四川农业大学学报 ›› 1999, Vol. 17 ›› Issue (03): 261-267.doi: 10.16036/j.issn.1000-2650.1999.03.005

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用新隐性ph基因向小麦转移Aegilops variabilis Eig遗传物质

刘登才, 魏育明, 郑有良   

  1. 四川农业大学 小麦研究所, 四川 都江堰 611830
  • 收稿日期:1999-08-19 出版日期:1999-09-30 发布日期:2017-04-22
  • 基金资助:
    四川省科委应用基础项目

Genetic Transfer from Aegilops Variabilis Eig to Wheat Via A New Recessive ph Gene

LIU Dengcai, WEI Yuming, ZHENG Youliang   

  1. Triticeae Research Institute, Sichuan Agricultural University, Dujiangyan 611830, China
  • Received:1999-08-19 Online:1999-09-30 Published:2017-04-22

摘要: 小麦地方品种"开县罗汉麦"(简称KL)具有新隐性ph基因,且远缘杂交亲和性和胚培出苗率高。本研究用它与Ae. variabilis杂交获杂种F1,并自交获得F2、F3,并用推广品种回交获得F1BC1、F2BC1。在F2群体中,有2株植株的分蘖分别高达88个、67个,极显著高于一般小麦品种。多分蘖可节省用种量,可能在小麦育种、特别是杂交小麦育种中有用途。同时,Ae. variabilis的白粉、条锈病抗性能在F1、F2的遗传背景中完全表达,这表明利用Ae. variabilis的抗病性是可行的;此外,发现一些彼此不相连锁的来自Ae. variabilis的易于识别的形态标记性状,这有助于将Ae. variabilis基因向小麦转移

关键词: 小麦, Ae. variabilis, ph基因, 基因转移, 多分蘖

Abstract: Bread wheat cv. Kaixianluohanmai (abbr.KL) has been used as a ‘bridge’ of genetic transfer due to its new recessive ph gene, high crossability and capability of rescue culture. After selfing and backcrossing, the populations of F2, F3, F1BC 1 and F2BC 1 are got from the combinants of ‘KL×Ae. variabilis’ and ‘(KL×CS ph1b)×Ae. variabilis’. In F2, 2 plants show multipe tillers as many as 88 and 67, respectively. Multipe tillers may be useful for wheat breeding, especially for hybrid wheat breeding. Meanwhile, resistance to powdery mildew and stripe rust derived from Ae. variabilis is totally expressed in F1 and F2 adult plants, indicating the usefulness for wheat improvement. Moreover, Ae. variabilis have some phenotypic markers, and most of them do not link each other, which are helpful for genetic transfer from Ae. variabilis to wheat.

Key words: BREAD WHEAT, AEGILOPS VARIABILIS, GENETIC TRANSFER, ph GENE, MULTIPE TILLERS

中图分类号: 

  • S512.03