A rare natural variation in TaFT-D2 underlies QTss.cas-3D associated with increased total spikelet number per spike in wheat

扫码查看

原文链接

万方数据
维普

外文摘要：Total spikelet number per spike(TSS)is a crucial yield component in wheat.Dissecting and characterizing major stable quantitative trait loci(QTL)associated with TSS can significantly enhance the genetic improvement of yield potential.In a previous study,we identified a stable major QTL for TSS,named QTss.cas-3D.In the present study,we conducted fine mapping of QTss.cas-3D,interval to approximately 6.35 Mb,ranging from 105.03 to 111.38 Mb,based on the IWGSC RefSeq v2.1.Through genome re-sequencing and gene function annotation,we identified TraesCS3D03G0308000(TaFT-D2)as the candi-date gene.Phenotypic evaluation with paired near-isogenic lines revealed that this locus predominantly increases kernel number per spike by enhancing TSS and fertile spikelet number per spike,without sig-nificantly affecting thousand-kernel weight or tiller number.The presence of the TaFT-D2 allele in the parent P3228,which is rare in nature populations,highlights its potential value.This study provides a valuable gene resource and functional marker for wheat molecular breeding aimed at improving TSS and establishes a foundation for gene functional analysis of TaFT-D2.

外文关键词：

WheatTotal spikelet number per spikeFine mappingTaFT-D2

作者：

Hong Liu、Zhipeng Shi、Guohao Han、Jinpeng Zhang、Tiantian Gu、Jing Wang、Hanwen Yan、Lixian Xing、Lihui Li、Diaoguo An

展开 >

作者单位：

Center for Agricultural Resources Research,Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,Shijiazhuang 050021,Hebei,China

Institute of Crop Science,Chinese Academy of Agricultural Sciences,Beijing 100081,China

Yazhouwan National Laboratory,Sanya 572024,Hainan,China

出版年：

2024

DOI：

10.1016/j.cj.2024.08.006

作物学报(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.12(6)