Molecular Mapping of QTLs for Yield and Yield-Related Traits in Oryza sativa cv Swarna × O. nivara (IRGC81848) Backcross Population

被引：0
作者：
B. P. MALLIKARJUNA SWAMY [1 ,2 ]
K. KALADHAR [1 ]
M. S. RAMESHA [1 ,2 ]
B. C. VIRAKTAMATH [1 ]
N. SARLA [1 ]
机构：
[1] Directorate of Rice Research, Rajendranagar, Hyderabad, India - 500030
[2] Plant Breeding, Genetics and Biotechnology Division, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
来源：
Rice Science | 2011年 / 18卷 / 03期
关键词：
Oryza sativa; Oryza nivara; stem diameter; rachis diameter; yield; yield components; quantitative trait locus;
D O I：
暂无
中图分类号：
S511 [稻];
学科分类号：
0901 ;
摘要：
Advanced backcross QTL analysis was used to identify QTLs for seven yield and yield-related traits in a BC2F2 population from the cross between a popular Oryza sativa cv Swarna and O. nivara IRGC81848. Transgressive segregants with more than 15% increased effect over Swarna were observed for all the traits except days to heading and days to 50% flowering. Thirty QTLs were detected for seven yield and yield-related traits using interval and composite interval mapping. Enhancing alleles at 13 (45%) of these QTLs were derived from O. nivara, and enhancing alleles at all the QTLs for stem diameter and rachis diameter were derived from O. nivara. Three stem diameter QTLs, two rachis diameter QTLs and one number of secondary branches QTL identified by both Interval and composite interval mapping contributed more than 15% of the total phenotypic variance. The QTL epistasis was significant for stem diameter and plot yield. The most significant QTLs qSD7.2, qSD8.1 and qSD9.1 for stem diameter, qRD9.1 for rachis diameter and qNSB1.1 for number of secondary branches are good targets to evaluate their use in marker-assisted selection. O. nivara is a good source of novel alleles for yield related traits and reveals major effect QTLs suitable for marker-assisted selection.
引用
收藏
页码：178 / 186
页数：9
相关论文
共 19 条
  • [1] Oryza nivara （Sharma et Shastry） the progenitor of O. sativa （L.） subspecies indica harbours rich genetic diversity as measured by SSR markers[J] . Current Science . 2006 (8)
  • [2] Fine mapping of a grain weight quantitative trait locus on rice chromosome 8 using near-isogenic lines derived from a cross between Oryza sativa and Oryza rufipogon
    Xie, Xiaobo
    Song, Mi-Hee
    Jin, Fengxue
    Ahn, Sang-Nag
    Suh, Jung-Pil
    Hwang, Hung-Goo
    McCouch, S. R.
    [J]. THEORETICAL AND APPLIED GENETICS, 2006, 113 (05) : 885 - 894
  • [3] Identification, isolation and pyramiding of quantitative trait loci for rice breeding[J] . Motoyuki Ashikari,Makoto Matsuoka.Trends in Plant Science . 2006 (7)
  • [4] Construction of introgression lines carrying wild rice （Oryza rufipogon Griff.） segments in cultivated rice （Oryza sativa L.） background and characterization of introgressed segments associated with yield-related traits[J] . Feng Tian,De Jun Li,Qiang Fu,Zuo Feng Zhu,Yong Cai Fu,Xiang Kun Wang,Chuan Qing Sun.Theoretical and Applied Genetics . 2006 (3)
  • [5] Genetic analysis of rice domestication syndrome with the wild annual species, Oryza?nivara[J] . ChangbaoLi,AilingZhou,TaoSang.New Phytologist . 2006 (1)
  • [6] Mapping quantitative trait loci for yield components and morphological traits in an advanced backcross population between Oryza grandiglumis and the O . sativa japonica cultivar Hwaseongbyeo[J] . D.-B. Yoon,K.-H. Kang,H.-J. Kim,H.-G. Ju,S.-J. Kwon,J.-P. Suh,O.-Y. Jeong,S.-N. Ahn.Theoretical and Applied Genetics . 2006 (6)
  • [7] Unused natural variation can lift yield barriers in plant breeding
    Gur, A
    Zamir, D
    [J]. PLOS BIOLOGY, 2004, 2 (10) : 1610 - 1615
  • [8] Identification of quantitative trait loci for yield and yield components in an advanced backcross population derived from the Oryza sativa variety IR64 and the wild relative O. rufipogon[J] . E. M. Septiningsih,J. Prasetiyono,E. Lubis,T. H. Tai,T. Tjubaryat,S. Moeljopawiro,S. R. McCouch.Theoretical and Applied Genetics . 2003 (8)
  • [9] Diversity in the Oryza genus
    Vaughan, DA
    Morishima, H
    Kadowaki, K
    [J]. CURRENT OPINION IN PLANT BIOLOGY, 2003, 6 (02) : 139 - 146
  • [10] ISSR and SSR markers based on AG and GA repeats delineate geographically diverse Oryza nivara accessions and reveal rare alleles
    Sarla, N
    Bobba, S
    Siddiq, EA
    [J]. CURRENT SCIENCE, 2003, 84 (05): : 683 - 690
12