Major QTL for Seven Yield-Related Traits in Common Wheat (Triticum aestivum L.).

IF 2.8 3区生物学 Q2 GENETICS & HEREDITY Frontiers in Genetics Pub Date : 2020-08-28 eCollection Date: 2020-01-01 DOI:10.3389/fgene.2020.01012

Jingjing Jin, Dan Liu, Yongzhi Qi, Jun Ma, Wenchao Zhen

{"title":"Major QTL for Seven Yield-Related Traits in Common Wheat (Triticum aestivum L.).","authors":"Jingjing Jin, Dan Liu, Yongzhi Qi, Jun Ma, Wenchao Zhen","doi":"10.3389/fgene.2020.01012","DOIUrl":null,"url":null,"abstract":"<p><p>Flag leaves, plant height (PH), and spike-related traits are key determinants contributing to yield potential in wheat. In this study, we developed a recombinant inbred line (RIL) population with 94 lines derived from the cross between 'AS985472' and 'Sumai 3.' A genetic map spanned 3553.69 cM in length were constructed using 1978 DArT markers. Severn traits including flag leaf width (FLW), flag leaf length (FLL), PH, anthesis date (AD), spike length (SL), spikelet number spike (SNS), and spike density (SD) were evaluated against this RIL population under three different environments. Combined phenotypic data and genetic map, we identified quantitative trait loci (QTL) for each trait. A total of four major and stably expressed QTLs for FLW, PH, and SD were detected on chromosomes 2D and 4B. Of them, the major QTLs individually explained 10.10 - 30.68% of the phenotypic variation. QTLs with pleiotropic effects were identified on chromosomes 4A and 6D as well. Furthermore, the genetic relationships between seven yield-related traits were detected and discussed. A few genes related to leaf growth and development at the interval of a major locus for FLW on chromosome 2D were predicated. Overall, the present study provided useful information for understanding the genetic basis of yield-related traits and will be useful for marker-assisted selection in wheat breeding.</p>","PeriodicalId":12750,"journal":{"name":"Frontiers in Genetics","volume":" ","pages":"1012"},"PeriodicalIF":2.8000,"publicationDate":"2020-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3389/fgene.2020.01012","citationCount":"18","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Frontiers in Genetics","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3389/fgene.2020.01012","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2020/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"GENETICS & HEREDITY","Score":null,"Total":0}

引用次数: 18

Abstract

Flag leaves, plant height (PH), and spike-related traits are key determinants contributing to yield potential in wheat. In this study, we developed a recombinant inbred line (RIL) population with 94 lines derived from the cross between 'AS985472' and 'Sumai 3.' A genetic map spanned 3553.69 cM in length were constructed using 1978 DArT markers. Severn traits including flag leaf width (FLW), flag leaf length (FLL), PH, anthesis date (AD), spike length (SL), spikelet number spike (SNS), and spike density (SD) were evaluated against this RIL population under three different environments. Combined phenotypic data and genetic map, we identified quantitative trait loci (QTL) for each trait. A total of four major and stably expressed QTLs for FLW, PH, and SD were detected on chromosomes 2D and 4B. Of them, the major QTLs individually explained 10.10 - 30.68% of the phenotypic variation. QTLs with pleiotropic effects were identified on chromosomes 4A and 6D as well. Furthermore, the genetic relationships between seven yield-related traits were detected and discussed. A few genes related to leaf growth and development at the interval of a major locus for FLW on chromosome 2D were predicated. Overall, the present study provided useful information for understanding the genetic basis of yield-related traits and will be useful for marker-assisted selection in wheat breeding.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

普通小麦7个产量相关性状的主要QTL。

旗叶、株高(PH)和穗相关性状是小麦产量潜力的关键决定因素。本研究利用‘AS985472’与‘苏麦3号’杂交的94个品系，构建了一个重组自交系(RIL)群体。利用1978个DArT标记构建了全长3553.69 cM的遗传图谱。在3种不同环境下对该RIL群体的旗叶宽度(FLW)、旗叶长度(FLL)、PH、花期(AD)、穗长(SL)、小穗数(SNS)和穗密度(SD)等性状进行了评价。结合表型数据和遗传图谱，我们确定了每个性状的数量性状位点(QTL)。在染色体2D和4B上共检测到FLW、PH和SD的4个主要且稳定表达的qtl。其中，主要qtl单独解释了表型变异的10.10 ~ 30.68%。在4A和6D染色体上也发现了具有多效性的qtl。此外，还检测并讨论了7个产量相关性状之间的遗传关系。在2D染色体上FLW主位点的间隔上预测了一些与叶片生长发育相关的基因。总的来说，本研究为了解产量相关性状的遗传基础提供了有用的信息，并将为小麦育种中的标记辅助选择提供有用的信息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Frontiers in Genetics Biochemistry, Genetics and Molecular Biology-Molecular Medicine

CiteScore

5.50

自引率

8.10%

发文量

3491

审稿时长

14 weeks

期刊介绍： Frontiers in Genetics publishes rigorously peer-reviewed research on genes and genomes relating to all the domains of life, from humans to plants to livestock and other model organisms. Led by an outstanding Editorial Board of the world’s leading experts, this multidisciplinary, open-access journal is at the forefront of communicating cutting-edge research to researchers, academics, clinicians, policy makers and the public. The study of inheritance and the impact of the genome on various biological processes is well documented. However, the majority of discoveries are still to come. A new era is seeing major developments in the function and variability of the genome, the use of genetic and genomic tools and the analysis of the genetic basis of various biological phenomena.