作物学报2011，Vol.37Issue(12)：2158-2166,9.DOI:10.3724/SP.J.1006.2011.00000
14个小麦品种(系)抗叶锈性分析
Analysis of Wheat Leaf Rust Resistance Genes in 14 Wheat Cultivars or Lines
摘要
Abstract
The objective of this study was to detect resistance genes to leaf rust in 14 wheat cultivars or lines. The resistance of the 14 wheat cultivars or lines was investigated at seedling and adult stages, and the resistance genes at seedling stage were postulated by inoculating 16 races of Puccinia triticina. Further validation was conducted by using 21 molecular markers cosegregated with or closely linked to the known Lr genes. According to the results of both phenotypic identification and molecular marker data, the information of the resistance genes in the 14 cultivars or lines was obtained. Genes Lr3a, Lr28 and Lr50 were postulated in S98351-2-2-2-1. Gene Lr37 was possibly carried by 9629-03A-4-1-1. Lr26 was present in 97167-1-2-1-1-2-1, 919-20-2c2, 9589, Mianzhong 438, 9916-8-6, and 9916-8-18. Lr28 was possibly present in 96104-l-5-lc2. Lrl was contained in 00-55-3-1-1. Lr24, Lr3 7, andLr38 were possibly in 1 Rl 3. Lr24 and Lr38 were possibly carried by 1 R1 7. Gene Lrl 0 and Lr34 were detected in 1R35, and Lr3a and Lr50 were also postulated in 1R35. Besides, 9524-1-2-2-1 might contain unknown or untested resistance genes against P. Triticina pathotypes. Genes Lr9, Lrl9, Lr20, Lr21, Lr29, Lr35, and Lr42 were not present in all cultivars or lines. The results indicate that these cultivars and lines carry diverse resistance genes to wheat leaf rust, and can be used as resistance resource for resistance breeding.关键词
小麦叶锈/抗病基因/基因推导/分子标记辅助选择Key words
Wheat leaf rust/Resistance gene/Gene postulation/Molecular marker-assisted selection引用本文复制引用
胡亚亚,张娜,李林懋,杨文香,刘大群..14个小麦品种(系)抗叶锈性分析[J].作物学报,2011,37(12):2158-2166,9.基金项目
本研究由国家公益性行业(农业)科研专项(200903035)资助. （农业）
