文献类型：期刊文献

中文题名：欧李优良单株叶片表型性状的遗传多样性

英文题名：Genetic diversity of leaf phenotypic traits of Prunus humilis superior individuals

作者：刘一超[1] 王淋[2] 包福海[1] 陈俊兴[1] 蔺悦[1] 包文泉[1] 敖敦[1]

第一作者：刘一超

机构：[1]内蒙古农业大学林学院,内蒙古呼和浩特010018;[2]中国林业科学研究院经济林研究所,河南郑州450003

年份：2023

卷号：41

期号：4

起止页码：183-190

中文期刊名：经济林研究

外文期刊名：Non-wood Forest Research

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：内蒙古自治区高等学校“青年科技英才支持计划”项目(NJYT22032)。

语种：中文

中文关键词：欧李;叶片;表型性状;遗传多样性

外文关键词：Prunus humilis;leaf;phenotypic traits;genetic diversity

分类号：S662.3

摘要：【目的】为欧李种质资源的遗传改良和良种选育提供参考。【方法】以内蒙古、山西、河北、甘肃、山东等8个省份的71个欧李优良单株为研究材料,对其叶片的长度、宽度、形状、基部形状等8个表型性状进行遗传多样性分析、相关性分析及聚类分析。【结果】欧李叶片的质量性状之间存在较大差异,多样性指数为0.841~1.572,叶片形状和叶片顶端形状具有较高的遗传多样性,多样性指数分别为1.572、1.404。叶片形状可被分为5种类型,其中窄倒卵圆形叶片的数量占比最大(28.17%),倒卵圆形叶片数量占比最小(12.68%)。欧李叶片的数量性状中,叶形指数的变异系数最高(26.61%),叶片长度的变异系数最低(13.12%),欧李叶片数量性状的平均变异系数为20.76%。相关性分析结果表明,供试样本中叶形指数与叶宽、叶柄长之间的相关性均达到极显著水平(P<0.01),叶宽与叶长之间的相关性达到显著水平(P<0.05)。聚类分析结果表明,当平方欧氏距离为5时,可将供试的71个欧李优良单株分为4个类群:第1类群主要包括内蒙古和山西地区的欧李样本,占第1类群数量的85.96%,其主要特点是叶片基部形状为中楔形;第2类群包括内蒙古、山西、甘肃3个省份的欧李样本,其中甘肃地区的样本数量占比最高(42.86%),其特点是叶柄最长(6.55 mm);第3类群包括山东、河北、吉林、山西、内蒙古5个省份的6个欧李样本,其特征是叶片较长(95.53 mm);第4类群仅包含内蒙古赤峰市的欧李优良单株。【结论】内蒙古地区和山西地区的欧李叶片具有丰富的遗传多样性。
【Objective】It provides reference for genetic improvement and breeding of Prunus humilis germplasm resources.【Method】The genetic diversity analysis,correlation analysis and cluster analysis were carried out on 8 phenotypic traits such as leaf length,width,shape and base shape of 71 P.humilis superior individuals from 8 provinces such as Inner Mongolia,Shanxi,Hebei,Gansu and Shandong.【Result】There was a large variation among qualitative traits of P.humilis leaf,with the Shannon-Wiener diversity index ranging from 0.841-1.572,and leaf shape(1.572)and leaf tip shape(1.404)showing a high genetic diversity.Leaf shape was divided into five types,with narrow obovoid accounting for the largest proportion(28.17%)and obovoid for the smallest(12.68%).Among the quantitative traits of P.humilis leaf,the coefficient of variation of leaf shape index was the highest(26.61%),the coefficient of variation of leaf length was the lowest(13.12%),and the average coefficient of variation of quantitative traits of P.humilis leaf was 20.76%.The results of correlation analysis showed that the correlation between leaf shape index and leaf width and petiole length reached a very significant level(P<0.01),and the correlation between leaf width and leaf length reached a significant level(P<0.05).The results of the cluster analysis showed that when the squared Euclidean distance was 5,the 71 superior individual plants of P.humilis could be divided into four groups:Taxon 1 mainly includes samples of P.humilis from Inner Mongolia and Shanxi,both of which account for 85.96%of the first taxon,whose main characteristic was the medium cuneate shape of the leaf base;Taxon 2 included samples from three provinces,Inner Mongolia,Shanxi and Gansu,with the highest proportion of samples from Gansu(42.86%),characterized by the longest petiole(6.55 mm);Taxon 3 included 6 P.humilis samples from 5 provinces of Shandong,Hebei,Jilin,Shanxi and Inner Mongolia,which were characterized by long leaf(95.53 mm);Taxon 4 only contained the superior individuals of P.humilis in Chifeng,Inner Mongolia.【Conclusion】The leaf of P.humilis in Inner Mongolia and Shanxi have rich genetic diversity.