Investigation of Aegilops umbellulata for stripe rust resistance,heading date,and the contents of iron,zinc,and gluten protein  

作　　者：SONG Zhong-ping ZUO Yuan-yuan XIANG Qin LI Wen-jia LI Jian LIU Gang DAI Shou-fen YAN Ze-hong 

机构地区：[1]State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China,Chengdu 611130,P.R.China [2]Triticeae Research Institute,Sichuan Agricultural University,Chengdu 611130,P.R.China

出　　处：《Journal of Integrative Agriculture》2023年第4期1258-1265,共8页农业科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(31771783);the Key Research and Development Program of Sichuan Province,China(2021YFYZ0002);the Sichuan Science and Technology Program,China(2018HH0130 and 2022YFH0105)。

摘　　要：Aegilops umbellulata(UU)is a wheat wild relative that has potential use in the genetic improvement of wheat.In this study,46 Ae.umbellulata accessions were investigated for stripe rust resistance,heading date(HD),and the contents of iron(Fe),zinc(Zn),and seed gluten proteins.Forty-two of the accessions were classified as resistant to stripe rust,while the other four accessions were classified as susceptible to stripe rust in four environments.The average HD of Ae.umbellulata was significantly longer than that of three common wheat cultivars(180.9 d vs.137.0 d),with the exception of PI226500(138.9 d).The Ae.umbellulata accessions also showed high variability in Fe(69.74-348.09 mg kg^(-1))and Zn(49.83-101.65 mg kg^(-1))contents.Three accessions(viz.,PI542362,PI542363,and PI554399)showed relatively higher Fe(230.96-348.09 mg kg^(-1))and Zn(92.46-101.65 mg kg^(-1))contents than the others.The Fe content of Ae.umbellulata was similar to those of Ae.comosa and Ae.markgrafii but higher than those of Ae.tauschii and common wheat.Aegilops umbellulata showed a higher Zn content than Ae.tauschii,Ae.comosa,and common wheat,but a lower content than Ae.markgrafii.Furthermore,Ae.umbellulata had the highest proportion of γ-gliadin among all the species investigated(Ae.umbellulata vs.other species=mean 72.11%vs.49.37%;range:55.33-86.99%vs.29.60-67.91%).These results demonstrated that Ae.umbellulata exhibits great diversity in the investigated traits,so it can provide a potential gene pool for the genetic improvement of these traits in wheat.

关 键 词：Aegilops umbellulata stripe rust resistance heading date Fe and Zn gluten proteins genetic variation 

分 类 号：S512.1[农业科学—作物学]