Husk number(HN) and husk length(HL) influence the mechanical harvesting of maize grain. We investigated the genetic basis of HN and HL using a population of 204 recombinant inbred lines phenotypically evaluated in five environments. The two husk traits showed broad phenotypic variation and high heritability. Nine stable quantitative trait loci(QTL) were identified by single-environment mapping, comprising four QTL for HN and five for HL, and three QTL explained >10% of the phenotypic variatio...

【文章頁數(shù)】：10 頁

【文章目錄】：
1. Introduction
2. Materials and methods
    2.1. Plant materials and field experiments
    2.2. Phenotypic data analysis
    2.3. Genotyping,bin map construction,and molecular marker development
    2.4. QTL analysis
    2.5. Candidate gene analysis
3. Results
    3.1. Phenotypic variation and heritability of HN and HL
    3.2. QTL mapping of HN and HL in individual environment
    3.3. Joint mapping for HN and HL under multiple environments
    3.4. Epistatic QTL-by-environment interactions for multiple environments
    3.5. Fine mapping of q HN7
    3.6. Candidate genes in the q HN7 region
4. Discussion
    4.1. HN and HL are two important traits in maize mechanized breeding
    4.2. The RIL population was suited for QTL mapping of maize HN and HL
    4.3. Genetic complexity of maize HN and HL
    4.4. Fine mapping of q HN7,a major-effect QTL for HN
    4.5. Candidate gene analysis of q HN7
    4.6. Application of q HN7 in maize breeding
5. Conclusions



本文編號：3755092