Fuchsia parviflora is a dioecious shrub that depends on biotic pollination for reproduction. Previous studies suggest that the male plants produce more flowers, and male-biased sex ratios have been found in some natural populations. To assess whether the biased sex ratios found between genders in natural populations are present at the point at which plants reach sexual maturity, and to identify possible trade-offs between growth and reproduction, we performed a common garden experiment. Finally, to complement the information of the common garden experiment, we estimated the reproductive biomass allocation between genders in one natural population. Sex ratios at reaching sexual maturity in F. parviflora did not differ from 0.5, except in one population, which was the smallest seedling population. We found no differences between genders in terms of the probability of germination or flowering. When flowering began, female plants were taller than males and the tallest plants of both genders required more time to reach sexual maturity. Males produced significantly more flowers than females, and the number of flowers increased with plant height in both genders. Finally, in the natural population studied, the investment in reproductive biomass was seven-fold greater in female plants than in male plants. Our results showed no evidence of possible trade-offs between growth and reproduction. Despite the fact that female plants invest more in reproductive biomass, they were taller than the males after flowering, possibly at the expense of herbivory defence.

中文翻译：

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雌雄异株灌木 Fuchsia parviflora 达到性成熟时的性别比和生活史特征：田间和普通花园实验

小花紫红色是一种依赖生物授粉繁殖的雌雄异株灌木。先前的研究表明，雄性植物会产生更多的花朵，并且在一些自然种群中发现了偏向雄性的性别比例。为了评估在植物达到性成熟时是否存在自然种群中性别之间的性别比例偏差，并确定生长和繁殖之间可能的权衡，我们进行了一个常见的花园实验。最后，为了补充普通花园实验的信息，我们估计了一个自然种群中性别之间的生殖生物量分配。达到性成熟时的性别比例F. parviflora与 0.5 没有差异，除了一个种群是最小的幼苗种群。我们发现性别之间在发芽或开花的概率方面没有差异。开花开始时，雌性植物比雄性植物高，两性最高的植物需要更多时间才能达到性成熟。雄性产生的花朵明显多于雌性，并且雌雄的花朵数量都随着株高的增加而增加。最后，在研究的自然种群中，雌性植物对生殖生物量的投资是雄性植物的七倍。我们的结果显示没有证据表明生长和繁殖之间可能存在权衡。尽管雌性植物对生殖生物量的投入更多，但开花后它们比雄性植物高，