Allelopathic potentials of Larix leptolepis on germination of several forest tree species
1988
Park, Y.G. | Shin, D.I. (Kyongbuk National Univ., Taegu (Korea R.). Coll. of Agriculture) | Kang, K.S. (National Federation of Forest Associations Union, Yangsan (Korea R.). Training and Extension Service Center for Private Forest Management)
Inhibitory effect of L. leptolepis fallen leaf extracts on the germination of Pinus densiflora x Pinus rigitaeda, Pinus rigida, Pinus thunbergii and Larix leptolepis was investigated. Germination of those seeds in culture room and in pot at field showed the highly significant inhibitory effects by the aqueous extracts from L. leptolepis fallen leaves. Among them L. leptolepis was the most severely inhibited by the aqueous extracts used. To identify allelopathic substances, thin-layer chromatography was employed. Gallic, ferulic, t-cinnamic and vanillic acids were identified from fallen leaves of L. leptolepis. From the results, it is assumed that autotoxicity of L. leptolepis may act as inhibitory factor on germination of the species in natural stands
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