摘要： 以13个玉米改良群体和4个标准测验种为材料,采用NCⅡ遗传设计,测定并分析了群体产量配合力、杂种优势、杂优模式和农艺性状.结果表明,WBM-C4、豫综5号、辽旅综群、中群14.黄综群5个群体产量一般配合力较高.在群体与测验种的52个杂交组合中,12个组合产量与单交种对照相当,特殊配合力较高,其中掖48×黄综群、黄早4×中群14、丹340×黄综群、黄早4×豫综5号4个组合比对照增产,对照优势为2.29%～4.82%.研究结果既说明了中国玉米群体改良取得的研究进展,又为这些改良群体进一步改良、利用和杂优组合模式构建提供了依据.
关键词:
玉米种质,
群体改良,
配合力,
杂优模式
Abstract: This study evaluated the combining ability, heterosis and heterotic pat terns of yield for the crosses between 4 line-testers represent ing the main heterotic groups of Chinese corns and 13 elite populations improved from the research groups. The analysis of variance showed that highly significant differences were observed for grain yield among genotypes, GCA of populat ions and SCA between populations and testers. The SCA of populat ions of WBM-C4, Yuzong No. 5, Liaoluzongqun, Zhongqun No. 14 and Huangzongqun were higher than that of others tested. Among 12 crosses with higher SCA and grain yields near to that of the check averaged from four commercial crosses, compared to 52 crosses, four cross comb-i nations of 478×Huangzongqun,Huangzao 4×Zhongqun No. 14, Dan 340×Huangzongqun andHuangzao 4×Yuzong No. 5 had the best special combining ability and higher yields than checks with heterosis of 2.29%~4.82%. The results not only showed the research progress in the population improvement of China, but also provided scientific basis for further improvement and utilization of these populations, and the establishment of heterotic patterns of chinese corns.
Key words:
Corn germplasm,
Population improvement,
Combining ability,
Heterotic pattern
中图分类号:
陈彦惠, 张世煌, 吴连成, 王铁固, 李明顺, 邓凌伟, 张明友, 白锦雯. 中国主要玉米改良群体杂种优势组合模式的初步评价[J]. 华北农学报, 2002, 17(4): 30-36. doi: 10.3321/j.issn:1000-7091.2002.04.008.
CHEN Yan-hui, ZHANG Shi-huang, WU Lian-cheng, WANG Tie-gu, LI Ming-shun, DENG Ling-wei, ZHANG Ming-you, BAI Jin-wen. A Primary Evaluation on Heterotic Patterns of Main Improved Populations of Corns in China[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(4): 30-36. doi: 10.3321/j.issn:1000-7091.2002.04.008.