林下枯落物浸提液对香果树种子萌发及幼苗生长影响的化感效应

Allelopathic Effects of Extracts from Litters in Forest on Seed Germination and Seedling Growth of Emmenopterys henryi

研究了香果树的落叶、树枝、果皮及竹叶等4种林下枯落物浸提液对香果树种子萌发和幼苗生长的化感效应。结果表明:香果树落叶、树枝及竹叶浸提液对香果树种子萌发具有不同程度抑制作用,并随浓度升高抑制作用增强。对香果树幼苗生长的化感效应,香果树落叶和果皮浸提液具有显著抑制作用,随浓度升高抑制作用增强;香果树树枝浸提液总体趋势具有“低促高抑”的双浓度效应;竹叶浸提液对香果树幼苗不同部位化感效应不同,具有“促茎抑叶”的化感效应。

In this study, we investigated the allelopathic effects of four kinds of litters extracts on seed germination and seedling growth. The results showed inhibitory effects of extract from foliage and twigs of Emmenopterys henryi and bamboo leaves on seed germination exerted to various degree and much more with the concentration increase. The extract of Emmenopterys henryi leaves and peel had a strongly inhibiting effect, which increases with the increases of concentration. The extract of Emmenopterys henryi branches generally trend to have the double concentration effects of "low concentration of extract for promotion and high concentration for inhibition".The allelopathic effects of bamboo leaves extract were different on different parts of Emmenopterys henryi seedlings, that is, promoting stem and inhibiting leaves.