Allelopathic potential of Sassafras tzumu (Lauraceae) on seed germination and seedling growth of Brassica rapa chinensis L.

被引：0
|
作者：
Wan, Z. B. [1 ]
Zhu, C. L. [1 ]
Sun, H. G. [1 ,2 ]
Wang, X. F. [1 ]
Xiong, J. [1 ]
机构：
[1] Huangshan Univ, Coll Life & Environm Sci, Huangshan 245041, Peoples R China
[2] Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China
来源：
ALLELOPATHY JOURNAL | 2017年 / 41卷 / 01期
关键词：
Alcohols; allelochemicals; allelopathic potential; esters; germination; leaf extracts; phenols; Sassafras tzumu; seedling growth; weed; PLANT-GROWTH; ALLELOCHEMICALS;
D O I：
暂无
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
The allelopathic potential of leaf extracts of S.tzumu on seed germination and seedling growth of Brassica rapa chinensis was determined and the extract constituents were determined using gas chromatography-mass spectrometer. The leaf extracts significantly decreased B. rapa seed germination and seedling growth at concentrations >= 0.8 g/ml. The seedling dry weight was unaffected. The root length of B. rapa seedlings was more sensitive to leaf extracts than stem elongation. Gas Chromatography-Mass Spectrometer (GC-MS) analysis detected 79 allelochemicals in the leaf extract of S. tzumu, which mainly consisted of phenol, alcohols and esters. The major components were 2,2 '-Methylene-bis(6-tert-butyl-para-cresol) (CAS no: 119-47-1) and 1,4,5,8-Naphthaldiimide (CAS: 5690-24-4). The effects of these two chemicals on B. rapa seed germination and seedling growth were also examined. Brassica rapa was more sensitive to 1,4,5,8-Naphthaldiimide than to 2,2 '-Methylene-bis(6-tert-butyl-para-cresol), suggesting that 1,4,5,8-Naphthaldiimide might be the major allelochemical in the ether fraction of the leaf extract of S. tzumu.
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页码：25 / 35
页数：11
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