广西平果县岩溶石山飞机草种群的生殖配置研究  

Study on Reproductive Allocation of Eupatorium odoratum Population in Karst Mountain in Pingguo County of Guangxi

作　　者：韦春强[1] 唐赛春[1] 刘明超[1,2] 潘玉梅[1] 蒲高忠[1] 岑艳喜[1,2] 

机构地区：[1]广西壮族自治区中国科学院广西植物研究所,广西桂林541006 [2]广西师范大学,广西桂林541004

出　　处：《杂草科学》2011年第4期20-23,共4页Weed Science

基　　金：国家科技支撑计划(编号:2006BAC01A10);广西科技攻关(编号:0719005;0992026-5)

摘　　要：对广西岩溶石山3个典型群落——飞机草优势群落(优势群落)、黄荆条-飞机草混合群落(混合群落)和类芦-蔓生莠竹群落(伴生群落)中飞机草种群的生殖配置进行了研究。结果表明:(1)3个群落中飞机草的营养构件(根、茎和叶)生物量占总生物量的百分比均达90%以上,在构件生物量分配比率方面表现出基本一致的规律,即茎>根>叶>花果;(2)3个群落中飞机草的生殖配置平均为6.1%。优势群落中飞机草的生殖配置与伴生群落有显著差异(P=0.009),而混合群落中飞机草的生殖配置与优势群落和伴生群落均无显著差异;(3)3个群落中飞机草的生殖配置与株高均存在显著的正相关关系,而与分枝数和总生物量相关性不显著。The reproductive allocation of Eupatorium odoratum in three types population including E.odoratum dominant population（dominant population）,Vitex negundo-E.odoratum component population（component population） and Neyraudia reynaudiana-Microstegium vegans population（concomitant population） were studied in Karst mountain of Guangxi.The results showed that：（1） In the three types population,biomass proportions of E.odoratum nutritional organs（root,stem and leaf） in the total biomass are all more than 90%,and three populations present a same trend in biomass allocation ratio,that is stemrootleafflower and seed.（2） In the three types population,average reproductive allocation of E.odoratum is 6.1%.There are significant differences in reproductive allocation ratio of E.odoratum between dominant and concomitant population,but there is no significant difference between component and other populations.（3） In the three populations,there are significantly positive correlations between reproductive allocation ratio and plant height,but there is no significant correlation between reproductive allocation ratio and branch number,total biomass.

关 键 词：岩溶石山 飞机草 生殖配置 入侵 

分 类 号：Q948[生物学—植物学]