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董贞荣, 陈进明, 王青锋. 泽苔草交配系统的RAPD分析[J]. 植物科学学报, 2006, 24(2): 167-170.
引用本文: 董贞荣, 陈进明, 王青锋. 泽苔草交配系统的RAPD分析[J]. 植物科学学报, 2006, 24(2): 167-170.
DONG Zhen-Rong, CHEN Jin-Ming, WANG Qing-Feng. RAPD Analysis for Mating System in Caldesia parnassifolia[J]. Plant Science Journal, 2006, 24(2): 167-170.
Citation: DONG Zhen-Rong, CHEN Jin-Ming, WANG Qing-Feng. RAPD Analysis for Mating System in Caldesia parnassifolia[J]. Plant Science Journal, 2006, 24(2): 167-170.

泽苔草交配系统的RAPD分析

RAPD Analysis for Mating System in Caldesia parnassifolia

  • 摘要: 利用RAPD显性标记位点对泽苔草(Caldesia parnassifolia)湖南茶陵湖里居群进行了交配系统研究。采用10个家系共240个子代样品测定了该居群花粉库基因频率、固定指数(F)、多位点异交率(tm)和单位点异交率(ts)。结果显示该居群异交率处于较高的水平(tm=1.008),多位点异交率与单位点异交率差异不显著(tm-ts=-0.021),固定指数(F)的估计值小于0(F=-0.200),表明该居群双亲近交不明显,而以异交为主。这可能是受居群密度、传粉者的活动能力等因素影响的结果。

     

    Abstract: Outcrossing rate in an open-pollinated breeding population(Huli population,Chaling,Hunan Province) of Caldesia parnassifolia was estimated by the dominant RAPD makers using 10 open-pollinated progeny arrays of 24 individuals.The multilocus outcrossing rate(tm) was 1.008 and the single-locus outcrossing rate(ts) was 1.028.The multilocus outcrossing rate did not significantly differ from the single-locus outcrossing rate(tm-ts =-0.021).The fixation index(F) was-0.200.The estimates of (tm),(ts) and F utilizing windows version of MLTR program clearly indicate that outcrossing is predominant in the C.parnassifolia open-pollinated breeding population.This is possibly influenced by factors such as plant density,the adaptability of pollinator and so on.

     

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