江西农业大学学报2012，Vol.34Issue(1)：77-81,5.
紫茎泽兰气态挥发物对云南松种子萌发及幼苗生长的化感作用
Allelopathic Effect of Volatiles of Eupatorium adenophorum on Seed Germination and Seedling Growth of Pinus Yunanensis
摘要
Abstract
In order to know the allelopathy of stem and leave volatiles of Eupatorium adenophorum, Pinus yunnanensis seeds were treated by fresh stem and leave of E. Adenophorum of different quality in transparent airtight boxes, the concentrations are high concentration(0. 069 4 g/cm3) , middle concentration (0.023 1 g/ cm3)and lower concentration (0.007 7 g/cm3) respectively. The results showed that the volatiles had a significant influence on seed germination process of P. Yunnanensis , the day on which seeds started to germinate, the day on which germination pinnacle came, the day on which germination number descended significantly, all delayed with the increase of concentrations, seed germination numbers of the day at the germination pinnacle also delayed with the increase of concentrations, so the germination process curves became gentle with the increase of concentrations, and nearly became a beeline at high concentration. The tendency of the effects of the volatiles on seed germination ( seed germination rate, seed germination potential, seed germination speed) and seedling growth (fresh weight, dry weight, radicle length, hypocotyl length)of P. Yunnanensis was similar , showing a rule that high concentration had a negative effect on seed germination and seedling growth, the negative effect became weaker and weaker with the descent of concentrations. E. Adenophorum was widelydistributed on the ground under P. Yunnanensis forest, and might influence natural regeneration and growth of P. Yunnanensis by allelopathy.关键词
紫茎泽兰/气态挥发物/云南松/种子萌发/幼苗生长/化感作用Key words
Eupatorium adenophorum/ volatile/ Pinus yunnanensis/ seed germination/ seedling growth/ allelopathy分类
农业科技引用本文复制引用
曹子林,王晓丽,杨桂英..紫茎泽兰气态挥发物对云南松种子萌发及幼苗生长的化感作用[J].江西农业大学学报,2012,34(1):77-81,5.基金项目
国家自然科学基金(31060093)、西南林业大学生态学校级重点建设学科项目(XKX200902)和西南林业大学基金(200726M) （31060093）
