[1]王羲玥,任艳芳,王伟,等.快菜不同生长期对镉毒害的敏感性差异[J].北方园艺,2019,43(24):14-20.[doi:10.11937/bfyy.20191989]
　WANG Xiyue,REN Yanfang,WANG Wei,et al.Sensitivity of Brassica chinensis L. at Different Growth Stages to Cadmium Toxicity[J].Northern Horticulture,2019,43(24):14-20.[doi:10.11937/bfyy.20191989]
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快菜不同生长期对镉毒害的敏感性差异

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 43卷 期数: 2019年24 页码: 14-20 栏目: 出版日期: 2019-12-30
Title:
Sensitivity of Brassica chinensis L. at Different Growth Stages to Cadmium Toxicity
作者:
王羲玥1; 任艳芳1; 2; 王伟1; 张陆云1; 崔志文1; 何俊瑜1
（1.常州大学 环境与安全工程学院，江苏 常州 213164；2.贵州大学 农学院，贵州 贵阳 550025）
Author(s):
WANG Xiyue1; REN Yanfang1; 2; WANG Wei1; ZHANG Luyun1; CUI Zhiwen1; HE Junyu1
(1.School of Environmental and Safety Engineering，Changzhou University，Changzhou，Jiangsu 213164；2.College of Agriculture，Guizhou University，Guiyang，Guizhou 550025)
关键词:
快菜; 镉胁迫; 萌发期; 幼苗期; 敏感性
Keywords:
Brassica chinensis L.; cadmium stress; germination stage; seedling stage; sensitivity
DOI:
10.11937/bfyy.20191989
文献标志码:
A
摘要:
以厚叶养生快菜为试材，采用水培的方法，研究了快菜种子萌发期和幼苗期对镉（Cd）毒害的敏感性差异。结果表明：50~400 μmol?L-1 Cd胁迫对快菜种子发芽率、发芽势和发芽指数无明显抑制作用，但不同浓度Cd胁迫下快菜根长和活力指数显著下降。5~160 μmol?L-1 Cd处理下快菜幼苗的总叶面积、地上部和地下部干质量和鲜质量均受到明显抑制。表明快菜幼苗期比萌发期对Cd毒害更敏感，其中快菜幼苗的根干质量对Cd胁迫的响应比其它指标更为敏感，其EC10、EC20和 EC50值分别为0.03、0.26、13.03 μmol?L-1，可作为快菜对Cd毒害敏感性的筛选指标。
Abstract:
Using Brassica chinensis L.cv Houyeyangsheng as the test material，the sensitive difference of cadmium toxicity between seed germination stage and seedling stage was studied by hydroponics.The results showed that 50-400 μmol?L-1 Cd stress had no significant inhibitory effect on seed germination rate，germination potential and germination index，but the radicle length and vigor index of Brassica chinensis L. decreased significantly under different concentrations of Cd stress.The total leaf area，dry weight and fresh weight of shoots and roots of Brassica chinensis L. seedlings were significantly inhibited under 5-160 μmol?L-1 Cd treatment.The results showed that Brassica chinensis L. at seedling stage was more sensitive to Cd toxicity than that at germination stage.Root dry weight of Brassica chinensis L. seedlings was more sensitive to Cd stress than other indicators，EC10,EC20 and EC50 values were 0.03，0.26，13.03 μmol?L-1，which could be used as a screening index for sensitivity of Brassica chinensis L. to Cd toxicity.

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备注/Memo

第一作者简介：王羲玥（1994-），女，硕士研究生，研究方向为重金属污染机理与治理。E-mail:332036906@qq.com.责任作者：任艳芳（1976-），女，博士，教授，现主要从事农产品质量与安全评价和土壤重金属污染生理生态等研究工作。E-mail:yanfangren@126.com.基金项目：国家自然科学基金资助项目(31660477，31460100)；贵州省科技计划资助项目（黔科合平台人才[2017]5788号）；常州大学人才引进资助项目（201710，201709）。收稿日期：2019-08-03

更新日期/Last Update: 2019-12-30