植物学报 ›› 2010, Vol. 45 ›› Issue (06): 662-669.doi: 10.3969/j.issn.1674-3466.2010.06.003

• 研究报告 • 上一篇    下一篇

基于单片段代换系的水稻穗长QTL加性及其上位性效应

任德勇, 何光华, 凌英华, 桑贤春, 杨正林, 赵芳明*   

  1. 西南大学水稻研究所, 农业部西南作物遗传改良与育种重点开放实验室, 重庆 400715
  • 收稿日期:2009-11-30 修回日期:2010-04-13 出版日期:2010-11-01 发布日期:2010-09-20
  • 通讯作者: 赵芳明 E-mail:zhaofangming2004@163.com

Analysis of Quantitative Trait Loci Additive and Epistasis Effects for Panicle Length with Single Segment Substitution Lines in Rice

Deyong Ren, Guanghua He, Yinghua Ling, Xianchun Sang, Zhenglin Yang, Fangming Zhao*   

  1. Key Laboratory of Biotechnology and Crop Quality Improvement, Ministry of Agriculture, Rice Research Institute, Southwest University, Chongqing 400715, China
  • Received:2009-11-30 Revised:2010-04-13 Online:2010-11-01 Published:2010-09-20
  • Contact: Fangming Zhao E-mail:zhaofangming2004@163.com

摘要: 穗长是影响水稻(Oryza sativa)产量的重要因子之一, 研究水稻穗长QTL间的上位性效应对于发掘水稻产量潜力具有重要意义。该研究以16个单片段代换系(single segment substitution lines, SSSLs)和15个双片段聚合系(double segment pyramiding lines, DSPLs)为材料研究了水稻穗长QTL的加性及上位性效应。以P<0.01为阈值, 共检测到6个穗长QTL和9对基因互作座位。其中2个(Pl-2Pl-10)是尚未报道的穗长QTL。穗长QTL互作后, 一些互作对的上位性效应与单个QTL的作用方式及效应大小各不相同, 预示着基因聚合后会产生不同的互作效应。该研究结果对于通过分子聚合育种手段改良穗长具有重要意义。

Abstract: Panicle length is one of the important factors influencing rice yield. In rice breeding, study of quantitative trait loci (QTL) of panicle length and their epistasis effects in rice is important. In this study, we used 16 secondary single segment substitution lines and 15 double segment pyramiding lines with a Huajingxian 74 background as mapping populations to study QTL for panicle length and their gene interactions. We detected 6 QTLs for panicle length, of which 2 (Pl-2 and Pl-10) were previously unreported. Furthermore, after interactions, some loci pairs had different effect strength and opposite direction of each locus, which indicated that the gene pyramiding may result in various interaction patterns. These results are important for improving rice panicle length with molecular marker-assisted breeding.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 关萍 石建明 李淑久. 绞股兰下胚轴愈伤组织发生与器官再生的组织学观察[J]. 植物学报, 1994, 11(专辑): 19 .
[2] 肖啸 程振起. 叶绿体4.5 SrRNA II. 基因与起源[J]. 植物学报, 1985, 3(06): 7 -9 .
[3] 曹翠玲李生秀. 供氮水平对小麦生殖生长时期叶片光合速率、NR活性和核酸含量及产量的影响[J]. 植物学报, 2003, 20(03): 319 -324 .
[4] 宋莉英 谭诤 高峰 邓暑燕. 我国葫芦科植物离体培养研究进展[J]. 植物学报, 2004, 21(03): 360 -366 .
[5] 石建明 桂耀林 朱至清. 甜菜叶柄脱分化过程中无丝分裂现象的观察[J]. 植物学报, 1989, 6(03): 155 .
[6] 柯曼琴 张慧 秦月秋. PP333对曲阜香稻茎秆解剖结构的影响初报[J]. 植物学报, 1994, 11(专辑): 76 .
[7] 李俊德 杨健 王宇飞. 山东山旺中新世的水生植物[J]. 植物学报, 2000, 17(专辑): 261 .
[8] 徐景先 王宇飞 杨健 普光荣 张翠芬. 云南第三纪植物群及其古气候的研究进展[J]. 植物学报, 2000, 17(专辑): 84 -94 .
[9] 孙震晓 夏光敏 陈惠民. 新麦草的核型分析[J]. 植物学报, 1995, 12(01): 56 .
[10] 王立军 谷安根 张友民 贾伟平. 南瓜幼苗初生维管系统的解剖学研究[J]. 植物学报, 1994, 11(专辑): 8 -9 .