Yr29/Pm39(75.83%)and Sr2/Yr30(74.53%)is consistent with the theoretical,respectively.In the BC1F1population,the transfer rate of gene Lr68(44.27%)transferred lower than theory,while the transfer rate of Lr46/Yr29/Pm39(56.64%)and Sr2/Yr30(55.11%)gene delivered higher than theory,respectively.(2)All these three kinds of resistance genes have extremely significant positive correlation with the plant height,spike length,spike-stalk and spike-internode.The Lr68gene and Sr2/Yr30gene have significant or extremely significant positive correlation with the spike grain number.The Lr46/Yr29/Pm39gene has significantly negative correlation with the thousand kernel weight and significantly positive correlation with the ear number per plant.(3)In the evaluate of the background response rates of plants in the BC1F1population which have Lr46/Yr29/Pm39,Sr2/Yr30and Lr68genes. Meanwhile,we can find that the biggest response rate of recurrent parent‘Xinong 979'was up to 91. 67%.There were three plants whose response rates exceed 90%and they take 0.46%of the BC1F1population.This study provided an important theoretical reference to using the excellent genetic resources of ‘RL6077'.It also has important significance to create a variety of new disease-resistant wheat germplasm." @default.
- W3150366273 created "2021-04-13" @default.
- W3150366273 creator A5026543743 @default.
- W3150366273 date "2014-01-01" @default.
- W3150366273 modified "2023-09-25" @default.
- W3150366273 title "Genetic Characteristics of Wheat Resistance Gene Lr46/Yr29/Pm39,Sr2/Yr30and Lr68 and Association Analysis of Main Agronomic Traits" @default.
- W3150366273 hasPublicationYear "2014" @default.
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