Identification of QTL for maize grain yield and kernel-related traits

Journal of genetics

LEI ZHANG¹  TINGZHAO RONG¹  CONG YANG¹  AIMIN JIA¹ 

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关键词: maize;    grain yield;    kernel-related traits;    quantitative trait locus;   

DOI  :  

学科分类：生物科学（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Grain yield (GY) is one of the most important and complex quantitative traits in maize (Zea maysL.) breeding practice.Quantitative trait loci (QTLs) for GY and three kernel-related traits were detected in a set of recombinant inbred lines (RILs).One hundred and seven simple sequence repeats (SSRs) and 168 insertion/deletion polymorphism markers (Indels) were usedto genotype RILs. Eight QTLs were found to be associated with four yield-related traits: GY, 100-kernel weight (HKW),10-kernel length (KL), and 10-kernel length width (KW). Each QTL explained between 5.96 (qKL2-1) and 13.05 (qKL1-1)per cent of the phenotypic variance. Notably, one common QTL, located at the marker interval betweenbnlg1893andchr2-236477(chromosomal bin 2.09) simultaneously controlled GY and HKW; another common QTL, at bin 2.03 was simulta-neously responsible for HKW and KW. Of the QTLs identified, only one pair of significant epistatic interaction involved inchromosomal region at bin 2.03 was detected for HKW; no significant QTL×environment interactions were observed. Theseresults provide the common QTLs and for marker-assisted breeding

【 授权许可】

Unknown