文献类型: 外文期刊
第一作者: Lin Ruiming
作者: Lin Ruiming;Xu Shichang;Xu Xiaodan;Lin Feng;Hussain, Khalid
作者机构:
关键词: Gene postulation;Puccinia striiformis;Resistance gene;Wheat;Cluster analysis
期刊名称:INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY ( 影响因子:0.822; 五年影响因子:0.906 )
ISSN: 1560-8530
年卷期: 2011 年 13 卷 5 期
页码:
收录情况: SCI
摘要: Based on the gene-for-gene concept, genes can be postulated from the correlation of the responses of selected resistance sources with those of controls. Using 35 testers and 26 Puccinia striiformis f. sp. tritici, stripe rust resistance genes were postulated for 44 wheat cultivars commonly grown in Hebei, Henan and Shandong Provinces in China. 22 seedling Yr resistance genes (Yr1, Yr2, Yr3, Yr4, Yr6, Yr7, Yr8, Yr9, Yr17, Yr20, Yr21, Yr22, Yr23, Yr24, Yr27, Yr32, YrHV , YrSD, YrV23, YrRes, YrC591 & Yrclein) were postulated in 18 of the 44 tested cultivars, either singly or in various combinations. The most commonly detected resistance gene was Yr21, which was present singly or in combination with other resistance genes in 13 cultivars (29.5%), followed by Yr1 (27.3%) and Yr6 (27.3%). No effective genes except Yr24 against Chinese predominant PST races CYR32 and CYR33 were detected in the 44 tested cultivars. These results provided a better understanding of specific resistances in the 44 tested cultivars. The introduction and utilization of wheat germplasm with effective resistance genes such as Yr5, Yr10, Yr15 and Yr24/Yr26 are important in wheat breeding in Northern China. (C) 2011 Friends Science Publishers
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