Genetic effects of Agropyron cristatum 2P chromosome translocation fragments in a wheat background  

作　　者：XU Shi-rui JIANG Bo HAN Hai-ming JI Xia-jie ZHANG Jin-peng ZHOU Sheng-hui YANG Xin-ming LI Xiu-quan LI Li-hui LIU Wei-hua 

机构地区：[1]National Key Facility for Crop Gene Resources and Genetic Improvement,Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,P.R.China [2]Triticeae Research Institute,Sichuan Agricultural University,Chengdu 611130,P.R.China

出　　处：《Journal of Integrative Agriculture》2023年第1期52-62,共11页农业科学学报（英文版）

基　　金：supported by grants from the National Natural Science Foundation of China(32272083);the National Key Research and Development Program of China(2016YFD0100102).

摘　　要：Agropyron cristatum(2n=4x=28,PPPP)is a wild relative of common wheat which contains a large number of desirable genes that can be exploited for wheat improvement.Wheat–A.cristatum 2P alien translocation lines exhibit many desirable traits,such as small flag leaves,a high spikelet number and density,and a compact plant type.An agronomic trait evaluation and a genetic analysis were carried out on translocation lines and backcross populations of these lines carrying different translocation fragments.The results showed that a translocation fragment from 2PT-3(2PL)reduced the length of the flag leaves,while translocation fragments from 2PT-3(2PL)and 2PT-5(2PL(0.60–1.00))reduced the width of the flag leaves.A translocation fragment from 2PT-13(2PS(0.18–0.36))increased the length and area of the flag leaves.Translocation fragments from 2PT-3(2PL)and 2PT-8(2PL(0.86–1.00))increased the density of spikelets.Translocation fragments from 2PT-7(2PL(0.00–0.09)),2PT-8(2PL(0.86–1.00)),2PT-10(2PS),and 2PT-13(2PS(0.18–0.36))reduced plant height.This study provides a scientific basis for the effective utilization of wheat–A.cristatum translocation lines.

关 键 词：wheat-A.cristatum 2P chromosome translocation lines flag leaf spikelet density genetic effects 

分 类 号：S512.1[农业科学—作物学]