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| 用RFLP标记剖析水稻穗颈维管束及穗部性状的遗传基础 | |
| 引用本文： | 陈顺强,汪洋,章志宏,王玲霞,胡中立,李平,朱立煌,朱英国.用RFLP标记剖析水稻穗颈维管束及穗部性状的遗传基础[J].武汉植物学研究,2004,22(1):15-21. |
| 作者姓名： | 陈顺强 汪洋 章志宏 王玲霞 胡中立 李平 朱立煌 朱英国 |
| 作者单位： | 1. 武汉大学植物发育生物学教育部重点实验室,武汉大学生命科学学院,武汉,430072 2. 四川农业大学水稻研究所,四川温江,611130 3. 中国科学院遗传与发育生物学研究所,北京,100101 |
| 基金项目： | 国家863计划(2003AA207160)，国家自然科学基金资助项目(30270760)，湖北省自然科学基金资助项目(2002AB0090)，武汉大学发育生物学基金资助项目。 |
| 摘 要： | 采用籼、粳亚种间杂种F1(圭630×02428)花药培养获得的DH群体,对水稻穗颈大、小维管束数和倒数第2节间大、小维管束数等4个维管束性状,以及一、二次枝梗数,每穗颖花数3个穗部性状进行QTL分析,共检测到16个QTLs,其中有7个QTLs的加性效应较大,单个QTL的贡献率在20%以上。发现有4个QTLs成簇分布于第1染色体从RZ776到C11的大约35cM的区段上,来源于亲本"圭630"的这一染色体区段对穗颈大维管束、第2节间大维管束、第2节间小维管束和二次枝梗数4个性状的表达均具有增效作用。还讨论了利用分子标记辅助选择聚合增效QTLs、实现穗颈维管束性状遗传改良的策略。 |
| 关 键 词： | 水稻 DH群体 穗颈维管束 RFLP 数量性状基因座位（QTL） |
| 文章编号： | 1000-470X(2004)01-0015-07 |
Genetic Dissection of Vascular Bundle Systems in Peduncle and Panicle Characters in Rice (Oryza sativa L.) by Means of RFLP Markers |
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| CHEN Shun-Qiang,WANG Yang,ZHANG Zhi-Hong,WANG Ling-Xia,HU Zhong-Li,LI Ping,ZHU Li-Huang,ZHU Ying-Guo Biology,College of Life Sciences,Wuhan University,Wuhan ,China , .Rice Research Institute,Sichuan Agricultural University,Chengdu ,China.Genetic Dissection of Vascular Bundle Systems in Peduncle and Panicle Characters in Rice (Oryza sativa L.) by Means of RFLP Markers[J].Journal of Wuhan Botanical Research,2004,22(1):15-21. | |
| Authors: | CHEN Shun-Qiang WANG Yang ZHANG Zhi-Hong WANG Ling-Xia HU Zhong-Li LI Ping ZHU Li-Huang ZHU Ying-Guo Biology College of Life Sciences Wuhan University Wuhan China Rice Research Institute Sichuan Agricultural University Chengdu China |
| Institution: | CHEN Shun-Qiang~1,WANG Yang~1,ZHANG Zhi-Hong~1,WANG Ling-Xia~2,HU Zhong-Li~1,LI Ping~2,ZHU Li-Huang~3,ZHU Ying-Guo~1 Biology,College of Life Sciences,Wuhan University,Wuhan 430072,China , 2.Rice Research Institute,Sichuan Agricultural University,Chengdu 611130,China , 3.Institute of Genetics and Developmental Biology,The Chinese Academy of Sciences,Beijing 100101,China) |
| Abstract: | A doubled-haploid rice population,consisting of 81 DH lines derived from the F_1 hybrid of a cross between indica cultivar and japonica cultivar,was used to map quantitative trait loci(QTL) controlling numbers of vascular bundles in the peduncle and the top second internode,primary and secondary rachis branches,and spikelets per panicle.A total of 16 QTLs were detected.Among them,7 QTLs with larger effects each explained more than 20% of the total variation for the traits concerned.A cluster of 4 QTLs for the traits studied was located to the genomic region of about 35 cM in length flanked by the marker RZ776 and C11 on chromosome 1.This chromosome region from the parent 'Gui630' contributed to the increasing phenotypic values of the 4 traits,viz.numbers of large vascular bundles in peduncle and top second internode,small vascular bundles in top second internode,and secondary rachis branches.The present paper also discussed the strategy for improving of vascular bundle system in peduncle via pyramiding favorable QTLs for the traits concerned using marker-assisted selection. |
| Keywords: | Rice ( Oryza sativa L ) Doubled-haploid population Vascular bundles in peduncle RFLP Quantitative trait loci (QTL) |
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