濒危植物狭叶坡垒的迁地保护

濒危植物狭叶坡垒 (H opea chinensis)是国家一级保护植物 ,原产我国广西十万大山、大青山。 1 990年 1 2月引入云南西双版纳热带植物园 (以下简称植物园 )栽培 ,9年来生长良好 ,树高年平均增加 0 .84m,地径年均加粗 1 .1 3 cm,比广西植物所种质园的植物生长快 ,树龄 3～ 5 a即开花结果 ,花期 5～ 7月 ,果熟期 9～ 1 0月 ,我园保存的 1 5 0株狭叶坡垒中有 1 0 0株已开花结果 ,种子发芽率极高 ,可达 94%± 6.0 % ;种子含水量与种子萌发的试验结果表明 :种子含水量与发芽率成显著的正相关关系 ,与播后首萌时间成显著的负相关关系。经多年观察 ,未见任何寒害和严重的病虫害 ,说明狭叶坡垒在西双版纳热带植物园迁地保护获得成功。

Ex situ conservation of Hopea chinensis

Hopea chinensis Hand. -Mazz., a rare and endangered species of first grade protection listed in the Nation Documents, is native to Guangxi (Shiwandashan Mountain and Daqingshan Mountain), China. It was introduced into Xishuangbanna Tropical Botanical Garden from Shangsi, Guangxi in 1990, now is growing very well. The mean annual height of the trees increases 0 84 m, average diameter of based part increases 1 13 cm,growing faster than those introduced in the germ plasm collection of Guangxi Institute of Botany. It begins bloom and fruit after 3～5 years. The flowering period is May to June, fruit period September to October. Seed germination ratio is 94%±6 0%. The result from the seed germination indicated that there is the positive correlation between seed moisture and germination ratio,the negative correlation between seed moisture and the period when the first seed is germinated. Through several years's observation, no cold injury or serious disease and damage occurred. It showed that ex situ conservation was successfully carried out of Hopea chinensis in Xishuangbanna Tropical Botanical Garden.