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| 水稻化感材料控制稗草的基因定位研究 | |
| 引用本文： | 徐正浩,何勇,崔绍荣,赵明,张旭,李迪.水稻化感材料控制稗草的基因定位研究[J].应用生态学报,2003,14(12):2258-2260. |
| 作者姓名： | 徐正浩 何勇 崔绍荣 赵明 张旭 李迪 |
| 作者单位： | 1. 浙江大学生物系统工程及食品科学学院,杭州,310029；中国水稻研究所,杭州310006；中国农业大学作物学院,北京,100094 2. 浙江大学生物系统工程及食品科学学院,杭州,310029 3. 中国农业大学作物学院,北京,100094 4. 中国水稻研究所,杭州310006 |
| 基金项目： | 国家自然科学基金项目 (3 0 170 62 0 )，国家“十五”科技攻关资助项目 (2 0 0 0 1BA5 0 9B0 7) |
| 摘 要： | 利用中156／谷梅2号建立的重组自交系(RILs)所构建的包括168个DNA标记，全长为1447．9cM。基本覆盖水稻基因组12条染色体的连锁图，用差时播种共培法的改进方法对134个该群体的株系及其亲本对无芒稗进行了化感作用评价，用无芒稗的植株干重作为表型定位水稻化感控制稗草的基因，用QTL Mapper 1．01b软件进行区间作图，检测到1个与化感作用有关的主效应QTL。该QTL位于第7条染色体上，解释了32．30％的表型变化；检测到6对上位QTL，解释了47．83％的无芒稗干重抑制的变化，主效应和上位效应QTL共解释了80．13％的表型变化。 |
| 关 键 词： | 水稻 差时播种共培法 化感作用 无芒稗 QTL |
| 文章编号： | 1001-9332(2003)12-2258-03 |
| 修稿时间： | 2003年7月19日 |
Genes mapping on rice allelopathy against barnyardgrass |
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| XU Zhenghao ,,HE Yong ,CUI Shaorong ,ZHAO Ming ,ZHANG Xu ,LI Di.Genes mapping on rice allelopathy against barnyardgrass[J].Chinese Journal of Applied Ecology,2003,14(12):2258-2260. | |
| Authors: | XU Zhenghao HE Yong CUI Shaorong ZHAO Ming ZHANG Xu LI Di |
| Institution: | College of Biosystem Engineering and Food Science, Zhejiang University, China National Rice Research Institute, Hangzhou, China. xzh640909@sohu.com |
| Abstract: | By using the relay seeding technique with slight modification, a population of 134 recombinant inbred lines (RILs) derived from a cross between indica rice (Oryza sativa L.) cultivar Zhong 156 x Gumei 2 and contained 168 DNA markers covering all 12 chromosomes with 1447.9 cM spans was employed to evaluate the rice allelopathic effect on barnyardgrass Echinochloa crus-galli (I.) Beauv.]. The phenotyping values of the biomass of barnyardgrass infested with rice materials were employed to map the genes of allelopathic activity on barnyardgrass. One main effect of QTL on 7 chromosomes was identified, which explained 32.30% of the phenotypic variation. Six pairs of digenic epistatic loci were also detected, which collectively explained 47.83% of the phenotypic variation. The main QTL and epistatic loci totally explained 80.13% of the phenotypic variation of allelopathic activity. |
| Keywords: | Rice Relay seeding technique Allelopathic effect Barnyardgrass Quantitative trait loci (QTL) |
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