水稻种质资源的化感潜力评价方法

 通过土培、砂培、特征性次生物质标记和田间试验方法对 2 2 5份中国水稻种质资源进行了评价 ,并对各种评价方法进行了分析比较。结果表明 ,4种评价方法的检测结果有一定的相关性 ,土培、砂培和特征性次生物质标记法均检测出有化感潜力的水稻品种 ,在田间条件下也表现抑草效应。尤其是特征性次生物质标记法确定的化感指数的大小基本上与田间抑草效应一致。而且特征性次生物质标记法能在未损害水稻生长发育的条件下对大批量水稻品种及单株的化感潜力进行定性和定量评价 ,是一种精确有效的水稻种质资源化感潜力评价方法。

Evaluation Methods for Allelopathic Potentials of Rice Germplasms

Chinese rice germplasms were evaluated by soil culture, sand culture, specific secondary metabolite marker and field trials. The results demonstrated that determined the data were correlated with each other among the four evaluation methods. Rice germplsams with allelopathic potential determined by soil culture, sand culture and specific secondary metabolite marker together expressed their inhibitory effects on weeds in the field, particularly the allelopathic index values evaluated by specific secondary metabolite marker were in accordance with inhibitory effects on weeds in the field. Furthermore, allelopathic potentials of a large number of rice germplasms and their individuals may be evaluated by specific secondary metabolite marker in a non-destructive manner which had qualitative and quantitative analyses. So, specific secondary metabolite marker is a precise and effective method for evaluating rice germplasms with allelopathic potential.