热带作物学报2017，Vol.38Issue(3)：438-443,6.DOI:10.3969/j.issn.1000-2561.2017.03.009
不同温度对辣木种子萌发、幼苗生长及其生理特性的影响
Effects of Different Temperature Treatments on Seed Germination,Seedling Growth and Physiological Characteristics of M.oleifera Lam.
摘要
Abstract
In order to understand the effects of different temperature treatments on seed germination and seedling growth of M.oleifera Lam.,the dynamic indices of its seed germination and seedling growth at 15,20,25,30,35,40 ℃ temperature were observed.The results showed that the optimum temperature for seed germination and seedling growth was 25 ℃ and 30 ℃,the seed germination and seedling growth could be inhibited by too high or too low temperature treatments.A certain degree of high temperature and low temperature stress decreased seed germination rate,germination power and germination index,decreased stem diameter,seedling length,root length and fresh mass increment of the seedling.Under high temperature or low temperature stress,the MDA content,relative electric conductivity,soluble sugar content,SOD activity and POD activity of the seedling increased significantly,while the relative chlorophyll content,φPo,RC/ABS,PTR,PET and PIABS dropped significantly.关键词
辣木/种子萌发/幼苗生长/生理特性Key words
M.oleifera Lam./seed germination/seedling growth/physiological characteristics分类
农业科技引用本文复制引用
张天翔,林艺华,林宗铿,陈振东,杨俊杰,曹明华..不同温度对辣木种子萌发、幼苗生长及其生理特性的影响[J].热带作物学报,2017,38(3):438-443,6.基金项目
福建省公益类科研院所基本科研专项“辣木引种栽培及产品加工技术研究”(No.2016R1027-1). （No.2016R1027-1）
