免疫白粉病的小麦种内易位系的创制  

Generation of Wheat Intra - species Translocation Line Showing High Resistance to Powdery Mildew and Its Chromosome Pattern in C-banding and in situ Hybridization

作　　者：文玉香[1,2,3] 吴海珊 周文娟[1,2,3] 王二明 于竞[1,2,3] 魏荣 薛民生 孙家柱 朱维云[1,2,3] 盛宝钦[1,2,3] 向齐君 段霞瑜 

机构地区：[1]中国科学院遗传研究所植物细胞与染色体工程国家重点实验室 [2]北京市农林科学院作物所 [3]中国农业科学院植物保护所

出　　处：《Acta Genetica Sinica》1997年第6期513-518,共6页

基　　金：国家科委863计划资助

摘　　要：以普通小麦Ａ５５２为父本、ＩＲＳ／ＩＢＬ黑麦和小麦易位系早抗为母本的杂种Ｓ３０６３，经Ｃ－分带和原位杂交鉴定，发现丢失了母本的黑麦成分，同时又发生了小麦种内易位，变成了５ＢＳ／７ＢＳ、５ＢＬ／７ＢＬ臂间双易位系。与此同时，白粉病抗性和一些农艺性状也发生了变化，此已己连续３年对白粉病免疫，且免疫条锈、叶锈和高抗黄矮病，每公顷５５２３千克。By using C - banding and in situ hybridization, a hybrid wheat S3063, obtained from the cross of common wheat A552(male) with an 1RS / 1 BL translocation line Zaokang(femal), was found that the rye chromosome fragment had been lost and the translocations of wheat chromosome had taken place. As a consequence, an intra - species translocation, a double arm - translocation of 5BS / 7BS and 5BL / 7SL was formed. Possibly due to such Kinds of translocation, the resistance to powdery mildew was increased and some agronomical characters were changed. Line S3063 was shown to be immune from powdery mildew and stem- and leaf- nut u well as highly resistant to yellow dwarf virus in the past 3 years. The yield was also increased to 5523 kg / h, very close to that of local variety Jingdong 6(5751 kg / h) in Beijing area.

关 键 词：小麦 种内易位 C-分带 白粉病抗性 

分 类 号：S512.103.4[农业科学—作物学] S435.121.4