Exploitation of heterosis loci for yield and yield components in rice using chromosome segment substitution lines.
Exploitation of heterosis loci for yield and yield components in rice using chromosome segment substitution lines.
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使用染色体片段替换系开发水稻产量和产量组成部分的杂种优势位点
DOI：
10.1038/srep36802
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发表时间：
2016-11-11
影响因子：
4.6
通讯作者：
Liang G
中科院分区：
文献类型：
--
作者：
Tao Y;Zhu J;Xu J;Wang L;Gu H;Zhou R;Yang Z;Zhou Y;Liang G
本研究利用籼稻与水稻杂交，构建了128个染色体片段代换系（CSSLs）。9311和日本晴杂种优势的遗传机制。选用光温敏核不育系广占63 -4s、036 s和连99 s与三个CSSL杂交，配制测交群体。在2009年、2011年和2015年进行了田间试验，以评估CSSL和TC中的产量和产量相关性状。4个性状（株高、每穗颖花数、千粒重和单株产量）在CSSLs和TCs之间存在显著相关。在显性遗传中，株高、穗长、结实率、千粒重和单株产量表现为部分显性，表明显性对这5个性状的杂种优势贡献较大。而超显性对单株穗数和每穗颖花数的杂种优势可能更为重要。根据CSSLs和TC的分箱图，利用多元线性回归分析检测到62个数量性状位点和97个杂种优势位点。有些位点聚在一起。对水稻产量及产量相关性状的QTL和HLs的定位，为杂交水稻育种提供了有用的信息，有助于揭示水稻杂种优势的遗传基础。
We constructed 128 chromosome segment substitution lines (CSSLs), derived from a cross betweenindicarice (Oryza sativaL.) 9311 andjaponicarice Nipponbare, to investigate the genetic mechanism of heterosis. Three photo-thermo-sensitive-genic male sterile lines (Guangzhan63-4s, 036s, and Lian99s) were selected to cross with each CSSL to produce testcross populations (TCs). Field experiments were carried out in 2009, 2011, and 2015 to evaluate yield and yield-related traits in the CSSLs and TCs. Four traits (plant height, spikelet per panicle, thousand-grain weight, and grain yield per plant) were significantly related between CSSLs and TCs. In the TCs, plant height, panicle length, seed setting rate, thousand-grain weight, and grain yield per plant showed partial dominance, indicating that dominance largely contributes to heterosis of these five traits. While overdominance may be more important for heterosis of panicles per plant and spikelet per panicle. Based on the bin-maps of CSSLs and TCs, we detected 62 quantitative trait loci (QTLs) and 97 heterotic loci (HLs) using multiple linear regression analyses. Some of these loci were clustered together. The identification of QTLs and HLs for yield and yield-related traits provide useful information for hybrid rice breeding, and help to uncover the genetic basis of rice heterosis.
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影响因子：
3.3
作者：
Ferreira, V. C.;Rosa, G. J. M.;Thomas, D. L.
通讯作者：
Thomas, D. L.
DOI：
10.1073/pnas.132266399
发表时间：
2002-06-25
影响因子：
11.1
作者：
Spielmeyer, W;Ellis, MH;Chandler, PM
通讯作者：
Chandler, PM
影响因子：
64.8
作者：
Huang, Xuehui;Yang, Shihua;Han, Bin
通讯作者：
Han, Bin
影响因子：
1.5
作者：
MINVIELLE, F
通讯作者：
MINVIELLE, F
影响因子：
5.4
作者：
Wang, Zhiquan;Yu, Chuanyuan;Wan, Jianmin
通讯作者：
Wan, Jianmin