热带亚热带植物学报2026，Vol.34Issue(3)：298-308,11.DOI:10.11926/jtsb.5013
不同贮藏条件下火力楠种子的生理响应机制
Physiological Response Mechanism of Michelia macclurei Seeds Under Different Storage Conditions
摘要
Abstract
To explore the physiological response mechanism of Michelia macclurei seeds under different storage temperatures and conditions,the viability,germination rate,moisture content,physiological and biochemical indicators were determined.The results showed that with the extension of storage time,the viability,germination rate,protein content,and activities of superoxide dismutase(SOD),peroxidase(POD),catalase(CAT)and amylase(AMY)of the seeds all showed a downward trend;the contents of soluble sugar and malondialdehyde(MDA)first increased and then decreased,and the MDA content after storage was always significantly higher than that before storage.The moisture content of seeds stored at 4℃,-20℃and-196℃showed a trend of first decreasing and then increasing;among them,the seeds stored at 4℃and-196℃had higher viability,germination rate,soluble sugar and protein content,as well as SOD,POD,CAT and AMY activities.In addition,retaining the pseudocarp significantly increased the viability and germination rate of the seeds.The germination rate and viability were significantly or extremely significantly correlated with contents of moisture,soluble sugar,protein and MDA,as well as activities of SOD,POD,CAT and AMY.Storage temperature,storage duration and the removal of pseudocarp all had significant effects on the physiological and biochemical indicators of M.macclurei seeds.Therefore,in the actual storage process,low temperature(such as 4℃or-196℃)combined with pseudocarp protection could be adopted to maintain the physiological activity of M.macclurei seeds to the greatest extent and extend their storage life.关键词
火力楠/顽拗性种子/贮藏温度/生理生化指标/假种皮Key words
Michelia macclurei/Recalcitrant seed/Storage temperature/Physiological and biochemical indicator/Pseudocarp引用本文复制引用
田生辉,郭朗,陈朝黎,张良,薛皓月,张世达,邓永胜,申文辉,姜清彬..不同贮藏条件下火力楠种子的生理响应机制[J].热带亚热带植物学报,2026,34(3):298-308,11.基金项目
广西自筹经费林业科技项目(2024GXZCLK02) （2024GXZCLK02）
广东省林业科技创新项目(2025KJCX006)资助 This work was supported by the Self-funded Project for Forestry Science and Technology in Guangxi(Grant No.2024GXZCLK02),and the Project for Forestry Science and Technology Innovation in Guangdong(Grant No.2025KJCX006). （2025KJCX006）
