西南林业大学学报2013，Vol.33Issue(2)：48-51,4.DOI:10.3969/j.issn.2095-1914.2013.02.010
4种槭树属树种种子休眠原因及解除方法
Seed Dormancy Mechanism of Four Acer Species and the Methods for Dormancy Breaking
摘要
Abstract
A systematic study was conducted to explore the causes of seed dormancy of 4 species in Acer genus and the corresponding methods for dormancy breaking.The results showed that the fruit pericarp of the 4 species had good water permeability,which suggested that pericarp permeability was not the main reason to inhibit seed germination.The vitality test of the in-vitro embryo showed that the embryo of Acer seeds didn't undergo dormancy.Among the dormancy breaking treatments,the low temperature stratification taken directly with the dry seeds requested the longest time,the time needed for dormancy breaking was obviously shortened by soaking the seeds in gibberellic acid (GA) solution or in pure water for 36 h before the low temperature stratification.But there was no significant difference between the methods to soak the seeds in GA solution or in the pure water for 36 h.The tests also showed that the seed soaking time duration in GA solution did not impact much on dormancy breaking effect.The seed dormancy for Acer rubrum and A.palmatum could be overcome by soaking the seeds in GA solution for 48 h and followed by 10 days stratification with alternating temperature,and the time required was much shorter than that of needed with regular low temperature stratification.Therefore,it was concluded that the better treatment to break the seed dormancy for the above two species would be soaking the seeds in GA solution combined with alternating temperature stratification.关键词
槭树属/种子休眠/低温层积/内源抑制物/变温层积Key words
genus Acer / seed dormancy / cold stratification / inhibitory substances / seed stratification at alternating temperature分类
农业科技引用本文复制引用
吴静,侯静,马秋月,李淑娴..4种槭树属树种种子休眠原因及解除方法[J].西南林业大学学报,2013,33(2):48-51,4.基金项目
国家自然科学基金项目(31270711)资助. （31270711）
