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首页> 外文期刊>Flora Malesiana Bulletin >X. AGE OF FIRST FRUITING IN TWO PLANTED PHILIPPINE DIPTEROCARP SPECIES
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X. AGE OF FIRST FRUITING IN TWO PLANTED PHILIPPINE DIPTEROCARP SPECIES

机译：X.两种菲律宾双壳物种的第一果的年龄

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摘要

It is well known that pioneer tree species start with reproduction at an early age. It has also been observed that species classified as climax trees can set flowers when still comparatively young, as has been documented for dipterocarps by e.g. Foxworthy (1932), Kochummen (1961), Wyatt-Smith (1963), Ng (1966, 1974, 1980), Srivastava (1977), Tang (1978), and Lee (1980). Although flowers have been observed in individual dipterocarps at an age as early as 6 months (Dipterocarpus oblongifolius) those usually failed to produce viable seeds (Ng, 1966). The production of viable seeds has been reported for 6-8 years old plants by Tang (1978) and Lee (1980) (both cited in Ng, 1981). Tests by Ng (1966) on the viability of seeds of individuals with known age(27-37 years) showed that all but one of the species tested developed viable seeds. A group of species which had been planted 15-30 years before the test but where the individual age of the trees was unknown were also included. These species, one of themDipterocarpus kerrii which also occurs in the Philippines, also developed viable seeds.
机译：众所周知，先锋树种从小就开始繁殖。还已经观察到，分类为高潮树的树种在还比较年轻的时候就可以开花，例如由罗汉果（B. Foxworthy（1932），Kochummen（1961），Wyatt-Smith（1963），Ng（1966、1974、1980），Srivastava（1977），Tang（1978）和Lee（1980）。尽管早在6个月大时就已在单个龙脑果中观察到花（Dipterocarpus oblongifolius），但这些花通常无法产生有生命力的种子（Ng，1966）。 Tang（1978）和Lee（1980）（在Ng，1981中都引用）报道了6-8年龄植物的可行种子的生产。 Ng（1966）对已知年龄（27-37岁）的个体的种子生存力进行的测试表明，除其中一个物种外，所有其他物种均发育了可行的种子。测试前已种植了15至30年的一组物种，但树木的单个年龄未知。这些物种，其中之一也分布在菲律宾的角pt（Dipterocarpus kerrii），也培育了可行的种子。

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