小叶杨不同种源一年生扦插苗速生期表型性状变异定量分析  

Analysis on Phenotypic traits Variation of Different Provenances of 1-year Populus simonii Seedlings

作　　者：葛会硕 宋跃朋[2] 苏雪辉 张德强[2] 张晓宇 GE Hui-shuo;SONG Yue-peng;SU Xue-hui;ZHANG De-qiang;ZHANG Xiao-Yu(College of Science,Beijing Forestry University,Beijing 100083,China;College of Biological Sciences and Technology,Beijing Forestry University,Beijing 100083,China;Jiaozuo Academy of Agricultural and Forestry Sciences of Henan,Jiaozuo 454001,China)

机构地区：[1]北京林业大学理学院,北京100083 [2]北京林业大学生物科学与技术学院,北京100083 [3]焦作市农林科学研究院,河南焦作454001

出　　处：《浙江林业科技》2020年第1期23-31,共9页Journal of Zhejiang Forestry Science and Technology

基　　金：中央高校基础研究基金(2017ZY30、2015ZCQ-LY-01);国家自然科学基金(11501032)。

摘　　要：定量分析了来自我国15个种源(25°~42°N,95°~117°E)小叶杨Populus simonii一年生幼苗节间长度的相关性、表型性状的地区差异性以及变异性,将选取的样本划分为4个时期并借助因子分析对其23~26个节间长变量进行了相关性分析,借助人工蜂群K-means聚类(KABC)算法将样本分为2大类;并对不同地区样本表型变异定量分析。结果表明,因子分析将节间长度变量提取为4个公共节间长度因子,且每个因子由相邻的节间长度变量组成;KABC能较明显地根据小叶杨幼苗的表型性状(株高、叶片数、节数和4个公共节间长度因子)进行分类,第二类样本在株高、叶片数、节数性状上的均值大于第一类样本;15个种源7个表型性状的平均变异系数为6.09%~40.22%,具有较丰富的遗传多样性;平均表型分化系数为17.6%,且种源内变异大于种源间变异。小叶杨幼苗节间长度的相关性反映了幼苗生长特性,对小叶杨幼苗表型性状的关联分析可用于林业的多性状选择育种,也为进一步全基因组关联分析奠定了基础。Measurements on April 29 th,May 20 th,June 4 th,June 17 th 2017 were carried out on height,leaf number,internode length and number of1-year Populus simonii seedlings from 15 provenances.Quantitative analysis on internode length of tested provenances demonstrated that the upper part had faster growth,and neighboring internode had similar growth rate.Analysis by K-means clustering(KABC)algorithm on phenotypic traits variation of samples resulted that mean coefficient of variation ranged 6.09%-40.22%,indicating rich genetic diversity.The average phenotypic differentiation coefficient was 17.6%,and the variation within provenances was greater than that among provenances.

关 键 词：小叶杨 幼苗 表型性状 节间长度 表型变异 相关性分析 

分 类 号：S792.116[农业科学—林木遗传育种] S718.46[农业科学—林学]