POPULATION-STRUCTURE AND REPRODUCTION IN THE NEOTROPICAL DIOECIOUS TREE COMPSONEURA-SPRUCEI
POPULATION-STRUCTURE AND REPRODUCTION IN THE NEOTROPICAL DIOECIOUS TREE COMPSONEURA-SPRUCEI
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DOI：
10.1007/bf00384493
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发表时间：
1982-01-01
期刊：
影响因子：
2.7
通讯作者：
BULLOCK, SH
中科院分区：
文献类型：
--
作者：
BULLOCK, SH
在热带雨林样地中，云杉种群的性别分布是随机的，在营养维度上相似。成年人的性别比估计为1.25男性：女性。种群每年出现2次开花盛期，开花强度不等。性别差异大小依次为开花频率、每花序花数和每株花序数。多数雌株每开花一次只成熟0~10粒种子/株。树的大小比雌性更能反映雄性的繁殖力。雌雄双方的繁殖都被少数几棵多产的树所支配。
In rain forest study plots, the sexes of C. sprucei (Myristicaceae) were randomly distributed and similar in vegetative dimensions. The sex ratio among adults was estimated as 1.25 male:female. The population showed 2 flowering episodes per year, of unequal intensity. Sexual dimorphisms in order of increasing difference included the frequency of flowering, the number of flowers per inflorescence and the number of inflorescences per tree. Most females matured only 0-10 seeds/tree per flowering episode. Tree size was a better indicator of fecundity in males than females. Reproduction in both sexes was dominated by a vew few prolific trees.