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当前位置: 首页 > 文章 > 四川麻疯树花序结构和雌雄花动态研究 四川林业科技 2008,29 (2) 4-11
Position: Home > Articles > The Inflorescence Structure and Dynamics of Male and Female Flowers of Jatropha curcas in Sichuan Province Journal of Sichuan Forestry Science and Technology 2008,29 (2) 4-11

四川麻疯树花序结构和雌雄花动态研究

作  者：
何亚平;费世民;徐嘉;陈秀明;蔡小虎;雷彻虹;王乐辉;罗建勋
单  位：
攀枝花市林业局;四川省林业科学研究院
关键词：
麻疯树;单性花同株;生殖物候;雌雄花比例;性比
摘  要：
本文研究了四川麻疯树雌雄花序结构和雌雄花动态,初步描述了麻疯树的花序结构和生殖物候,分析了雌雄花数目和比例的影响因素。麻疯树为单性花同株,腋生或顶生聚伞花序,雌花一般着生于有限花序的顶端,雄花由无限花序的顶端产生。由于资源限制,麻疯树花蕾期雌花和雄花并不能全部发育至开放阶段,中途出现萎蔫、脱落。生殖物候存在很大的样地间差异,也存在样地内麻疯树着生微环境异质性的差异。麻疯树雌花比例和数目存在较大的样地间差异,可能受水分条件的影响。开花时间也会影响到雌花比例和数目,头茬花高于二茬花,早花高于晚花。结果枝的大小会影响到雌花数目和比例,结果枝越大,雌花数目和比例越大。综合分析,麻疯树单枝雌花数目、雌雄花比例可能受单枝头年的将来投资和样地非生物环境的影响。
译  名：
The Inflorescence Structure and Dynamics of Male and Female Flowers of Jatropha curcas in Sichuan Province
作  者：
HE Ya-ping1 FEI Shi-min1 XU Jia1,CHEN Xiu-ming1 CAI Xiao-hu1LEI Chen-hong2 WANG Le-hui1 LUO Jian-xun1(1.Sichuan Academy of Forestry,Chengdu,610081;2.Forestry Bureau of Panzhihua,Panzhihua,617027,China)
关键词：
Jatropha curcas,Monoecy,Reproductive phenology,Proportion of male and female flowers,Sex ratio
摘  要：
Thia paper deals with the inflorescence structure and flowering dynamics of male and female flowers of Jatropha curcas in Sichuan province,describes the inflorescence structure and reproductive phonology and preliminarily analyzes the factors influencing the number and proportion of male and female flowers.Jatropha curcas is a monoecious species.Its female flowers generally grow in the apex of finite inflorescences,and its male flowers in the apex of infinite inflorescences.However,influenced by the resource limitation,not all the male and female flowers in the bud stage can develop to flowering stages,and some flowers will wilt and fall off.Reproductive phonology has significant differences among plots and micro-environment heterogeneity within plots.There are also significant differences in the proportion and number of female flowers between plots.Flowering time will also affect the number and proportion of female flowers.The number and proportion of the first batch of flowers are higher than those of the second batch of flowers,and those of the early flowers are higher than those of late flowers.The size of reproductive branches will influence the number and proportion of female flowers,indicating that the bigger the branches,the bigger the number and proportion of male and female flowers.Generally speaking,the number and proportion of male and female flowers of Jatropha curcas may be influenced by future allocation of reproductive branches last year and nonbiological environment of plots.

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