青海野生中国沙棘资源表型性状多样性分析
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青海大学农牧学院

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国家自然科学基金(31660071),青海省科技厅项目(2017-ZJ-734),青海省“高端创新人才千人计划”项目。


Phenotypic Diversity Analysis of Hippophae rhamnoides subsp. Sinensis wild Germplasm in Qinghai Province
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College of Agriculture and Animal Husbandry, Qinghai University

Fund Project:

National Natural Science Foundation of China (31660071), Qinghai Provincial Science and Technology Department Project (2017-ZJ-734), Qinghai Province "High-end Innovation Talents Thousand Talents Program" project

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    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;聚类分析结果显示,在欧式距离15处,可将供试材料分为3个类群。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。

    Abstract:

    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 had rich phenotypic diversity in Qinghai Province, the coefficient of variation of 12 phenotypic characters ranged from 16.49% to 58.76%. Among them, ground diameter, tree height and thorn length had great variation, and the coefficient of variation was over 50%. Correlation analysis showed that there were significant or extremely significant correlations among all characters except tree height, branch, ground diameter and leaf width. At the same time, the phenotypic traits of Seabuckthorn were correlated with latitude and altitude, and different traits were affected by different geographical factors, among which the leaf traits were the most affected. Four principal components with eigenvalues greater than 1 were selected by principal component analysis, and the cumulative contribution rate was 86.35%, which contained most of the information about phenotypic traits of Seabuckthorn. Fruit weight had the greatest effect on phenotypic traits diversity of Seabuckthorn. The results of cluster analysis showed that at 15 Euclidean distances, the tested materials could be divided into three groups. These results indicate that the phenotypic characters of Seabuckthorn resources in Qinghai are rich in diversity and have 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.

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历史
  • 收稿日期:2023-01-15
  • 最后修改日期:2023-02-01
  • 录用日期:2023-03-09
  • 在线发布日期: 2023-03-15
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