热带作物学报2017，Vol.38Issue(6)：1069-1074,6.DOI:10.3969/j.issn.1000-2561.2017.06.014
钙对非洲凤仙铅累积特性的影响
The Effect of Calcium on the Content of Lead in Impatiens walleriana
摘要
Abstract
The effect of Ca on Pb tolerance and Pb concentrations in Impatiens walleriana under Pb stress were studied.It showed that Pb inhibited the growth of I.walleriana and the biomass of the seedling decreased with the increase of Pb treatment concentrations.And Pb concentrations in the root and leaf increased with the increase of Pb treatment concentrations.Pb concentrations in organs were 10-250 mg/kg under Pb ≥100 mg/L treatment concentrations.The inhibition of Pb was aggravated after Ca pretreatment in 50,100 and 300 mg/L Pb treatment.The effect of Ca on Pb concentrations in organs varied with Pb treatment concentrations.Ca significantly increased Pb concentrations in roots in 50 and 100 mg/L Pb treatment and inhibited Pb concentrations in roots in 300 and 600 mg/L Pb treatment.Ca significantly decreased Pb concentrations in the overground parts in 100 and 300 mg/L Pb treatment.In 100 mg/L Pb treatment,the availability of Pb in the root and leaf significantly dropped and the Pb transfer was reduced by Ca.So that Pb tolerance in L walleriana was high and L walleriana was a Pb accumulator and not a Pb hyperaccumulator;Ca alleviated the toxin of Pb in L walleriana under 50,100 and 300 mg/L Pb treatment that was related to the reduce of Pb content in above ground organs and lower availability of Pb in seedling of L walleriana.关键词
非洲凤仙/铅/钙/铅耐性/铅累积特性Key words
Impatiens walleriana/lead/calcium/lead tolerance/accumulation of lead分类
农业科技引用本文复制引用
张琼,陆銮眉,戴清霞,朱丽霞,卓彩凤..钙对非洲凤仙铅累积特性的影响[J].热带作物学报,2017,38(6):1069-1074,6.基金项目
福建省科技厅自然科学基金青年创新基金(No.2016J05084) （No.2016J05084）
福建省教育厅中青年教师教育科研项目(No.JA15322) （No.JA15322）
漳州市科技局自然基金(No.ZZ2016J01) （No.ZZ2016J01）
校级博士科研启动项目(No.2006L21432). （No.2006L21432）
