小麦新种质N95175抗白粉病基因的染色体定位

doi:10.7668/hbnxb.2010.01.043

华北农学报 ›› 2010, Vol. 25 ›› Issue (1): 213-216. doi: 10.7668/hbnxb.2010.01.043

所属专题： 小麦；植物保护；生物技术；

小麦新种质N95175抗白粉病基因的染色体定位

王长有¹, 王秋英¹, 刘志立², 张宏¹, 王亚娟¹, 刘新伦¹, 吉万全¹

1. 西北农林科技大学,农学院, 陕西杨凌 712100;
2. 城固县种子管理站, 陕西城固 723200

收稿日期:2009-12-21 出版日期:2010-02-28
通讯作者: 吉万全(1963-), 男,陕西合阳人,教授,博士,博士生导师,主要从事小麦遗传育种和小麦分子生物学研究.
作者简介:王长有(1973-),男,陕西泾阳人,助理研究员,博士,主要从事小麦种质创新及其分子生物学研究.
基金资助:
陕西省"13115"科技创新工程项目(2008ZDKG-07);西北农林科技大学人才基金;西北农林科技大学唐仲英育种基金

Chromosome Location of Resistance Gene to Powdery Mildew in New Wheat Germplasm N95175

WANG Chang-you1¹, WANG Qiu-ying1¹, LIU Zhi-li2², ZHANG Hong1¹, WANG Ya-juan1¹, LIU Xin-lun1¹, JI Wan-quan1¹

1. College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100, China;
2. Seed Management Station of Chenggu County, Chenggu 723200, China

Received:2009-12-21 Published:2010-02-28

摘要/Abstract

摘要： 白粉病是影响小麦生产的病害之一.小麦种质N95175对小麦白粉病免疫,为了定位它所携带的抗白粉病基因的染色体位置,对其苗期白粉病抗性进行了遗传分析.个感白粉病普通小麦品种与N95175杂交,F₁对白粉病均表现高抗,F₂抗感分离比例均符合期望比例3:1;21个感白粉病普通小麦缺(单)体系与N95175杂交,F₁对白粉病均表现高抗,F_2白粉病抗感比例除阿勃6AN×N95175组合偏离期望比例3:1外,其余组合均符合期望比例3:1.结果表明,N95175苗期白粉病抗性由位于小麦6A染色体上的1对完全显性基因控制.

关键词: 普通小麦, 抗白粉病基因, 染色体定位

Abstract: Powdery mildew,caused by Blumeria graminis f.sp.tritici,is one of the devastating diseases in most wheat-growing areas worldwide.New wheat germplasm N95175 is immune to powdery mildew.Genetic analysis of powdery mildew resistance of N95175 at seedling stage was done in order to locate the resistant gene on wheat chromosome.F₁ progeny between N95175 and four highly susceptible common wheat cultivars were highly resistant to powdery mildew,the ratio of the resistant and susceptible plants in F₂ progeny fitted the expected 3 to 1.All of F₁ generation between a set of highly susceptible common wheat nullisomic lines or monosomic lines and N95175 were highly resistant to powdery mildew,the ratio of the resistant and susceptible plants in(Abbondanza 6AN/N95175) F₂ progeny deviated from the expected 3 to 1,and F₂ progeny of the other 20 crosses fitted the expected 3 to 1.The results indicated that powdery mildew resistance of N95175 at seedling stage was controlled by a single dominant gene located on chromosome 6A.

Key words: Common wheat, Gene resistant to powdery mildew, Chromosome location

中图分类号:

S435.12

王长有, 王秋英, 刘志立, 张宏, 王亚娟, 刘新伦, 吉万全. 小麦新种质N95175抗白粉病基因的染色体定位[J]. 华北农学报, 2010, 25(1): 213-216. doi: 10.7668/hbnxb.2010.01.043.

WANG Chang-you1,WANG Qiu-ying1,LIU Zhi-li2,ZHANG Hong1,WANG Ya-juan1,LIU Xin-lun1,JI Wan-quan1. Chromosome Location of Resistance Gene to Powdery Mildew in New Wheat Germplasm N95175[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(1): 213-216. doi: 10.7668/hbnxb.2010.01.043.

http://www.hbnxb.net/CN/Y2010/V25/I1/213

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小麦新种质N95175抗白粉病基因的染色体定位

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