农业生物技术学报2013，Vol.21Issue(8)：896-903,8.DOI:10.3969/j.issn.1674-7968.2013.08.002
空间诱变对玉米自交系产量性状配合力的诱变效应
Combining Ability Effects of Three Maize(Zea mays L.) Inbred Lines by Space Flight
摘要
Abstract
Space mutation breeding with the characteristics of high efficiency,large variation rang and short breeding period,is an important way of improving germplasm,broadening germplasm foundation and enriching germplasm resources.In order to understand the mutagenic effect on the combining ability for different inbred lines after spaceflight,three maize(Zea mays L.) inbred lines 08-641,RP125 and 18-599 were used as basic materials for space mutation,some mutation lines obtained from these three inbred lines were used as female parent for three sets of diallel cross design with Mo17,478,Huangzaosi and so on as male parent according to NC Ⅱdesign.The combinations were evaluated at two different locations both in Sichuan and Yunnan,and the general combining ability (GCA) for plant yield was analysed.The results showed that GCA of yield per plant in these mutant lines from 08-641 and RP125 decreased compared with their originalmaterials but GCA of yield per plant in the mutant line Y2709 and Y3235 from 18-599 increased significantly.Space mutation had an effect on the combining ability of plant yield traits in three maize inbred lines with different degrees,the overall performance showed that the variation range in the RP125 mutant line was the biggest,the 18-599 mutation line was the second,and the 08-641 mutation line was the smallest.Hybrid heterosis in mutant lines S1449,Y2803,Y3165,and Y3235 performed significantly higher compared with their original material and might have great potential in breeding.These results not only enrich the material basis of corn breeding,but enrich the theoretical content for mutation breeding.关键词
玉米/空间诱变/单株产量/配合力Key words
Maize/Space mutagenesis/Yield per plant/Combining ability引用本文复制引用
张采波,吴章东,徐冬平,荣廷昭,曹墨菊..空间诱变对玉米自交系产量性状配合力的诱变效应[J].农业生物技术学报,2013,21(8):896-903,8.基金项目
"十二五"国家高技术研究发展计划(863)重点课题(No.2011AA10A103,No.2012AA101202)和"十一五"国家科技支撑计划(No.2008BAD97B03) （863）
