摘要
对燕山板栗分布地区的11个县/区(群体)的127份资源花序相关表型性状进行了遗传变异研究,为中国板栗资源描述的规范化和标准化,板栗资源的保存、核心种质的构建和农艺学性状基因定位提供数据基础和理论依据。对相关的15个性状系统调查后进行了遗传多样性分析、相关性分析、主成分分析和聚类分析。结果表明:燕山板栗资源花序相关性状具有丰富的表型多样性,平均变异系数和平均多样性指数分别为27.55%和1.99,其中两性花序数/总花序数的变异系数最大为64.80,雄花序数/总花序数变异系数最小为7.52,雄蕊长度的多样性指数最高为2.08,两性花序数/总花序数多样性指数最低为1.89;15个板栗花序表型性状中有9个性状在群体间的差异均达到显著以上水平;相关性分析表明:花序形态表型性状内部间的相关性较明显,花序数量表型性状内部间的相关性较明显,但花序形态和花序数量表型性状间相关性略低。主成分分析表明:前5个主成分反映了总信息量的85.35%,两性花序数/果枝、花序长粗比、花序粗度、花序长度、两性花序数/总花序数、雄花序数/总花序数、雌花数/果枝、雄蕊长、轴序粗度比9个性状是造成燕山板栗花序性状变异的主要因素,以第一主成分和第二主成分为标准,将127份资源分为5类群,并筛选出3份高雌花量的板栗资源;聚类分析将127份资源分为8个类群,花序相关表型性状变异相同的材料大多聚在一起,聚类结果和主成分划分类群基本一致。
Genetic variations analysis of 127 Yanshan chestnut germplasms from 11 populations 15 phenotypic traits related catkin of Yanshan chestnut were designed with genetic diversity analysis,correlation analysis and principal component analysis,in order to provide valuable basic data and theory foundation for normalization,standardization,preservation and construction of chestnut core collections,provides the basis for the gene localization of agronomic traits.The results showed that:phenotypic traits related catkin of Yanshan chestnut were rich in phenotypic diversity,with mean variation coefficient(CV)of 27.55%and Shannon′s diversity index(H′)of 1.99.The mean variation coefficient(CV=64.80)of bisexual catkin numbers/catkin numbers was the largest,the mean variation coefficient(CV=7.52)of male catkin numbers/catkin numbers was the smallest.The Shannon′s diversity index(H′=2.08)of stamen length was the highest,the Shannon′s diversity index(H′=1.89)of bisexual catkin numbers/catkin numbers were the lowest.9 phenotypic traits related to catkin were highly significant which indicated that a wide range of variation existed in these two levels.Correlation analysis showed that:More flower traits were highly significantly and extreme significantly related.Principal component analysis showed that floral traits in the first 5 principal components reflect the total information content 85.35%,bisexual catkin numbers/bearing shoot,catkin length/catkin width,catkin width,catkin length,bisexual catkin numbers/catkin numbers,male catkin numbers/catkin numbers,female flower numbers/bearing shoot,stamen length,floral axis length/floral axis width,9 characters was the main factor causing variation in traits of Yanshan chestnut.The 127 materials were divided into 8 kinds of cluster analysis.Flower character same source with similar material part can get together,the results were similar to principal component analysis.
作者
杨振立
王广鹏
张树航
郭燕
张馨方
李颖
YANG Zhenli;WANG Guangpeng;ZHANG Shuhang;GUO Yan;ZHANG Xinfang;LI Ying(Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050000, China;Changli Institute of Pomology,Hebei Academy of Agriculture and Forestry Sciences,Changli 066600,China)
出处
《华北农学报》
CSCD
北大核心
2020年第S01期93-101,共9页
Acta Agriculturae Boreali-Sinica
基金
河北省农林科学院创新工程项目(2019-3-4-2)
河北省科技计划项目(16226312D)
河北省农林科学院创新团队项目(F20E06001)。
关键词
燕山板栗
种质资源
花序
表型性状
遗传多样性
Yanshan chestnut
Germplasm
Catkin
Phenotypic traits
Genetic diversity
