Fine mapping of qHd1, a minor heading date QTL with pleiotropism for yield traits in rice (Oryza sativa L.).
Fine mapping of qHd1, a minor heading date QTL with pleiotropism for yield traits in rice (Oryza sativa L.).
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qHd1 的精细定位，qHd1 是水稻 (Oryza sativa L.) 产量性状具有多效性的小抽穗日期 QTL。
DOI：
10.1007/s00122-014-2395-7
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发表时间：
2014-11
影响因子：
5.4
通讯作者：
Zhuang, Jie-Yun
中科院分区：
文献类型：
--
作者：
Chen, Jun-Yu;Guo, Liang;Ma, Huan;Chen, Yu-Yu;Zhang, Hong-Wei;Ying, Jie-Zheng;Zhuang, Jie-Yun
利用具有连续分离区的近等基因系将位于水稻第1染色体长臂上的抽穗期微效QTL定位在95.0kb的区域内。 抽穗期和产量是决定水稻品种商业潜力的两个关键因素。本研究利用连续分离区域构建水稻群体，并利用该群体定位抽穗期的一个微效QTL qHd 1。从珍汕97（汕97）//汕97//密阳46的BC 2F 3单株出发，共获得BC 2F 6-BC 2F 11的6个高世代18个群体。QTL被界定为一个95.0 kb的区域两侧RM 12102和RM 12108在1号染色体长臂的末端区域。结果还表明，qHd 1是不参与光周期反应，具有加性效应的范围从2.4到2.9天观察近等基因系生长在稻田和控制条件下的短日或长日。该QTL对产量性状具有多效性效应，其中，等位基因F1997可延迟抽穗，增加每穗颖花数、每穗实粒数和单株产量。候选区域包含10个注释基因，其中2个基因具有控制抽穗期的功能信息。这些结果为qHd 1的克隆奠定了基础。此外，这类微效QTL对水稻抽穗期和产量性状的微效调控具有重要的育种意义。本文的在线版本（doi：10.1007/s 00122 -014-2395-7）包含补充材料，可供授权用户使用。
A minor QTL for heading date located on the long arm of rice chromosome 1 was delimitated to a 95.0-kb region using near isogenic lines with sequential segregating regions. Heading date and grain yield are two key factors determining the commercial potential of a rice variety. In this study, rice populations with sequential segregating regions were developed and used for mapping a minor QTL for heading date, qHd1. A total of 18 populations in six advanced generations through BC2F6 to BC2F11 were derived from a single BC2F3 plant of the indica rice cross Zhenshan 97 (ZS97)///ZS97//ZS97/Milyang 46. The QTL was delimitated to a 95.0-kb region flanked by RM12102 and RM12108 in the terminal region of the long arm of chromosome 1. Results also showed that qHd1 was not involved in the photoperiodic response, having an additive effect ranging from 2.4 d to 2.9 d observed in near isogenic lines grown in the paddy field and under the controlled conditions of either short day or long day. The QTL had pleiotropic effects on yield traits, with the ZS97 allele delaying heading and increasing the number of spikelets per panicle, the number of grains per panicle and grain yield per plant. The candidate region contains ten annotated genes including two genes with functional information related to the control of heading date. These results lay a foundation for the cloning of qHd1. In addition, this kind of minor QTLs could be of great significance in rice breeding for allowing minor adjustment of heading date and yield traits. The online version of this article (doi:10.1007/s00122-014-2395-7) contains supplementary material, which is available to authorized users.
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影响因子：
14.9
作者：
Monaco MK;Stein J;Naithani S;Wei S;Dharmawardhana P;Kumari S;Amarasinghe V;Youens-Clark K;Thomason J;Preece J;Pasternak S;Olson A;Jiao Y;Lu Z;Bolser D;Kerhornou A;Staines D;Walts B;Wu G;D'Eustachio P;Haw R;Croft D;Kersey PJ;Stein L;Jaiswal P;Ware D
通讯作者：
Ware D
影响因子：
4.8
作者：
Guo Liang;Zhang Zhen-hua;Zhuang Jie-yun
通讯作者：
Zhuang Jie-yun
影响因子：
5.1
作者：
Huang, Yi;Zhang, Lida;Zhang, Qifa
通讯作者：
Zhang, Qifa
影响因子：
5.4
作者：
Chen, X;Temnykh, S;McCouch, SR
通讯作者：
McCouch, SR
影响因子：
7.4
作者：
Kim, Song Lim;Lee, Shinyoung;An, Gynheung
通讯作者：
An, Gynheung