摘要
对27份花生种质资源的10个主要农艺性状表现进行了变异和主成分分析。结果表明,单株秕果数、单株结果数、主茎高与单株双仁果数变异系数较大;前4个主成分对变异的累计贡献率达84.98%。根据各种质资源的主成分值判断其表现特点,选出了综合性状比较理想的10份品种作为育种亲本。利用各种质资源的前4个主成分值计算各品种间的遗传距离,按遗传距离大小在D2=3.21水平下将27份种质资源聚类划分为6大类群,其中Ⅱ类群品种数最多(16份),该类群品种综合性状也表现较好,大多可为育种亲本利用或推广种植提供选择。
The variation and principal component analysis of 10 principal agronomic traits in 27 peanut germplasm resources were conducted.The results indicated that the coefficient of variation of individual deef-pod,inividual pod,plant high and individual two-seed were bigger.The accumulative contribution rate of the first 4 principal component were 84.98%.Based on their principal component,we judged that the traits of every germplasm resource and selected 10 cultivar with better multiple traits to be used as parents in breeding.The genetic distance were calculated using the value of the first 4 principal component.Divided them into 6 groups at the level of D2=3.21,which based on the value of genetic distance.Among 6 groups,the groupⅡ had the most（16parts） number cultivar,and its multiple traits also displayed better.The most cultivar of the groupⅡ could be used to utilize as breeding parent or be spreaded.
出处
《植物遗传资源学报》
CAS
CSCD
北大核心
2011年第4期519-524,共6页
Journal of Plant Genetic Resources
基金
福建省莆田市重点科技计划项目(2008No7)
关键词
花生
种质资源
主成分分析
遗传距离
Peanut
Germplasm resources
Principal component analysis
Genetic distance
