摘要
【目的】从形态标记水平了解广西地方甘薯种质资源的遗传关系,消除同名异物和同物异名的现象,为甘薯种质资源的有效开发和利用提供理论依据。【方法】依据"甘薯种质资源描述规范和数据标准",选择33项性状指标作为形态鉴定参数,对收集的136个地方甘薯种质资源进行性状测量及鉴定,利用DPS软件对数据进行聚类分析。【结果】136份广西地方甘薯种质资源可被分为4类:第Ⅰ类包括7份材料,第Ⅱ类包括2份材料,第Ⅲ类包括60份材料,第Ⅳ类包括67份材料,其中包括24对同物异名和3对同名异物的材料。【结论】广西地方甘薯种质资源间存在较大的遗传差异;选择与甘薯特征特性密切相关的形态标记作为鉴定参数对甘薯种质资源进行初步的分类鉴定和筛选是可行的。
[Objective]This study was conducted to elucidate the genetic relationship amongst local sweet potato germplasm resources collected from Guangxi in order to reduce discrepancies, eliminate homonym and synonym materials in their identification, and to provide references for effective utilization and development of sweet potato germplasm resources. [Method]According to current data description and standards of sweet potato germplasm resources, 33 indices were selected as criteria and measured in 136 local sweet potato germplasm resources. The collected data were analyzed using cluster analysis with DPS software. [Result]On the basis of UPGMA cluster analysis, 136 local sweet potato materials were classified into 4 groups containing 7, 2, 60 and 67 sweet potato materials in 1st, 2nd, 3rd and 4th groups, respectively. Also, it included 24 pairs of synonym materials and 3 pairs of homonym materials. [Conclusion]High genetic variations amongst Guangxi local sweet potato germplasm resources were observed. And it was found feasible to use morphological indices as markers for preliminary identification, selection and classification of sweet potato germplasm resources.
出处
《南方农业学报》
CAS
CSCD
北大核心
2012年第1期5-10,共6页
Journal of Southern Agriculture
基金
国家甘薯产业技术体系南宁综合试验站资助项目(CARS-11-C-19)
广西科学技术厅基本科研业务专项项目[玉200804(基)]
广西农业科学院科技发展基金项目(201002)
广西甘薯种质资源鉴定评价与创新利用研究(桂农科2011YZ05)
关键词
甘薯
种质资源
形态标记
聚类分析
广西
sweet potato
germplasm resource
morphological markers
cluster analysis
Guangxi
