森林工程2012，Vol.28Issue(5)：1-5,10,6.
濒危树种极东锦鸡儿（Caragana fruticosa）种子的萌发特性
Seed Germination Characteristics of an Endangered Species-Caragana Fruticosa
摘要
Abstract
Caragana fruticosa is an endangered tree species of Caragana.Physical traits of mature seeds and the effects of temperature on the seeds germination and seedlings growth of C.fruticosa were investigated.The results indicated that seed setting rate was low,and there were about 1/4 seeds damaged by insects.The moisture content of mature seeds was 6.6%,and the 1000-seed weight of mature seeds was 18.6 g.The seed length,seed width,and seed thickness existed some variation.The seeds were 0.42 cm long,0.27 cm width,and 0.24 cm thickness in average,the ratio of length and width was 0.64.The water permeability of seed coat was fine.Effects of different temperatures on germination percentage of C.fruticosa seeds were highly significant.The seed germination percentage was the highest(38.33%)in 25℃.With the temperature rise or reduce,the germination percentage of C.fruticosa seeds was reduced.The 8th day of germination test was the suitable period for calculating the seeds germination potential.Differences in the seedling height of C.fruticosa under different temperatures were highly significant,and the differences in the radicle length were significant.25℃ was the optimum temperature for seedling height and radicle length increment,however,higher temperature(30℃)was conducived to be better for the seedling biomass accumulation of C.fruticosa.关键词
极东锦鸡儿/种子萌发/幼苗生长/温度Key words
Caragana fruticosa/seed germination/seedling growth/temperature分类
农业科技引用本文复制引用
杨玲,翟晓杰,沈海龙..濒危树种极东锦鸡儿（Caragana fruticosa）种子的萌发特性[J].森林工程,2012,28(5):1-5,10,6.基金项目
黑龙江省教育厅科学技术研究指导项目 （）
中央高校基本科研业务费专项资金 （）
