珍稀濒危植物茴香砂仁种子萌发特性研究  

Research on Seed Germination Properties of Rare andEndangered Plant Etlingera yunnanensis

作　　者：杨婷婷[1] 任四妹[2] 潘耕耘[2] 欧鉴基 赵薇 YANG Tingting;REN Simei;PAN Gengyun;OU Jianji;ZHAO Wei(Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Mengla Yunnan 666303,China;Pu'er College,Pu'er Yunnan 665000,China)

机构地区：[1]中国科学院西双版纳热带植物园,云南勐腊666303 [2]普洱学院,云南普洱665000

出　　处：《种子》2024年第4期88-93,F0002,共7页Seed

基　　金：云南省林业和草原局野生植物保护项目“极小种群野生植物茴香砂仁的拯救保护”(2023SJ09X-02)。

摘　　要：本试验以茴香砂仁野外居群的种子为材料,对种子的形态、千粒重、含水量进行测量,探索不同处理方法(未处理、常温浸种、打磨、60℃热水浸种、打磨后60℃热水浸种),不同温度(15℃、20℃、25℃、30℃),不同采集时间(7月、8月、9月),80%浓硫酸浸泡不同时间(30 s、1 min、2 min、5 min),不同浓度(100 mg/L、200 mg/L、500 mg/L)的赤霉素溶液浸泡不同时间(6 h、12 h、24 h)对种子萌发的影响。结果表明,茴香砂仁种子千粒重为(24.56±0.11)g,含水量为(18.97±0.72)%;温度对种子萌发率的影响不显著,采集时间对种子萌发率的影响较大,7月采收的种子萌发率为0,9月采收的种子萌发率为73.67%;浓硫酸浸泡处理的种子均未萌发;赤霉素处理能提高种子的萌发率并缩短萌发时间,200 mg/L赤霉素溶液浸泡6 h,萌发率为84.33%,萌发时间提前15 d。In this experiment,the seeds of the field population of Etlingera yunnanensis were used as materials to measure the seed morphology,thousand-grain weight and water content,and different treatment methods were explored(untreated,normal temperature soaking,grinding,60℃hot water soaking,60℃hot water soaking after grinding),different temperatures(15℃,20℃,25℃,30℃),and different collection times(July,August,September).The effects of 80%concentrated sulfuric acid soaking for different time(30 s,1 min,2 min,5 min),and different concentration(100 mg/L,200 mg/L,500 mg/L)of gibberellin solution soaking for different time(6 hours,12 hours,24 hours)on seed germination.The results showed that the 1000-grain weight of the seed was(24.56±0.11)g,and the water content was(18.97±0.72)%.The influence of temperature on seed germination rate was not significant,but the influence of collection time on seed germination rate was great.The germination rate of seeds harvested in July was 0,and the germination rate of seeds harvested in September was 73.67%.The seeds soaked in concentrated sulfuric acid did not germinate.Gibberellin treatment could improve the germination rate and shorten the germination time of seeds.After soaking 200 mg/L gibberellin solution for 6 hours,the germination rate was 84.33%and the germination time was 15 days earlier.

关 键 词：茴香砂仁 假种皮 打磨 种子萌发 

分 类 号：Q945.34[生物学—植物学]