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| 普通小麦-柔软滨麦草易位系M8657-4抗条锈病基因的遗传分析 | |
| 引用本文： | 杨敏娜,彭岳林,蒙祖庆,井金学.普通小麦-柔软滨麦草易位系M8657-4抗条锈病基因的遗传分析[J].安徽农业科学,2010,38(23):12523-12524,12529. |
| 作者姓名： | 杨敏娜 彭岳林 蒙祖庆 井金学 |
| 作者单位： | 1. 西藏农牧学院植物科学技术学院,西藏林芝,860000;西北农林科技大学植物保护学院/陕西省农业分子生物学重点实验室,陕西杨凌,712100 2. 西藏农牧学院植物科学技术学院,西藏林芝,860000 3. 西北农林科技大学植物保护学院/陕西省农业分子生物学重点实验室,陕西杨凌,712100 |
| 基金项目： | 教育部高等学校学科创新引智计划项目，国家自然科学基金，国家"十一五"攻关计划项目，陕西省科技攻关项目 |
| 摘 要： | 目的]对普通小麦-柔软滨麦草易位系M8657-4的抗条锈病基因进行遗传分析,明确其抗条锈病基因及遗传特点。方法]用中国小麦条锈菌CYR29、CYR30、CYR31、CYR32、Su11-4及Su11-11共6个生理小种对易位系M8657-4的苗期抗条锈性进行评价;采用常规杂交法对M8657-4的抗条锈病基因进行遗传分析。结果]易位系M8657-4对中国小麦条锈菌具有良好的抗性;M8657-4对菌系CYR29和Su11-4的抗锈性由2对核基因（互补作用）控制,对CYR31的抗锈性由1对隐性核基因控制,对Su11-11的抗病性,M8657-4做母本时由2对基因（互补作用）控制,M8657-4做父本时由1对隐性基因控制。结论]易位系M8657-4的抗条锈性由主效基因控制,可将其作为优良种质加以开发利用。 |
| 关 键 词： | 小麦-柔软滨麦草易位系 小麦条锈病 抗病基因 遗传分析 |
Genetic Analysis of Stripe Rust Resistance of Wheat Translocation Line M8657-4 Derived from Elymus mollis Trin. Hara |
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| Institution: | YANG Min-na et al (Plant Science and Technology Institute of Tibet Agricultural and Animal Husbandry College,Linzhi,Tibet 860000) |
| Abstract: | Objective] Stripe rust is one of the most important diseases of wheat worldwide. To clear resistance genes and genetic characteristics to stripe rust in translocation line M8657-4. Method]The yellow rust races (Puccinia striiform f.sp.stritici) CYR29,CYR30,CYR31,CYR32,Su11-4 and Su11-11were selected as inoculum to identify resistance of M8657-4 to stripe rust at seedling stage. Genetic analysis of resistance to stripe rust was based on the F2 populations from the hybridization between M8657-4 and a susceptible wheat line Mingxian 169. Result] The translocation line M8657-4 has highly resistant to wheat stripe rust. The results also indicated that two dominant karyoplasms genes conferred resistance to race CYR29 and Su11-4,respectively; one recessive gene conferred resistance to stripe rust race CYR31; Two dominant karyoplasms genes conferred resistance when M8657-4 was female parent and one recessive gene conferred resistance when M8657-4 was male parent to stripe rust race Su11-11. Conclusion] It suggested that the translocation line could be used to accelerate the utilization of excellent genetic resources because it contained rich major resistance genes to wheat stripe rust. |
| Keywords: | Wheat-translocation line (Elymus mollis Trin Hara) Wheat stripe rust Resistance gene Genetic analysis |
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