中国农业科学2012，Vol.45Issue(8)：1636-1643,8.DOI:10.3864/j.issn.0578-1752.2012.08.020
豫综5号玉米综合种淀粉含量轮回选择效果分析
Improvement Efficiency of Recurrent Selection for Starch Content in Maize Population Yu Syn5
摘要
Abstract
[Objective] The objective of the study is to evaluate the improvement efficiency in maize population Yu Syn5 so as to provide reference for creating high-starch content germplasm resources, breeding high-starch content hybrids and keeping on improving starch content of Yu Syn5. [Method! The improvement for starch content in maize population Yu Syn5 was made for4 cycles using near infrared analytical technology. Twenty testcrossing combinations made by Huangzao 4, Dan 340, Qi 319, Ye 478 and Mol7 and crossed for four cycles to improve the populations according to NCII design were evaluated for the starch content and the combining ability in two environments. [Result] The starch content of Yu Syn5 gradually increased from 69.39% of Co to 72.31% of C4 with increase of improvement cycles, which the actual gain of 2.92% was obtained after four cycles improvement. But the protein content and lysine content decreased with increase of improvement cycles. The starch content of testcrossing combinations also increased with increase of improvement cycles. The results showed that the recurrent selection of nondestructive starch content of single grain could effectively improve the starch content of Yu Syn5. Regarding the general combining ability (GCA), the value of starchcontent GCA was improved in each cycle for the populations. The values of special combining ability (SCA) between Huangzao4 and the improved populations were increased per cycle, while the values of SCA between other 4 testers and the populations appeared fluctuation. [Conclusion] It was efficient to improve the starch content of Yu Syn5 by the recurrent selection of nondestructive starch content of single grain. The starch content of populations gradually increased with increase of improvement cycles.关键词
玉米/群体改良/单粒淀粉含量的轮回选择Key words
maize/improvement of population/recurrent selection of single grain starch content引用本文复制引用
库丽霞,王付娟,郭书磊,谢丽莉,刘海静,张君,田磊,陈彦惠..豫综5号玉米综合种淀粉含量轮回选择效果分析[J].中国农业科学,2012,45(8):1636-1643,8.基金项目
国家高技术研究发展计划(“863”计划)重大专项(2006AA100103)、河南省重大公益性项目 （“863”计划）
