广西人心果开花习性研究

对广西人心果开花习性、花粉萌发和传粉方式进行研究，结果表明；人心果1年可开多次花，不同的年份开花期有所变动，花期长。由结果母枝的顶芽形成混合花芽抽生结果枝，两性花，腋生，雌雄同熬，雌蕊和雄蕊在花瓣未展开前已成熟。花在白天开放，结果枝下部的花先开放，再由下到上逐渐开放。花粉在人工培养条件下，其萌发率低，柱头未分泌粘液前和花开放后期花粉萌发率为0．0％，成熟期的花粉萌发率可达5．2％，花刚开放时花粉萌发率最高达10．1％。人心果的传粉方式有2种，一是昆虫传粉，发现花蓟马是主要的传粉媒介；二是靠风的机械作用振落花粉而授粉。花量大，每结果枝平均着花为8朵，但平均落花率高达82．7％。

Study on Flowering Habit of Manilkara zapodilla in Guangxi

The researches on the flowering habit, pollen germination and pollination methods showed that Manilkara zapodilla could flower several times in one year and had longer flowering period, otherwise, flowering period would be changed with the year. The combined flower buds from the peak sprout of female branch, would become bearing shoots. Manilkara zapodilla had bisexual, axiilary flowers. And the flowers were homogamous, before petals expanded. The flowers at the bottom of branch earlier blossomed in the daytime, so did the others in turn from bottom to top. The proportion of pollen germination was low under artificial culture. It was 0. 0% before stigma excreted mucilage or at the later stage of blossom. It would be 5. 2% during pollen maturation period, and it could reach about 10. 1 % at the beginning of blossom. Manilkara zapodilla had two kinds of pollination methods. One was entomoplily, and Frankliniella sp. was one of the major pollination media. Another was wind pollination. The amount of flowers was large, and 8 buds were inserted averagely in one branch, but the rate of flower abscission was about 82.7 %.