Identification of eight QTL controlling multiple yield components in a German multi-parental wheat population, including Rht24, WAPO-A1, WAPO-B1 and genetic loci on chromosomes 5A and 6A.
Identification of eight QTL controlling multiple yield components in a German multi-parental wheat population, including Rht24, WAPO-A1, WAPO-B1 and genetic loci on chromosomes 5A and 6A.
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DOI：
10.1007/s00122-021-03781-7
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发表时间：
2021-05
期刊：
影响因子：
--
通讯作者：
Cockram J
中科院分区：
文献类型：
--
作者：
Corsi B;Obinu L;Zanella CM;Cutrupi S;Day R;Geyer M;Lillemo M;Lin M;Mazza L;Percival-Alwyn L;Stadlmeier M;Mohler V;Hartl L;Cockram J
对德国多创始群体的15个产量构成性状进行QTL定位，发现了8个QTL，每个QTL控制≥2种表型，包括Rht 24、WAPO-A1和WAPO-B1遗传位点。小麦（Triticum aestivum L.）是一种多基因性状，代表了许多发育过程及其与环境相互作用的顶点。为了保持产量潜力的遗传增益，通常采用“还原论方法”，通过这种方法建立了共同决定产量的产量构成因素的遗传控制。在这里，我们使用八个创始人德国多亲本小麦群体，以调查15个产量组成部分之间的遗传控制和表型权衡。穗粒数增加与每穗可育小穗数呈显著正相关，与每穗不育小穗数呈显著负相关。但由于每穗增粒数和可育小穗数与千粒重呈极显著负相关，库强限制明显。遗传作图在两个或两个以上的测试环境中确定了34个重复的数量性状基因座（QTL），其中24个被分解为8个基因座，每个基因座控制两个或两个以上的性状，这里称为“多性状QTL”（MT-QTL）。这些包括与先前克隆的控制半矮秆植株高度的基因相关的MT-QTL，以及与进一步调节植株高度的遗传位点降低高度24（Rht 24）相关的MT-QTL。此外，控制小穗数性状的MT-QTL定位在7A染色体上，包含WAPO-A1基因，其同源定位在7 B染色体上，包含WAPO-B1。在这项研究中确定的遗传位点，特别是那些可能控制多个产量组成部分，提供了未来的机会，有针对性地调查其潜在的基因，基因网络和表型权衡，以巩固进一步的遗传收益的产量。在线版本包含补充材料，可通过10.1007/s 00122 -021-03781-7获得。
Quantitative trait locus (QTL) mapping of 15 yield component traits in a German multi-founder population identified eight QTL each controlling ≥2 phenotypes, including the genetic loci Rht24, WAPO-A1 and WAPO-B1. Grain yield in wheat (Triticum aestivum L.) is a polygenic trait representing the culmination of many developmental processes and their interactions with the environment. Toward maintaining genetic gains in yield potential, ‘reductionist approaches’ are commonly undertaken by which the genetic control of yield components, that collectively determine yield, are established. Here we use an eight-founder German multi-parental wheat population to investigate the genetic control and phenotypic trade-offs between 15 yield components. Increased grains per ear was significantly positively correlated with the number of fertile spikelets per ear and negatively correlated with the number of infertile spikelets. However, as increased grain number and fertile spikelet number per ear were significantly negatively correlated with thousand grain weight, sink strength limitations were evident. Genetic mapping identified 34 replicated quantitative trait loci (QTL) at two or more test environments, of which 24 resolved into eight loci each controlling two or more traits—termed here ‘multi-trait QTL’ (MT-QTL). These included MT-QTL associated with previously cloned genes controlling semi-dwarf plant stature, and with the genetic locus Reduced height 24 (Rht24) that further modulates plant height. Additionally, MT-QTL controlling spikelet number traits were located to chromosome 7A encompassing the gene WHEAT ORTHOLOG OF APO1 (WAPO-A1), and to its homoeologous location on chromosome 7B containing WAPO-B1. The genetic loci identified in this study, particularly those that potentially control multiple yield components, provide future opportunities for the targeted investigation of their underlying genes, gene networks and phenotypic trade-offs, in order to underpin further genetic gains in yield. The online version contains supplementary material available at 10.1007/s00122-021-03781-7.
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影响因子：
5.6
作者：
Feng F;Han Y;Wang S;Yin S;Peng Z;Zhou M;Gao W;Wen X;Qin X;Siddique KHM
通讯作者：
Siddique KHM
一种还原主义的方法，用于剖析小麦的晶粒重量和产量。
影响因子：
11.4
作者：
Brinton J;Uauy C
通讯作者：
Uauy C
影响因子：
5.4
作者：
Cockram, James;Chiapparino, Elena;O'Sullivan, Donal M.
通讯作者：
O'Sullivan, Donal M.
影响因子：
5.4
作者：
Eriksen, L;Borum, F;Jahoor, A
通讯作者：
Jahoor, A
DOI：
10.1198/108571106x154443
发表时间：
2006-12-01
影响因子：
1.4
作者：
Cullis, B. R.;Smith, A. B.;Coombes, N. E.
通讯作者：
Coombes, N. E.