华南农业大学学报2012，Vol.33Issue(4)：434-437,4.
不同种植密度条件下玉米自交系最佳选系的研究
The Best Maize Inbred Lines Selected Under the Different Density Conditions
摘要
Abstract
Taking PH4CV X chang7-2 as the basic material, inbred lines were selected under the selective pressure of 6 × 104 , 9 × 104 , 1. 2 × 105 and 1. 5 × 105 plants/hm2. The NC II design was composed of 4 backbone inbred lines and 5 representative lines which were selected from the F4 generation, and the yield performance, GCA and SCA were analyzed. The results indicated that GCA of 5 inbred lines selected under the 1. 2 × 105 plants/hm2were all positive, and the highest value 12F-3 was 12. 74, the parents who had the highest value of SCA also came from the inbred lines under the selective density of 1. 2 × 105 plants/hm2. Meanwhile, the yield of the combination which derived from that density was much higher than the best of CK,and the highest grain yield per plot was 15. 57 kg from PH6WC × 12F-5. The 1. 2 × 10 plants/hm was considered the best density for PH4CV × Chang7-2 combination among the 4 selective densities.关键词
玉米/密度/自交系/配合力Key words
maize/density/inbred line/combining ability分类
农业科技引用本文复制引用
李继竹,王贺,尹日成,任雪娇,胡洋,杨伟光..不同种植密度条件下玉米自交系最佳选系的研究[J].华南农业大学学报,2012,33(4):434-437,4.基金项目
农业部948项目(2011-G1-21) （2011-G1-21）
吉林省科技发展计划项目(20116030) （20116030）
农业部转基因生物新品种培育重大项目(2009ZX08003-024B) （2009ZX08003-024B）
