野生葎草种群有性生殖投入与收益差异性分析  

Variation Analysis of Sexual Reproductive Investment for Wild Humulus scandens(Lour) Merr. Population

作　　者：刘金平[1,2] 康军利[1] 

机构地区：[1]西华师范大学生命科学院,四川南充637000 [2]西南野生动植物资源保护教育部重点实验室,四川南充637002

出　　处：《西南农业学报》2010年第3期872-875,共4页Southwest China Journal of Agricultural Sciences

基　　金：四川省教育厅项目(08zc008);西华师范大学科研启动项目(06B032)

摘　　要：以南充地区不同生境处于开花盛期的8个野生葎草种群为材料,对种群大小、有性繁殖投入持续时间、雌雄株比例、投入量、投入收益等指标进行了分析,结果说明：种群半径的变异范围是0.42~3.75 m,种群自然高度的变异范围是-3.57~5.16 m,,种群的拓展面积变异范围是4.14~36.97 m2,拓展空间的变异范围是-14.87~49.35 m3;开花持续时间变异范围为72~162 d,变异系数达122%;雌株占种群的比例的变异范围是53.85%~100%;雌雄株的花序数/株、小花数/花序、花序柄长、花序轴长等参数均差异显著（P〈0.05）;种群有性生殖相对投入量标准差为5.23,变异系数为14.59%;而种群投入收益范围为23.12%~36.97%,变异系数为17.03%。The population size,duration of sexual reproduction,ratio of female plant to male plant,involvement load and investment income of 8 wild Humulus scandens（Lour）Merr.populations were analyzed and compared.The results showed： the variation ranges of the population radius was 0.42-3.75 m,that of natural height of population was-3.57-5.16 m,that of expanding area were 4.14-36.97 m2 and that and expanding space were-14.87-49.35 m2.The variation range of the flowering duration time was 72-120 d with 122 % of the variation coefficient.The variation range of the ratio of the female plant to the population was 53.85 %-100 %.And there were significant differences among the number of inflorescence/plant,number of floret/inflorescence,length of common peduncle,length of rhachis of all population plants.The standard deviation of the population input quantity was 5.23 % and the variation coefficient was 14.59 %.The variation range of income of the population was respectively 23.12 %-36.97 % and the variation coefficient was 17.03 %.

关 键 词：葎草 野生资源 有性生殖 多样性 

分 类 号：S816.41[农业科学—饲料科学]