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作物学报 ›› 2011, Vol. 37 ›› Issue (02): 255-262.doi: 10.3724/SP.J.1006.2011.00263

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

川麦42中源于人工合成小麦的一个高产位点鉴定

李俊1,魏会廷2,胡晓蓉1,李朝苏1,汤永禄1,刘登才3,4,杨武云1,*   

  1. 1四川省农业科学院作物研究所, 四川成都 610066; 2 四川省农业科学院植物保护研究所, 四川成都 610066; 3 四川农业大学小麦研究所, 四川温江 611130; 4 中国科学院西北高原生物研究所高原生物适应与进化重点实验室, 青海西宁 810001
  • 收稿日期:2010-06-02 修回日期:2010-08-04 出版日期:2011-02-12 网络出版日期:2010-11-12
  • 通讯作者: 杨武云, E-mail: yangwuyun@yahoo.com.cn, Tel: 028-84504657
  • 基金资助:

    本研究由国家自然科学基金项目(30771338, 30871532), 国家科技支撑计划项目(2006BAD13B02-03, 2006BAD01A02), 国家高技术研究发展计划(863计划)项目(2006AA10Z1C6), 国家小麦产业技术体系项目, 四川省育种攻关项目, 四川省应用基础项目和四川省财政育种优秀论文基金资助。

Identification of a High-Yield Introgression Locus from Synthetic Hexaploid Wheat in Chuanmai 42

LI Jun1,WEI Hui-Ting2,HU Xiao-Rong1,LI Chao-Su1,TANG Yong-Lu1,LIU Deng-Cai3,4,YANG Wu-Yun1,*   

  1. 1 Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; 2 Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; 3 Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, China; 4 Northeast Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810001, China
  • Received:2010-06-02 Revised:2010-08-04 Published:2011-02-12 Published online:2010-11-12
  • Contact: YANG Wu-Yun, E-mail: yangwuyun@yahoo.com.cn, Tel: 028-84504657

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摘要： 人工合成小麦是改良现代小麦的重要基因资源。川麦42是人工合成小麦与普通小麦杂交育成的高产、抗条锈、广适小麦新品种。利用小麦全基因组的1029个SSR标记扫描，检测了川麦42遗传背景中人工合成小麦导入位点，并利用川麦42与四川小麦品种川农16构建的127个重组自交系(RIL, F8)，在4年6个环境下种植获得的农艺性状数据，分析了人工合成小麦导入位点对小麦产量和产量构成因子的遗传效应，在川麦42遗传背景中发现一个高产的人工合成小麦导入位点Barc1183。根据Barc1183分子标记，将RIL群体中的127个株系分为川麦42基因型(具人工合成小麦导入位点)和川农16基因型(具川农16位点)两组，前者的人工合成小麦导入位点能促进分蘖能力，提高有效穗数、每平方米粒数，增加收获指数、籽粒生产率，在4年6个环境下较后者平均增产达8.92%，Barc1183为一高产的人工合成小麦导入位点。利用中国春双端体和硬粒小麦Longdon的D染色体代换系验证，将其定位于小麦4D染色体长臂。川麦42遗传背景中的高产人工合成小麦导入位点Barc1183，对于进一步开展小麦高产育种研究具有重要价值。

关键词: 川麦42, 人工合成小麦, 导入位点, 高产

Abstract: Synthetic hexaploid wheat, a carrier of many elite genes, is an important genetic resource in the improvement of common wheat (Triticum aestivum L.). Chuanmai 42 is a wheat cultivar with high-yield potential and resistance to strip rust(Puccinia striiformis f. sp. tritici), which was developed by crossing and backcrossing Syn769 (an elite synthetic hexaploid wheat) with Sichuan commercial wheat cultivars. For understanding the genetic effects of the introgression loci of synthetic hexaploid wheat in Chuanmai 42, a total of 78 introgression loci of synthetic hexaploid wheat were identified in Chuanmai 42 by scanning using 1029 SSR markers. Using 127 recombinant inbred lines (RILs, F8) with Chuanmai 42 (introgression loci) and Chuannong 16 (Chuannong 16 loci) backgrounds, the genetic effects of the introgression loci were evaluated across six environments in Sichuan Province, China from 2006 to 2009. One high-yield potential locus Barc1183 derived from the synthetic hexaploid wheat was detected in Chuanmai 42. It was further located on the long arm of 4D chromosome using the 4DS and 4DL telosomic lines of Chinese Spring and the 4D(4A) and 4D(4B) substitution lines of Longdon. This locus had positive effects on increasing tiller number per plant, number of effective spikes, grain number per square meter, harvest index, and grain production rate, and the average yield was increased by 8.92% compared with Chuannong 16 in the six growing environments. Therefore, the introgression locus Barc1183 of synthetic hexaploid wheat can be useful for breeding high-yield potential wheat.

Key words: Chuanmai 42, Synthetic hexaploid wheat, Introgression loci, High yield

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