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| 水稻主茎总叶数及其相关性状的QTL分析 | |
| 引用本文： | 钟代彬,罗利军,梅捍卫,王一平,余新桥,应存山,黎志康,郭龙彪.水稻主茎总叶数及其相关性状的QTL分析[J].中国水稻科学,2001,15(1):7-12. |
| 作者姓名： | 钟代彬 罗利军 梅捍卫 王一平 余新桥 应存山 黎志康 郭龙彪 |
| 作者单位： | 1. 中国水稻研究所,国际水稻研究所，菲律宾马尼拉933信箱 2. 中国水稻研究所, 3. 国际水稻研究所,菲律宾马尼拉933信箱;美国德克萨斯州农工大学土壤及作物科学系, 4. 中国水稻研究所 |
| 基金项目： | 国家自然科学基金重点项目；国家重点基础研究发展规划项目(973项目)；美国洛克菲勒基金资助项目。 |
| 摘 要： | 用一张具有182个RFLP标记的分子连锁图谱和一套重组自交系(RIL)群体，对水稻植株主茎总叶片数、叶片生长速率、抽穗期和株高等数量性状进行QTL区间作图研究，定位了影响水稻出叶速率的8个QTL，主茎总叶片数的2个QTL、抽穗期的3个QTL和株高的4个QTL。对这些QTL的遗传效应分析并结合先前用同组合材料研究结果，为进一步明确一些QTL的基因功能提供了有用的信息。如控制水稻主茎总叶片数的一个主效QTL，即QLn3，它同时影响分蘖期出叶速率、抽穗期及株高等数量性状。该位点来自特青的等位基因，其加性效应可使水稻在温室冬季短日条件下主茎总叶片数增加1.5叶左右，抽穗期延迟9 d，同时具有使分蘖期出叶速率降低0.2叶/10 d的效应。由于该QTL位点的基因不受光照长度的影响，说明它们有可能是由一个影响水稻基本营养生长期的基因控制或者这些基因紧密连锁；而另一个QTL（QHd8）位点的基因对主茎总叶数、抽穗期和株高的效应似乎受光照长度的影响较大。 |
| 关 键 词： | 重组自交系 出叶速率 主茎总叶数 基因定位 水稻 |
| 文章编号： | 1001-7216(2001)01-0007-06 |
| 收稿时间： | 1900-01-01; |
Mapping QTLs for Total Leaf Number of the Main Stem and Its Related Traits in Rice |
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| ZHONG Dai bin ,LUO Li jun ,MEI Han wei ,GUO Long biao ,WANG Yi ping ,YU Xin qiao ,YING Cun shan ,LI Zhi kang.Mapping QTLs for Total Leaf Number of the Main Stem and Its Related Traits in Rice[J].Chinese Journal of Rice Science,2001,15(1):7-12. | |
| Authors: | ZHONG Dai bin LUO Li jun MEI Han wei GUO Long biao WANG Yi ping YU Xin qiao YING Cun shan LI Zhi kang |
| Institution: | ZHONG Dai bin 1,2,LUO Li jun 1,MEI Han wei 1,GUO Long biao 1,WANG Yi ping 1,YU Xin qiao 1,YING Cun shan 1,LI Zhi kang 2,3 |
| Abstract: | Quantitative trait loci (QTLs) affecting total leaf number of the main stem,leafing rate at two different growth stages,heading date,and plant height in a recombinant inbred lines (RIL)population from the cross Lemont (japonica)×Teqing (indica) were investigated using a complete RFLP map with 182 marker loci.Eight QTLs for rate of leaf growth at two different stages,two QTLs for total leaf number of main stem,three QTLs for heading date,and four QTLs for plant height were mapped.Combined with previous studies on this cross,these results provided useful information on the nature of some detected QTLs.For example,QLn3,a main-effect QTL from Teqing that give 1.5 leaf more of total leaf number,9 days delayed heading,and 0.2 leaf increase each ten days during tillering stage in greenhouse condition was identified on chromosome 3 near the marker RG348.This QTL appeared to affect the basic vegetative period of rice plants since it was not affected by the daylength.On the other hand,QHd8 which affects heading date,plant height,and total leaf number of main stem appeared to be influenced by daylength. |
| Keywords: | recombinant inbred line leafing rate total leaf number gene location rice |
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