【摘要】 [目的]为银杏叶用品种选择在产量和质量水平上提出初步标准。[方法]采用31个银杏雌性品种(品系)和4个雄株类型的单株无性系,随机区组排列,研究叶产量性状及其与叶产量的相关性,叶黄酮、内酯含量。[结果]各品种间在平均叶厚、叶面积、单叶鲜重、叶黄酮和内酯含量在0.05水平上均存在显著差异。较好品种的叶面积、叶重、叶黄酮、内酯含量分别是较弱品种的2.04、2.47、2.45、2.01倍;雌雄株间叶产量性状、黄酮、内酯含量无差异,证明银杏品种(品系)或类型间叶产量性状、黄酮、内酯含量均存在遗传变异,这种变异与雌雄株无关。在银杏雌雄群体内选择是有效的。[结论]初步提出了叶用银杏品种选择的项目和标准,并筛选出了安陆1号等优良叶用品种;将选择的优良品种或变异在生产上加以推广利用,具有重要意义。更多还原

【Abstract】 [Objective] The research aimed to put forward a preliminary standard for selecting leaf-used variety of Ginkgo biloba L at the levels of yield and quality.[Method] With randomized block arrangement,31 female varieties(strains) of G.biloba and 4 male types of single plant clone were used to study the leaf-yield traits and its relativity with leaf yield,leaf flavone and lactone contents.[Result] The average leaf-thickness,leaf area,fresh weight of single leaf,leaf flavone and lactone contents existed significant difference among all varieties.The leaf area,leaf weight,leaf flavone and lactone contents of better varieties were 2.04,2.71,2.07 and 2.20 times as that of weaker varieties respectively.Leaf-yield traits,flavone and lactone contents had no difference between female plants and male plants,which proved leafyield traits,flavone and lactone contents existed genetic variation among G.biloba varieties(strains) or types and this kind of variation was irrelevant with male or female plants.The selection was effective in female and male populations of G.biloba.[Conclusion] The project and standard for selecting leaf-used variety of G.biloba were put forward first and fine leaf-used varieties such as Anlu No.1 were screened.Popularizing and utilizing the fine varieties and aberrances that had selected in the production had an important significance.更多还原