Selection and application of four QTLs for grain protein content in modern wheat cultivars  

作　　者：Zihui Liu Xiangjun Lai Yijin Chen Peng Zhao Xiaoming Wang Wanquan Ji Shengbao Xu 

机构地区：[1]State Key Laboratory of Crop Stress Biology for Arid Areas/College of Agronomy,Northwest A&F University,Yangling 712100,China

出　　处：《Journal of Integrative Agriculture》2024年第8期2557-2570,共14页农业科学学报（英文版）

基　　金：supported by the“Integration of Two Chains”Key Research and Development Projects of Shaanxi Province“Wheat Seed Industry Innovation Project”,China;the Key R&D of Yangling Seed Industry Innovation Center,China(Ylzy-xm-01)。

摘　　要：The grain protein content(GPC)is the key parameter for wheat grain nutritional quality.This study conducted a resampling GWAS analysis using 406 wheat accessions across eight environments,and identified four previously reported GPC QTLs.An analysis of 87 landraces and 259 modern cultivars revealed the loss of superior GPC haplotypes,especially in Chinese cultivars.These haplotypes were preferentially adopted in different agroecological zones and had broad effects on wheat yield and agronomic traits.Most GPC QTLs did not significantly reduce yield,suggesting that high GPC can be achieved without a yield penalty.The results of this study provide a reference for future GPC breeding in wheat using the four identified QTLs.

关 键 词：BREEDING grain protein content haplotype selection and application WHEAT 

分 类 号：S512.1[农业科学—作物学]