环境因素对金钟藤种子萌发的影响  

Effects of Environmental Factors on Seed Germination of Merremia boisiana

作　　者：张守信 周勇芝 黄韦 韩婷 王华锋[2] 薄文浩 龙文兴[1] 周韬 ZHANG Shouxin;ZHOU Yongzhi;HUANG Wei;HAN Ting;WANG Huafeng;BO Wenhao;LONG Wenxing;ZHOU Tao(Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants(College of Forestry,Hainan University(Wuzhishan National Long Term Forest Ecosystem Research Station,Haikou 570228,China;School of Life and Pharmaceutical Sciences,Hainan University,Haikou 570228(China;College of Biological Sciences and Biotechnology,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]热带特色林木花卉遗传与种质创新教育部重点试验室,海南大学林学院,海南五指山森林生态系统国家定位观测研究站,海口570228 [2]海南大学生命科学与药学院,海口570228 [3]北京林业大学生物科学与技术学院,北京100083

出　　处：《种子》2021年第6期14-19,25,共7页Seed

基　　金：国家自然科学基金(31870508);海南省重点研发项目(ZDYF 2020046);海南省自然科学基金(20163051);热带特色林木花卉遗传与种质创新教育部重点实验室开放基金(HAINANU 19 R 04)。

摘　　要：为了更好地了解金钟藤的扩散机制,本试验对金钟藤种子萌发的环境因素进行研究,以野外采集的金钟藤种子为试验材料,比较种皮切损、光照、温度、干旱、自化感作用等不同因素对种子萌发的影响。结果表明,切损种皮能够显著促进种子的萌发;光照不改变种子的萌发率,但会影响种子萌发后根和芽的长度;28℃时种子萌发率最高,随着温度升高萌发率降低;PEG-6000溶液模拟干旱胁迫使得种子萌发率显著下降;高浓度的金钟藤叶片提取液阻碍了金钟藤种子的萌发。To better understand the spread mechanism of M.boisiana,the environmental factors of the seed germination were studied in this experiment.The effects of different factors including seed coat cutting,light,temperature,drought and allelopathy on seed germination of M.boisiana were compared with the M.boisiana seeds collected from the field.The results showed that seed coat cutting could significantly promote the germination of M.boisiana seeds while the light did not change the germination rate of seeds but affected the length of roots and buds after seed germination.And,the seed germination rate reached the highest at 28℃,and decreased with the increase of temperature.The simulated drought stress with PEG-6000 solution significantly reduced seed germination rate,and the high concentration of the leaf extract hindered the germination of the seeds of M.boisiana.

关 键 词：金钟藤 环境因素 种子萌发 

分 类 号：Q945.78[生物学—植物学]