小冰麦33温敏抗叶锈性基因分析  

Postulation of Temperature-sensitive Genes for Resistance to Wheat Leaf Rust in Wheat-wheatgrass No.33 at Seedling Stage

作　　者：张英春[1] 张占全[1] 闫红飞[1] 李在峰[1] 刘大群[1] 杨文香[1] 

机构地区：[1]河北农业大学植物保护学院植物病理系/河北省农作物病虫害生物防治工程技术研究中心,河北保定071001

出　　处：《麦类作物学报》2008年第1期150-153,共4页Journal of Triticeae Crops

基　　金：国家重点基础研究发展项目("973"计划项目)(2005CCA01600);国家"十一五"攻关计划项目(2006BAD08A05)

摘　　要：小冰麦33是一个高产、高蛋白、抗多种病害的小麦品种,并具有温敏抗叶锈性。为了明确小冰麦33所含有的温敏性抗叶锈基因,选用4个不同毒性基因组合的小麦叶锈菌生理小种在5℃/10℃(黑暗/光照)、15℃/20℃(黑暗/光照)和25℃/30℃(黑暗/光照)三个温度条件下对小冰麦33进行了温敏抗叶锈性基因推导。通过比较3个不同温度下小冰麦33与7个以Thatcher为遗传背景的小麦抗叶锈近等基因系(分别含有Lr11、Lr13、Lr14a、Lr18、Lr23、Lr34、Lr37温敏基因)对4个小麦叶锈菌生理小种的反应型模式,推导出该品种可能含有Lr18及其他新的温敏抗叶锈性基因。Wheat-wheatgrass No. 33 is a very potential breeding line in agricultural production due to high quality protein, high yield and the character of multi-resistance to wheat diseases. The objective of this study was to detect temperature-sensitive resistance genes to wheat leaf rust in Wheat-wheatgrass No. 33. Four physiological races of Puccinia triticina were used to deduce temperature-sensitive resistance genes in wheat cultivar Wheat-wheatgrass No. 33 by comparison with the infection types of the seven near isogenic lines containing known temperature-sensitive Lr genes at 5℃ （night） /10℃ （day） ,15℃ （night）/20℃ （day）, and 25℃ （night）/30℃ （day）temperatures, respectively. The results showed that Lr18 and new temperature-sensitive resistance genes might be present in Wheat-wheatgrass No. 33.

关 键 词：小冰麦33 温敏抗叶锈性基因 遗传分析 

分 类 号：S512.9[农业科学—作物学] S435.121.43