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Effect of water extracts of larch on growth of Manchurian walnut seedlings

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Abstract

A study was conducted to detect the effect of water extracts from different parts such as root, bark, branch and leaf, of adult larch,Larix gmelini, trees on growth of Manchurian walnut,Juglans mandshurica, seedlings and the allelopathy between the two tree species. Four concentrations (100 g·kg−1, 50 g·kg−1, 25 g·kg−1 and 12.5 g·kg−1) were prepared for each kind of extracts. Result showed that the water extracts with low and moderate concentrations accelerated the growth of collar diameter and increased biomass and root/shoot ratio of walnut seedlings. The water extracts from branches and barks with low and moderate concentrations accelerated the height growth of the seedlings, while those from leaves and roots slightly decreased the height growth of seedlings. The fact that application of water extracts of larch improved the growth of manchurian walnut attributes possibly to the allelopathy between the two tree species.

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Authors and Affiliations

  1. College of Forestry, Northeast Forestry University, 150040, Harbin, P.R. China

    Yang Li-xue

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  1. Yang Li-xue
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Foundation item: This paper was supported by National Natural Science Foundation of China (No. 30400341) and Heilongjiang Provincial Science Foundation (No. C0320)

Biography: YANG Li-xue (1973-), male, Ph.D. candidate, Lecturer in Northeast Forestry University, Harbin, 150040, P.R. China.

Responsible editor: Song Funan

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Li-xue, Y. Effect of water extracts of larch on growth of Manchurian walnut seedlings. Journal of Forestry Research 16, 285–288 (2005). https://doi.org/10.1007/BF02858190

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  • DOI: https://doi.org/10.1007/BF02858190

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