QTL mapping of domestication-related traits in soybean (Glycine max).
QTL mapping of domestication-related traits in soybean (Glycine max).
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大豆（Glycine Max）中与驯化相关性状的QTL映射。
DOI：
10.1093/aob/mcm149
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发表时间：
2007-11
期刊：
影响因子：
4.2
通讯作者：
Abe J
中科院分区：
文献类型：
--
作者：
Liu B;Fujita T;Yan ZH;Sakamoto S;Xu D;Abe J
了解驯化相关性状（DRTs）的遗传基础对于有效利用野生种质资源提高作物产量、抗逆性和品质具有重要意义。本研究利用数量性状位点（QTL）定位技术对大豆（Glycine max） DRTs的遗传基础进行了研究。从一种栽培的大豆中分离出96个重组自交系。* * * * * * * * *利用大豆杂交进行定位和QTL分析。2004年和2005年审查了9个drt。利用Kosambi函数构建282个标记的连锁图谱，利用复合区间作图检测QTL。来自最大亲本的早花和决定习性各受1个主QTL控制，分别对应成熟主基因e1和决定习性主基因dt1。在结对习性、荚果开裂、种子重和硬粒性方面，只有1 ~ 2个显著qtl，各占约1 ~ 2个。总方差的20 - 50%。与先前检测到的QTL比较表明，在荚果开裂和硬粒性方面，不同杂交至少有一个主要的QTL是共同的，而在种子重方面则没有一致的QTL。大多数大豆drt由一个或两个主要qtl和一些基因型依赖的次要qtl调控。在豆荚开裂和硬粒性中发现的主要qtl可能是大豆驯化的关键位点。向着更大种子的进化变化可能是通过许多qtl的微小变化的积累而发生的。由于drt的主要qtl仅分散在20个连锁群中的6个，并且由于qtl没有聚集，因此从野生大豆到栽培大豆的有用基因的渗入可以没有太大的障碍。
Understanding the genetic basis underlying domestication-related traits (DRTs) is important in order to use wild germplasm efficiently for improving yield, stress tolerance and quality of crops. This study was conducted to characterize the genetic basis of DRTs in soybean (Glycine max) using quantitative trait locus (QTL) mapping. A population of 96 recombinant inbred lines derived from a cultivated (ssp. max) × wild (ssp. soja) cross was used for mapping and QTL analysis. Nine DRTs were examined in 2004 and 2005. A linkage map was constructed with 282 markers by the Kosambi function, and the QTL was detected by composite interval mapping. The early flowering and determinate habit derived from the max parent were each controlled by one major QTL, corresponding to the major genes for maturity (e1) and determinate habit (dt1), respectively. There were only one or two significant QTLs for twinning habit, pod dehiscence, seed weight and hard seededness, which each accounted for approx. 20–50 % of the total variance. A comparison with the QTLs detected previously indicated that in pod dehiscence and hard seededness, at least one major QTL was common across different crosses, whereas no such consistent QTL existed for seed weight. Most of the DRTs in soybeans were conditioned by one or two major QTLs and a number of genotype-dependent minor QTLs. The common major QTLs identified in pod dehiscence and hard seededness may have been key loci in the domestication of soybean. The evolutionary changes toward larger seed may have occurred through the accumulation of minor changes at many QTLs. Since the major QTLs for DRTs were scattered across only six of the 20 linkage groups, and since the QTLs were not clustered, introgression of useful genes from wild to cultivated soybeans can be carried out without large obstacles.
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影响因子：
5.4
作者：
Cai, HW;Morishima, H
通讯作者：
Morishima, H
影响因子：
5.4
作者：
KEIM, P;DIERS, BW;SHOEMAKER, RC
通讯作者：
SHOEMAKER, RC
影响因子：
5.4
作者：
Concibido, VC;La Vallee, B;Delannay, X
通讯作者：
Delannay, X
DOI：
10.1073/pnas.87.24.9888
发表时间：
1990-12-01
影响因子：
11.1
作者：
DOEBLEY, J;STEC, A;EDWARDS, M
通讯作者：
EDWARDS, M
影响因子：
2.6
作者：
Abe, J;Hasegawa, A;Shimamoto, Y
通讯作者：
Shimamoto, Y