摘要
通过对低温层积不同时间野鸦椿种子内含物质变化情况,及不同播前预处理种子发芽情况的研究,得出如下结论：（1）野鸦椿种子不通过低温层积处理无法萌发。（2）野鸦椿种子在层积过程中主要通过大分子油脂类物质水解作种子萌发的物质动员。（3）野鸦椿种子通过低温层积的方法解除休眠的时间应控制在90～120 d内,层积时间过长发芽率反而下降。这与同属植物圆齿野鸦椿种子的萌发特性一致。（4）层积90～120 d时种子内可溶性糖含量有较大幅度下降,同时在120 d时种子的发芽率达到峰值,表明可溶性糖是野鸦椿种子萌发的直接利用能源物质。
Changes of reserved nutrients in Euscaphis japonica seeds during the process of stratification were studied, and seed germination characteristics after different pretreatments were investigated in this paper. The results were shown as following： （1）Seeds are unable to germinate under no low temperature stratification. （2）Seed germination of Euscaphisjaponica were primary mobilized by hydrolysis of macromolecular grease-like substance in the process of stratification. （3） The stratification time should be controlled within the 90 - 120 d, longer stratification time would make the rate of germination declined. The conclusions was the same as the result of Euscaphis konishii Hayata seeds, which belongs to the same genus as Euscaphisjaponica seeds. （4）During the stratification period of 90- 120 d, the content of soluble sugar declined significantly, as the same time, seeds germination rate arrived at peak in the 120 d, showing that soluble sugar was directly used for energy source of seed germination.
作者
张莉梅
张子晗
喻方圆
ZHANG Li-mei ZHANG Zi-han YU Fang-yuan(Collaborative Innovation Center of Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, Jiangsu, China School of Nature Reserve,Beijing Forestry University, Beijing 100083, China)
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2016年第11期36-40,共5页
Journal of Central South University of Forestry & Technology
基金
江苏高校优势学科建设工程资助项目(PAPD)
国家林业局林业科技成果推广项目"南方珍贵用材树种苗木高效培育技术示范与推广"
关键词
野鸦椿种子
休眠
低温层积
发芽
储存营养物质
Seeds of Euscaphisjaponica
Dormancy
Low temperature stratification
Germination
Reserved nutrients
