福建农业学报2026，Vol.41Issue(5)：527-534,8.DOI:10.19303/j.issn.1008-0384.2026.05.001
39份早熟甜玉米早代系性状综合分析及育种潜力评估
Potential Breeding Applications of 39 Early-maturing Sweet Corn Lines
摘要
Abstract
[Objective]Agronomy and quality of early generation progenies of 39 early-maturing sweet corn lines were evaluated for breeding high-yield,high-quality fresh-eating varieties.[Methods]Growth periods of 192 sweet corn germplasms were investigated,and 39 representative inbred lines were selected.Using North Carolina Design II(NCDII),the selected lines were crossed with 3 testers(B1,B2,B3)to produce 117 hybrid combinations.Systematic phenotypic evaluation was conducted,and statistical analysis,principal component analysis(PCA)and combining ability analysis were jointly performed to comprehensively assess breeding potential of the materials.[Results]Cluster analysis showed that the 39 materials fell into distinct groups with obvious genetic divergence.The distribution of traits indicated that key indices including plant height,ear height,growth period and sugar content followed normal distributions.Most combinations were within elite ranges and could be further improved.Three principal components were extracted via PCA,representing yield,quality and plant architecture,respectively.A trade-off between yield and sugar content was observed,offering a theoretical basis for synchronous multi-trait selection.Combining ability analysis revealed that additive genetic effects were predominant,with a high ratio of general combining ability(GCA)variance to specific combining ability(SCA)variance.Elite high-yield inbred lines A233 and A74,and high-quality inbred lines A859 and A837 were identified.[Conclusion]By comprehensively analyzing the distribution,principal components,and combining ability on agronomic traits of the early generation progenies of 39 early-maturing sweet corn lines,a trade-off between yield and quality seemed existed for the breeding program.A233 and A859 appeared to be the choice candidates for breeding desirable new varieties.关键词
甜玉米/产量/品质/主成分分析/配合力/育种潜力Key words
sweet corn/yield/quality/principal component analysis/combining ability/breeding potential分类
农业科技引用本文复制引用
杨慧娴,柯恩添,王迪,颜静宛,徐福乐,赵良侠,田大刚..39份早熟甜玉米早代系性状综合分析及育种潜力评估[J].福建农业学报,2026,41(5):527-534,8.基金项目
福建省科技计划公益类专项(2024R1026007) （2024R1026007）
