不同种群中海南粗榧(Cephalotaxus mannii)形态变异研究  

Study on the morphological variations of Cephalotaxus mannii in different populations

作　　者：向志强[1] 付永川[1] 刘玉成[1] 杜道林[2] 

机构地区：[1]西南师范大学生命科学系 [2]海南师范学院生物系

出　　处：《广西植物》1999年第2期131-135,共5页Guihaia

基　　金：国家自然科学基金

摘　　要：通过变异系数和性状差异显著性检验，研究了海南粗榧在坝王岭等５个种群内和种群间不同形态变异以及形态总体变异。结果表明：①海南粗榧营养器官性状比生殖器官性状变异大；枝性状组中，分枝角度变异较小；叶性状组中，叶数量变异较大；球果、种子生物量变异都大于它们的其它性状。②在５个种群内，同一性状变异幅度基本相同。③同一性状在种群间和种群内的变异基本接近。④不同性状在种群间存在差异，有的显著，有的不显著。By the variations coefficient and testing the significance of character difference, five populations of Cephalotaxus mannii found in Bawang Mountain and other four regions have been studied, focusing on the intra-population as well as inter-population difference and their general morphological variation. The conclusions are drawn: (1) The variability of trophic organs is more significant than that of reproductive organs; the variation of branch angles is the least remarkable among the characters of branches; the most remarkable variation among the characters of leaves is the leaf quantity; the variation of the cones and seeds biomass is more significant than that of other characters; (2) The variation scope of the same character is nearly equal in each populalions; properties of the five populations are the same on the whole; (3) So is in inter-populations and intra-population; (4) Every characters are different in different populations, remarkable or not, but the general inter-populations morphological variation is not remarkable.

关 键 词：海南粗榧 种群 形态变异 变异系数 

分 类 号：Q949.664[生物学—植物学]