不同种群中海南粗榧(Cephalotaxus mannii)形态变异研究

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，但种群间形态总体差异都不显著

Study on the morphological variations of Cephalotaxus mannii in different populations

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.