摘要
采用表型性状变异分析和聚类分析,对国内外不同地理来源的456份割手密资源13个性状进行评价,初步了解其遗传多样性特点,为解决种质创新与品种改良遗传基础狭窄问题提供思路。结果表明,456份割手密在株高、叶长、叶宽、锤度等多个性状都表现出了极高的遗传变异,多样性指数介于0.97～7.92之间;对嵌纹病、眼点病的抗病性及对金龟子的抗虫性变异范围广;国内外不同地理来源的割手密群间的遗传变异较大,以云南割手密群体多样性最丰富。聚类分析结果表明,国内外割手密资源聚成三大不同类群,云南独自为一大类,国外割手密被归为第二大类,其他为第三大类。各类群在植株生长特性及锤度方面具有极显著差异。
456 Saccharum spontaneum L.derived from various geographical origins were evaluated by mutation analysis and cluster analysis based on 13 phenotype traits,to create initial knowledge with better understanding of their genetic diversity,and to provide useful informations for variety improvement in breeding programs.The results showed that the very high diversity was detected on all of the traits of 456 S.spontaneum L.in height of plant,length of leaf,width of leaf,brix,between 0.97 to 7.92 in Shannon index.It has a widely range of variation in mosaic disease,eyespot disease,tumblebug and so on.There is a large genetic variation among S.spontaneum L.resources in geographic origin,and it is the most abundance diversity of the S.spontaneumL.groups in Yunnan.By cluster analysis,the results showed that the S.spontaneum L.resources may be divided into 3 categories,Yunnan for a major category and the S.spontaneum L.introduced from abroad for the second category,others for the third category.Which all have the highly significant differences in plant growing characteristic and brix.
出处
《植物遗传资源学报》
CAS
CSCD
北大核心
2012年第5期825-829,共5页
Journal of Plant Genetic Resources
基金
广东省甘蔗种质资源库建设(2011B060400019)
高抗旱性斑茅F1亲本创制和选育研究(2011B060400018)
甘蔗温水去雄杂交制种技术研究(2011B020301002)
崖城系列亲本评价与利用研究(2010B060200019)
优质甘蔗种质鉴评与开发利用的数字化管理研究(2011B060500052)
现代农业产业技术体系建设专项资金(CARS-20-1-6)
国家自然科学基金(30800700)
关键词
割手密
表型性状
聚类分析
遗传多样性
S.spontaneum L.
Phenotypic character
Custer analysis
Genetic diversity
