小麦微核心种质旗叶形态性状的遗传分析  

Genetic Analysis of Flag Leaf Morphology in Wheat Micro-core Germplasm

作　　者：张咪咪 赵秋月 韩俊[1] ZHANG Mi-mi;ZHAO Qiu-yue;HAN Jun(Key Laboratory of Agricultural Application and New Technology,College of Plant Science and Technology,Beijing University of Agriculture,Beijing 102200)

机构地区：[1]北京农学院植物科学技术学院农业应用与新技术重点实验室,北京102200

出　　处：《安徽农业科学》2022年第8期29-32,35,共5页Journal of Anhui Agricultural Sciences

基　　金：青海省作物分子育种重点实验室开放课题基金项目(2017-ZJ-Y14)。

摘　　要：以262份小麦微核心种质为试验材料,对其进行2年2点共4个环境型的旗叶形态性状(长度、宽度、长宽比、叶面积)表型鉴定,并分析了旗叶形态性状与籽粒千粒重的相关性。结果表明,旗叶形态性状数值均呈单峰的偏正态分布。旗叶长度、宽度、长宽比、叶面积变异幅度分别为10.41~39.31 cm、0.83~2.32 cm、7.83~28.38、7.61~61.00 cm^(2)。不同环境型和基因型下的旗叶形态性状均差异极显著。旗叶长度、宽度、长宽比、叶面积遗传力分别为89.44%、39.51%、90.18%、95.17%。旗叶长度、叶面积与千粒重呈极显著负相关,旗叶宽度与千粒重呈显著正相关。该研究为进一步利用微核心种质发掘与小麦旗叶性状相关的新基因位点提供基础数据资料,并为小麦旗叶形态的分子遗传改良奠定基础。A total of 262 wheat microcore germplasm samples were used for phenotypic identification of flag leaf morphological traits(length,width,length-width ratio and leaf area)of four environmental types,and the correlation between flag leaf morphological traits and 1000-kernel weight was analyzed.The results showed that the values of the morphological traits of flag leaves showed a single peak distribution.The variation ranges of flag leaf length,width,length-width ratio and leaf area were 10.41-39.31 cm,0.83-2.32 cm,7.83-28.38 and 7.61-61.00 cm^(2),respectively.The morphological traits of flag leaves were significantly different under different environmental types and genotypes.Heritability of flag leaf length,width,length-width ratio and leaf area were 89.44%,39.51%,90.18%and 95.17%,respectively.There was a significant negative correlation between the length and area of flag leaf and 1000-grain weight,and a significant positive correlation between the width of flag leaf and 1000-grain weight.This research provided basic data for further exploration of new gene loci related to wheat flag leaf traits by using micro-core germplasm,and laid a foundation for molecular genetic improvement of wheat flag leaf morphology.

关 键 词：小麦 微核心种质 旗叶 遗传力 相关分析 

分 类 号：S512.1[农业科学—作物学]