欢迎访问《中国农学通报》,

中国农学通报 ›› 2014, Vol. 30 ›› Issue (33): 26-30.doi: 10.11924/j.issn.1000-6850.2014-1283

所属专题: 玉米

• 农学 农业基础科学 • 上一篇    下一篇

运轮1号玉米群体轮回选择改良效果

陈朝辉,王安乐,解翠萍,董喜才,党德宣,韦晋晋,赵晋鹏   

  1. 山西省农业科学院棉花研究所,山西省农业科学院棉花研究所,,,山西省农业科学院农业资源综合考察研究所,,
  • 收稿日期:2014-05-04 修回日期:2014-11-17 接受日期:2014-09-16 出版日期:2015-01-08 发布日期:2015-01-08
  • 通讯作者: 王安乐
  • 基金资助:
    山西省科技攻关项目“大群体高产耐密抗逆玉米种质创新利用研究”(20110311002-7);山西省农业科学院育种工程项目“耐高温杂交玉米 新品种选育”“玉米基础群体种质轮回选择改良利用”(11yzgc093;11Yyzjc1106))

Improved Effects of Maize Population Yunlun No. 1 by Recurrent Selection Method

  • Received:2014-05-04 Revised:2014-11-17 Accepted:2014-09-16 Online:2015-01-08 Published:2015-01-08

摘要: 种质资源遗传基础狭窄是制约玉米育种的重要因素,而群体轮回选择是拓宽玉米资源遗传多样性的重要方法。以具有中国reid 血缘的8 个自交系组成的群体和美国坚秆种质群体BSSS 杂交后经过一轮混合授粉形成运轮1 号玉米群体。3 轮混合选择后,以昌7-2 为测验种分析了运轮1号群体的产量性状的配合力。结果表明,群体内单株间产量配合力差异显著,遗传变异较丰富。从138 个测交种中筛选出20 个较优良的对应自交单株作为新一轮轮回选择的亲本。预计新一轮合成群体产量配合力将提高11.6%,灌浆脱水速率较对照优越,其他农艺性状也得到相应改良。

关键词: 过氧化氢酶, 过氧化氢酶

Abstract: The narrow genetic background is the first constraint factor of maize (Zea mays L.). It is essential to broaden the genetic diversity of maize resources through recurrent selection. Yunlun No. 1 germplasm popula?tion derived from the mixed pollination after crossing the U.S. firm rod BSSS population with the population composed of eight inbred lines with Chinese Reid blood. After conducting three mixed selection,Chang 7-2 was used as test varieties to analyze the combining ability of the Yunlun No. 1 germplasm population’s yield traits. The results show that the population has rich genetic variation and there are significant differences among the individual plants of population. Twenty excellent selfing plants are selected from 138 test varieties as a new round of reincarnation parent correspondingly. It is expected that the yield combining ability of the new round of composite population will increase by 11.6%, milking and dehydration rate will be superior to the control and agronomic traits will also be improved accordingly.