濒危植物风箱果的致濒因素分析  

Analysis on Endangered Factors of Endangered Plant——Physocarpus amurensis

作　　者：于海中[1] 张迎新[1] 王金红[1] 

机构地区：[1]黑龙江省森林植物园,黑龙江哈尔滨150040

出　　处：《防护林科技》2014年第1期21-22,共2页Protection Forest Science and Technology

摘　　要：在我国自然分布的风箱果(Physocarpus amurensis)仅1种,自然更新能力较差,濒临灭种。文章从风箱果的开花结实和播种出苗方面研究了导致风箱果濒危的因素。结果表明:风箱果自花不能授粉,属异花授粉植物,需借助外部媒介,主要是靠昆虫和风传粉。风的传粉概率很低,而自然分布的风箱果的立地条件恶劣,株数分布有限,限制了昆虫的种类和数量,导致了昆虫的传粉率也不高,从而造成了风箱果的结实率低。另一方面,未经处理保持自然状态的风箱果种子的播种出苗率较低。结实率低和播种出苗率低是导致风箱果濒危的重要原因。There is only one species about Physocarpus amurensis in China.Its reproductive capacity is very inferior, and seedling has rarely been found under natural condition.The article studies the endangered factors from flower and fruit &seeding emergence.Result shows that:Physocarpus amurensis are not self-pollinated flowers,being different flower pollinate plant.It must pollinate by insect and wind.Probability of pollination for wind is low;the species &number of insect are limited by the difficult site for natural-distributed Physocarpus amurensis,so the pollinate rate of insect is not high;the reason leads to that the seed setting rate of Physocarpus amurensis is lower.On the other hand,the seeding emergence of natural seeds for Physocarpus amurensis is very low.The endangered reason of Physocarpus amurensis is that setting rate &seeding emergence are low.

关 键 词：风箱果 致濒因素 结实率 出苗率 

分 类 号：S793.9[农业科学—林木遗传育种]