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园艺学报 ›› 2011, Vol. 38 ›› Issue (7): 1283-1290.

• 蔬菜 • 上一篇    下一篇

控制白菜3–丁烯基硫代葡萄糖苷积累的QTL定位及分析

王 辉,孙日飞,邓 杰,武 剑,王晓武*   

  1. (中国农业科学院蔬菜花卉研究所,北京 100081)
  • 收稿日期:2011-03-27 修回日期:2011-05-26 出版日期:2011-07-25 发布日期:2011-07-25
  • 通讯作者: 王晓武*

QTL Analysis for Gluconapin Accumulation in Leaves of Brassica campestris L.

QTL Analysis for Gluconapin Accumulation in Leaves of Brassica campestris L. WANG Hui,SUN Ri-fei,DENG Jie,WU Jian,and WANG Xiao-wu*   

  1. (Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China)
  • Received:2011-03-27 Revised:2011-05-26 Online:2011-07-25 Published:2011-07-25
  • Contact: WANG Xiao-wu*

摘要: 利用黄籽沙逊油菜L143和大白菜Z16杂交,再用Z16回交2代,然后进行小孢子培养构建了包含120个BC2DH株系的分离群体。应用135个InDel标记构建了包含10连锁群覆盖全基因组总长度为559.08 cM的遗传图谱。利用HPLC法对不同年份中亲本及BC2DH群体株系叶片中不同结构硫苷的测定,发现亲本间3–丁烯基硫苷积累差异极显著,结合MapQTL4软件与MQM作图法分析,共发现了两个控制3–丁烯基硫苷积累的主效QTL位点NAP-QTL-A03和NAP-QTL-A09,其中NAP-QTL-A03能解释51.0%(2007年秋)和64.2%(2009年春)的变异,两个QTL累计贡献率分别为67.90%(2007年秋)和73.10%(2009年春)。结合白菜基因组进一步分析认为NAP-QTL-A03为控制烯烃基硫苷生物合成的关键位点AOP,且可能的候选基因为BrAOP2,而NAP-QTL-A09位点附近存在另一个调控硫苷生物合成候选转录因子MYB28。

关键词: 白菜, BC2DH群体, 硫代葡萄糖苷, InDel标记, 遗传图谱, 数量性状位点

Abstract: A permanent population BC2DH including 120 lines derived from a cross between Yellow Sarson L143 and Chinese cabbage Z16 was constructed. An integrated map of 559.08 cM with 10 linkage groups is developed based on the BC2DH population with 135 InDel(Insertion-deletion)markers. Gluconapin was detected in parents and individual of population with HPLC and consecutive distribution was observed in BC2DH population. QTL analysis identified two QTLs(NAP-QTL-A03 and NAP-QTL-A09)controlling accumulation of gluconapin in the two different seasons. NAP-QTL-A03 was mapped on A03, which explained 51.0% and 64.2% of the phenotypic variation respectively in the two seasons. And the two QTL totally explain 67.90% and 73.10% phenotypic variation respectively. On the basis of Brassica rapa genome project, we discovered NAP-QTL-A03 was AOP locus which included a key gene BrAOP2 for alkylene glucosinolate biosynthesis,while NAP-QTL-A09 maybe another candidate gene MYB28

Key words: Brassica campestris L., BC2DH population, glucosinolate, InDel marker, linkage map, QTL

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