四川桤木种子品质的调查研究  

STUDY ON THE SEED QUALITY OF ALNUS CREMASTOGYNE

作　　者：杨志成[1] 王成霖 罗国茂 葛万川 

机构地区：[1]中国林业科学研究院亚热带林业研究所

出　　处：《林业科学研究》1989年第1期84-87,共4页Forest Research

摘　　要：四川桤木(Alnus cremastogyne)原产四川邛崃山脉,栽培历史已达千年之久,是一种有着广阔前景的材用与土壤改良的多功能树种。近年来,引种栽培的地区已扩展到江苏、浙江、安徽、江西等长江中下游地区。限于以往对该树种利用多而研究少,系统和确切的资料不够充分等原因,1987年赴四川进行优树选择时,将采种问题列入专门的研究。Alnus cremastogyne is a fast growing timber tree species with much utilization. It originated in Sichuan and has been cultivated for 1000 years. So far it has been introduced to Zhejiang, Anhui and Jiangxi Provinces. Authors tested 75 copies of excellent single-tree seed and 5 copies of mixture seed from 6 counties in Sichuan and Zhejiang. The result indicated that the 1000-seed weight is 0.474 g in average and it varied from 0.15g to0.79g. The difference is obvious among different seed sources-percentageof germination was 2-83%, 43.7% in average at 25℃ room temperature. Besides, the percentage of germination was also correlated with altitude, the side of slope, especially tree age. When we want to determine the time for seed collection, we must consider the method for seed collection and the environment of seed sources.

关 键 词：四川桤木 种子 发芽率 品质 

分 类 号：S726.23[农业科学—林木遗传育种]