Allelopathy and Its Mechanism of Extract Solution of Vaccinium fragile on Quercus acutissima in Burned Forestlands(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Allelopathy and Its Mechanism of Extract Solution of Vaccinium fragile on Quercus acutissima in Burned Forestlands

Author(s):: LI Tianxing; (School of Chemistry and Life Sciences,Chuxiong Normal University,Chuxiong,Yunnan 675000)

Keywords:: burned forestlands; allelopathy; Vaccinium fragile Franch.; Quercus acutissima Carr.

Abstract:: In order to explore allelopathic effects on its mechanism of natural regeneration in burned forestlands，allelopathy and its mechanism of extract solution of Vaccinium fragile on seed germination and seedling growth of Quercus acutissima were studied with the selection of the two dominant species of coniferous broad-leaved forest in burned forestlands in central Yunnan Province.The results showed that seed germination,main root length and its fresh weight and dry weight of seedling,and seedling height and its fresh weight and dry weight of Q.acutissima were increased at lower concentration and decreased at higher concentration of extract solution of V.fragile.Content of chlorophyll and POD activity of seedling of Q.acutissima were gradually reduced,but MDA content and Pro content of seedling of Q.acutissima were promoted with the increasing concentration of extract solution of V.fragile.It was found that allelopathy of extract solution of V.fragile on Q.acutissima in burned forestlands occurred with the activity of enzyme and content of chlorophyll and seed germination and seedling growth inhibited and the degree of membrane lipid peroxidation strengthened.So the research would give us advice on man-made regeneration in burned forestlands.

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Last Update: 2016-07-28