首页 | 本学科首页   官方微博 | 高级检索  
   检索      

普通小麦99-2439中的白粉病抗性遗传
引用本文:牛吉山,张丽娜,庄丽芳,王映红.普通小麦99-2439中的白粉病抗性遗传[J].植物学通报,2005,22(4):439-444.
作者姓名:牛吉山  张丽娜  庄丽芳  王映红
作者单位:河南农业大学国家小麦工程技术研究中心 郑州450002 (牛吉山),西北师范大学生命科学学院 兰州730070 (张丽娜),南京农业大学作物遗传与种质创新国家重点实验室 南京210095 (庄丽芳),河南农业大学国家小麦工程技术研究中心 郑州450002(王映红)
基金项目:河南省杰出青年科学基金,河南省科技厅科技攻关项目
摘    要:普通冬小麦品系99-2439在郑州连续4年对田间白粉菌(Blumeria graminis sp.tritici)表现高抗,但其抗性基因来源不清.通过染色体C-分带和IRS染色体特异性SCAR标记鉴定,表明它是一个小麦-黑麦(Triticum aestivum-Secale cereale)lBL/1RS异易位系.通过对中国春×99-2439杂交F2代分离群体抗性鉴定和1RS染色体臂检测结果分析,证明该抗病基因不在1RS染色体臂上.用单孢小麦白粉菌分离株对其抗性遗传进行研究,结果表明,99-2439的白粉病抗性由一对小种专化、隐性抗病基因控制.由于携带Pm5a的Hope/8Cc对中国的21个小麦白粉菌分离菌株均高度感病,而99-2439高抗混和白粉菌和5个单孢分离菌株,所以,99-2439所携带的抗白粉病基因不同于Pm5a.

关 键 词:小麦  白粉病  抗性  遗传
收稿时间:2004-06-23
修稿时间:2004-12-24

Inheritance of the Powdery Mildew Resistance in Wheat Line 99-2439
Abstract:Common winter wheat (Triticum aestivum) line 99-2439 has shown high resistance toBlumeria graminis sp. tritici in the field in Zhengzhou for 4 years. However, the origin of itspowdery mildew resistance genes was unclear. We identified 99-2439 as a Triticum aestivum -Secale cereale 1BL/1RS alien translocation line by chromosome C-banding and 1RS-specificSCAR marker detection. Powdery mildew evaluation and 1RS detection of an F2 segregationpopulation derived from the cross between Chinese Spring wheat and line 99-2439 demonstratedthat the powdery mildew resistance gene was located on the 1RS chromosome arm. Inheritancestudy using a single spore isolate of B. graminis showed that line 99-2439 harbored a race-specific recessive powdery mildew resistance gene. Because 99-2439 was highly resistant tomixed fungi and 5 single spore isolates of B. graminis, the powdery mildew resistance gene of 99-2439 was different from Pm5a of Hope/8Cc, which was highly susceptible to all 21 isolates of B.graminis in China.
Keywords:Wheat (Triticum aestivum)  Powdery mildew  Resistance  Inheritance
本文献已被 CNKI 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号