青海野生中国沙棘资源表型性状多样性分析  

Phenotypic Traits Diversity Analysis of Hippophae rhamnoides subsp.sinensis Wild Germplasm in Qinghai Province

作　　者：刘青青 李雄杰 马亚琼 成美佳 王晨兆 高佩 马福林 郝静雯 刘瑞 冶贵生[1] 马玉花[1] LIU Qing-qing;LI Xiong-jie;MA Ya-qiong;CHENG Mei-jia;WANG Cheng-zhao;GAO Pei;MA Fu-lin;HAO Jing-wen;LIU Rui;YE Gui-sheng;MA Yu-hua(College of Agriculture and Animal Husbandry,Qinghai University,Xining 810016)

机构地区：[1]青海大学农牧学院,西宁810016

出　　处：《植物遗传资源学报》2023年第4期1057-1064,共8页Journal of Plant Genetic Resources

基　　金：国家自然科学基金(31660071);青海省科技厅项目(2017-ZJ-734)

摘　　要：为探究青海省野生中国沙棘资源表型性状多样性,本研究以青海省10个地区150份野生中国沙棘为材料,对其12个表型性状进行了表型多样性分析。结果表明:青海省内中国沙棘资源具有丰富的表型多样性,12个表型性状的变异系数为16.49%~58.76%。其中地径、树高和刺长是变异较大的性状,变异系数均超50%。相关性分析显示,除树高、分枝、地径以及叶宽与其他性状间没有显著的相关关系外,其他性状均存在显著或极显著的相关关系。同时,中国沙棘表型性状与纬度和海拔有一定的相关关系,且不同性状受地理因子影响也不同,其中叶片性状受影响最大。主成分分析筛选出4个特征值大于1的主成分,累计贡献率为86.35%,包含了中国沙棘表型性状的大部分信息,百果重对中国沙棘表型性状多样性的影响最大。上述结果表明青海中国沙棘资源的表型性状具有丰富的多样性,具有极大的开发利用潜力。本研究为中国沙棘优良种质资源的选育及保存提供了科学依据。In order to explore the phenotypic diversity of wild Hippophae rhamnoides subsp.sinensis resources in Qinghai province,150 wild seabuckthorn resources from 10 regions in Qinghai province were collected and 12 phenotypic traits were analyzed.The results showed that seabuckthorn represented rich phenotypic diversity,with the coefficient of variation of 12 phenotypic characters ranged from 16.49%to 58.76%.Especially,three trait including ground diameter,tree height and thorn length were observed with great variations,showing the coefficient of variation over 50%.Correlation analysis revealed significant or extremely significant correlations among all characters except tree height,branch,ground diameter and leaf width.The phenotypic traits were observed correlating with latitude and altitude.The different traits were affected by different geographical factors,among which the leaf traits were largely affected.Four principal components with eigenvalues greater than 1 were revealed by principal component analysis,showing the cumulative contribution rate of 86.35%.Hundred fruit weight was detected with the greatest effect on phenotypic traits diversity.These results indicate abundant phenotypic diversity in population of seabuckthorn resources in Qinghai,with great potential for exploitation and utilization.This study provided a scientific basis for the breeding and preservation of excellent germplasm resources of Hippophae rhamnoides subsp.sinensis.

关 键 词：中国沙棘 表型性状 多样性分析 

分 类 号：S793.6[农业科学—林木遗传育种]