文献类型：期刊文献

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

作者：Wan, Z. B.[1] Zhu, C. L.[1] Sun, H. G.[1,2] Wang, X. F.[1] Xiong, J.[1]

第一作者：Wan, Z. B.

通信作者：Wan, ZB[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

年份：2017

卷号：41

期号：1

起止页码：25-35

外文期刊名：ALLELOPATHY JOURNAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000412808800002)】；

基金：We thank Dr. Gen Zhang from the Shenzhen Nobel Science and Technology Service Co., Ltd. for the comments on the manuscript. This work was supported by the National Natural Sciences Foundation of China (No. 31400563), the Key Foundation for Young Talents of Educational Committee of Anhui Province (No. gxyqZD2016306), the Natural Science Foundation of Educational Committee of Anhui Province (No. KJ2016A682) and the Key Project of Visiting and Studying Inland and Aboard Program for Young Scholars (No. gxfxZD2016234).

语种：英文

外文关键词：Alcohols; allelochemicals; allelopathic potential; esters; germination; leaf extracts; phenols; Sassafras tzumu; seedling growth; weed

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.