广西植物Issue(4)：557-564,603,9.DOI:10.11931/guihaia.gxzw201403017
不同基因型甘蔗种质资源的表型遗传多样性
Phenotypic and genetic diversity of sugarcane (Saccharum L.)protospecies and landraces
摘要
Abstract
In order to explore genetic diversity and relationship among different sugarcane species,select excellent sug-arcane germplasm and parental combination for hybridization,the present study was conducted for genetic diversity a-nalysis using 18 genotypes of protospecies and landraces of sugarcane (Saccharum spp.)with 14 quantitative traits. The results showed that the phenotypic and genetic diversity of sugarcane was highly significant in sucrose % cane, stalk weight,leaf width,stalk diameter and fiber % cane by coefficient of variation and correlation analysis of 14 quantitative traits.Four principal components of quantitative traits named quality factor,growth factor,maturity fac-tor and photosynthetic factor,respectively,were extracted from principal component analysis,and the cumulative con-tribution rate of four principal components was 83.48%.Ten desirable genotypes of sugarcane had higher values of quantitative traits than the averages in factor analysis in turn as follows:Sampana→Tiangeda→Heqingcao Ganzhe→Guilin Zhuzhe→Tanzania →Mango→Guzhizhe→Dadaozailai→Tuojianghong →Chunnee.The 18 accessions could be divided into five clusters based on the genetic distance,and potential hybrid may be developed by crossing Sampana with Tiangeda and/or Sampana with Heqingcao Ganzhe.It suggested that we should not only consider the comple-mentary of main traits,but also genetic distance when we select parents for crossing in sugarcane breeding.The pres-ent study proved that factor analysis was good to help the parental selection and determine crossing combinations in sugarcane breeding program.关键词
甘蔗/数量性状/遗传多样性/因子分析Key words
sugarcane/quantitative traits/genetic diversity/factor analysis分类
农业科技引用本文复制引用
杨翠凤,张春雅,杨丽涛,李杨瑞..不同基因型甘蔗种质资源的表型遗传多样性[J].广西植物,2015,(4):557-564,603,9.基金项目
国家“863”计划课题(2013AA102604) （2013AA102604）
国家国际合作项目(2009DFA30820,0S2013ZR0130) （2009DFA30820,0S2013ZR0130）
广西自然科学基金(2011GXNSFF018002) （2011GXNSFF018002）
广西科学研究与技术开发计划项目(桂科产1123008-1) （桂科产1123008-1）
广西农科院团队项目(桂农科2011YT01) （桂农科2011YT01）
