四川农业大学学报 ›› 1993, Vol. 11 ›› Issue (04): 527-535.doi: 10.16036/j.issn.1000-2650.1993.04.007

• 研究论文 • 上一篇    下一篇

玉米自交系改良中亲本种质的选择和利用

兰发盛, 滕耀聪, 李德宾, 田守均, 卢乔云   

  1. 四川农科院作物所, 成都市 610066
  • 收稿日期:1993-06-29 出版日期:1993-12-31 发布日期:2017-04-22

SELECTION AND UTILIZATION OF PARENTAL GERMPLASMS FOR IMPROVEMENT OF MAIZE INBRED

Lan Fasheng, et al   

  1. Crop Breeding & Cultivation Institute, Sichuan Academy of Agricultural Sciences, Chengdu Sichuan, China, Zip Code 610066
  • Received:1993-06-29 Online:1993-12-31 Published:2017-04-22

摘要: 选择Mo17×330、77x330和Mo17×32为目标杂交种,以产量为主要改良性状,研究了自交系改良中种质选择和利用方法。结果表明,对各目标杂交种,参试供体自交系籽粒产量的UG、PTC、UBND值均存在极显著差异;其估值大的作为优良基因来源的供体系同被改良系间具有较远的亲缘关系。(C+F)-(D+E)值的大小同自交系间的亲缘关系吻合。可能找到既提高籽粒产量又降低植株高度的供体系。UG、PTC、UBND间存在极显著的正相关性,其中UG与PTC间的相关系数达0.90以上。

关键词: 玉米, 自交系改良, 亲本, 选择, 优良基因, 产量

Abstract: Selection and utilization of parental germplasms were studied for improvement of the parents of the maize (Zea mars L.) hybrids Mo17×330, 77×330 and Mo17×32 designated as targets, and UBND when each of the three hybrids were designated as a target. The donr lines that had higher values for uG, PTC, UBND, as source of new favorable alleles, were less related with the It appeared to be possible to find the donor lines that could improve yield and decrease plant height of target hybrids. Correlations among uG, PTC and UBND were high, positive and significant. The highest correlations, which frequently exceeded 0.90, were found between uG and PTC.

Key words: CORN, IMPROVEMENT OF INBRED LINE, CHOICE OF PARENTS, FAVORABLE ALLELE, YIELD

中图分类号: 

  • S513