Genomic insights into the origin and evolution of spelt(Triticum spelta L.)as a valuable gene pool for modern wheat breeding  

作　　者：Yongfa Wang Zihao Wang Yongming Chen Tianyu Lan Xiaobo Wang Gang Liu Mingming Xin Zhaorong Hu Yingyin Yao Zhongfu Ni Qixin Sun Weilong Guo Huiru Peng 

机构地区：[1]Frontiers Science Center for Molecular Design Breeding,Key Laboratory of Crop Heterosis and Utilization,Beijing Key Laboratory of Crop Genetic Improvement,China Agricultural University,Beijing 100193,China [2]Institute for Plant Genetics,Heinrich Heine University,40225 Dusseldorf,Germany [3]Sanya Institute of China Agricultural University,Sanya 572025,China

出　　处：《Plant Communications》2024年第5期75-90,共16页植物通讯（英文）

基　　金：supported by the National Natural Science Foundation of China (31991210);the National Key Research and Development Program of China (2021YFD1200104);the Strategic International Science and Technology Innovation Collaboration Project (2020YFE0202300);the 2115 Talent Development Program of China Agricultural University,the Pinduoduo-China Agricultural University Research Fund (PC2023 B01016);the China National Postdoctoral Program for Innovative Talents (BX20230414).

摘　　要：Spelt(Triticum aestivum ssp.spelta)is an important wheat subspecies mainly cultivated in Europe before the 20th century that has contributed to modern wheat breeding as a valuable genetic resource.However,relatively little is known about the origins and maintenance of spelt populations.Here,using resequencing data from 416 worldwide wheat accessions,including representative spelt wheat,we demonstrate that Eu-ropean spelt emerged when primitive hexaploid wheat spread to the west and hybridized with pre-settled domesticated emmer,the putative maternal donor.Genomic introgression regions from domesticated emmer confer spelt’s primitive morphological characters used for species taxonomy,such as tenacious glumes and laterflowering.We propose a haplotype-based"spelt index"to identify spelt-type wheat vari-eties and to quantify utilization of the spelt gene pool in modern wheat cultivars.This study reveals the ge-netic basis for the establishment of the spelt wheat subspecies in a specific ecological niche and the vital role of the spelt gene pool as a unique germplasm resource in modern wheat breeding.

关 键 词：WHEAT SPELT interspecific hybridization gene pool modern wheat breeding 

分 类 号：S512.1[农业科学—作物学] Q943.2[生物学—植物学]