热带作物学报2026，Vol.47Issue(1)：67-75,9.DOI:10.3969/j.issn.1000-2561.2026.01.007
甘蔗71个杂交组合的配合力分析与优质亲本筛选
Combining Ability Analysis of 71 Sugarcane Hybrid Combinations and the Screening of Key Parental Lines
摘要
Abstract
Sugarcane(Saccharum spp.)is the most significant global sugar crop,contributing approximately 80%of total sugar production worldwide.Developing high-yielding and high-sugar-content varieties is critical for enhancing sugar industry sustainability.To support this goal and optimize hybrid breeding strategies,this study evaluated 71 sug-arcane hybrid combinations derived from 75 parental lines,using six key agronomic traits:plant height,stalk diameter,brix(juice sugar content),number of effective stalks,cane yield and sugar yield.The main objective was to assess gen-eral combining ability(GCA)and specific combining ability(SCA),to identify superior parental lines and hybrid com-binations for sugarcane breeding programs.The GCA/SCA analyses were performed using the R software.Clustering analyses were conducted based on combining ability values to classify parental materials and hybrid combinations into distinct genetic performance groups.Results showed substantial genetic variation across hybrids,particularly in yield-related traits,with coefficients of variation exceeding 39.00%for effective stalks,cane yield and sugar yield,highlighting significant breeding potential.Conversely,brix exhibited the lowest variation(8.05%),indicating high ge-netic stability for sugar content traits.Notably,HoCP05-902,GT96-211,YT93-124,YT93-159,GT00-122 and YR05-704 were identified as elite male parents,while GT94-119,CP72-1210 and Eros were outstanding female lines.Two combinations,CP72-1210×GT96-211 and GT94-119×YT93-159,exhibited superior GCA and SCA values,achiev-ing excellent performance in both yield and sugar content.Additionally,GCA/SCA ratio analysis revealed that cane yield exhibited significant additive effects primarily inherited from the male parent.In conclusion,this research pro-vides valuable theoretical guidance and genetic resources for sugarcane breeding,highlighting key parental lines and hybrid combinations that can serve as core materials in developing next-generation high-yield,high-sugar sugarcane cultivars.关键词
甘蔗/杂交组合/配合力/聚类分析Key words
sugarcane/hybrid combinations/combining ability/cluster analysis分类
农业科技引用本文复制引用
唐思琪,刘家勇,赵培方,昝逢刚,姚丽,赵丽萍..甘蔗71个杂交组合的配合力分析与优质亲本筛选[J].热带作物学报,2026,47(1):67-75,9.基金项目
国家重点研发计划项目(No.2022YFD2301100) （No.2022YFD2301100）
广西科技重大专项(桂科AA23073001) （桂科AA23073001）
云南省科技计划项目(No.202404BP090025). （No.202404BP090025）
