Identification of heterotic loci associated with grain yield and its components using two CSSL test populations in maize.
Identification of heterotic loci associated with grain yield and its components using two CSSL test populations in maize.
复制标题
使用玉米中两个 CSSL 测试群体鉴定与谷物产量及其组成相关的杂种优势位点
DOI：
10.1038/srep38205
复制
发表时间：
2016-12-05
影响因子：
4.6
通讯作者：
Kang D
中科院分区：
文献类型：
--
作者：
Wang H;Zhang X;Yang H;Liu X;Li H;Yuan L;Li W;Fu Z;Tang J;Kang D
杂种优势已被广泛应用于提高粮食产量和品质。本研究以184个染色体片段置换系(CSSL)和两个自交系(郑58和寻9058)为材料，在两个试验群体的两个地点连续两年研究了玉米产量及其主要构成因素的杂种优势的遗传基础。在CSSL×郑58和CSSL×Xun9058两个供试群体中，共检测到169个与产量及其5个构成因素相关的杂种优势基因座，仅在两个群体中检测到25个HL。对两个供试群体中检测到的数量性状基因座(QTL)进行比较，结果表明，两个群体中分别只有15.46%和17.35%的HL与相应的QTL具有相同的染色体区域，表现出显性效应和加性效应和显性效应的多效性。此外，大多数HL(74.23%和74.49%)具有超显性效应。这些结果表明，超显性是玉米杂种优势对籽粒产量及其构成因素影响的主要因素，不同性状在不同杂交种中表现出不同的杂种优势。
Heterosis has widely been used to increase grain yield and quality. In this study, the genetic basis of heterosis on grain yield and its main components in maize were examined over 2 years in two locations in two test populations constructed from a set of 184 chromosome segment substitution lines (CSSLs) and two inbred lines (Zheng58 and Xun9058). Of the 169 heterotic loci (HL) associated with grain yield and its five components identified in CSSL× Zheng58 and CSSL× Xun9058 test populations, only 25 HL were detected in both populations. The comparison of quantitative trait loci (QTLs) detected in the CSSL population with HL detected in the two test populations revealed that only 15.46% and 17.35% of the HL in the given populations respectively, shared the same chromosomal regions as that of the corresponding QTLs and showed dominant effects as well as pleiotropism with additive and dominant effects. In addition, most of the HL (74.23% and 74.49%) had overdominant effects. These results suggest that overdominance is the main contributor to the effects of heterosis on grain yield and its components in maize, and different HL are associated with heterosis for different traits in different hybrids.
登录
查看更多内容
影响因子：
6.9
作者：
Guo M;Rupe MA;Wei J;Winkler C;Goncalves-Butruille M;Weers BP;Cerwick SF;Dieter JA;Duncan KE;Howard RJ;Hou Z;Löffler CM;Cooper M;Simmons CR
通讯作者：
Simmons CR
DOI：
10.1073/pnas.132259199
发表时间：
2002-07-09
影响因子：
11.1
作者：
Fu, HH;Dooner, HK
通讯作者：
Dooner, HK
玉米种子萌发过程杂种优势的 MicroRNA 转录组分析
影响因子：
3.7
作者：
Ding D;Wang Y;Han M;Fu Z;Li W;Liu Z;Hu Y;Tang J
通讯作者：
Tang J
影响因子：
3.3
作者：
Kusterer, Barbara;Piepho, Hans-Peter;Melchinger, Albrecht E.
通讯作者：
Melchinger, Albrecht E.
影响因子：
3.3
作者：
Hoecker, Nadine;Keller, Barbara;Hochholdinger, Frank
通讯作者：
Hochholdinger, Frank