森林与环境学报2017，Vol.37Issue(1)：29-33,5.DOI:10.13324/j.cnki.jfcf.2017.01.005
凋落物浸提液对杉木种子萌发及幼苗的影响
Effects of Chinese fir litter extracts on the seed germination and seedlings
摘要
Abstract
To study the allelopathic effect of Chinese fir litter on seed germination and enzyme activity, Chinese fir seeds were treated with different concentrations of Chinese fir litter extracts using the laboratory incubation method and Chinese fir seed germination status, growth of seedlings and related enzyme activity were measured. Results showed that:low concentration (10 g·L-1) of Chinese fir litter extracts promoted seed germination and seedling growth, and general performance, however, with the increasing concentration, seed germination percentage, the germination potential and root length, shoot length, leaf length and fresh weight of seedlings were suppressed. Among these indicators, root length is the most sensitive one reacting to Chinese fir extracts; the SOD activity decreased and the MDA, CAT and POD activity increased with the concentration growing, when it up to the maximum concentration, MDA increased significantly compared with control. In general, extracts with low concentration improved the seed germination and growth of seedlings but inhibited and led to the disorder of the antioxidant enzyme system by high concentration of extracts. In conclusion, the allelopathic effect of Chinese fir litter extracts on seedlings gradually increased with the increasing concentration.关键词
杉木/浸提液/种子萌发/抗氧化酶Key words
Chinese fir/extract/seed germination/antioxidant enzyme分类
农业科技引用本文复制引用
庄正,李艳娟,刘青青,杨振,刘博,刘爱琴..凋落物浸提液对杉木种子萌发及幼苗的影响[J].森林与环境学报,2017,37(1):29-33,5.基金项目
福建省科技厅重点项目(2014N0002) （2014N0002）
福建农林大学科技发展基金项目( KF2015035) （ KF2015035）
国家科技支撑计划(2015BAD09B010102)。 （2015BAD09B010102）
