热带作物学报2012，Vol.33Issue(4)：642-645,4.DOI:10.3969/j.issn.1000-2561.2012.04.011
CaCl2对盐胁迫下小白菜生长和相关生理特性的影响
Effects of CaCl2 on the Growth and the Mechanism in Brassica campestris ssp.chinensis L.under the Salt Stress
摘要
Abstract
The effects of different concentrations(0, 5, 10, 20, 30 mmol/L)of CaCl2 on the growth, physiological and biochemical characteristics of pakchoi(Brassica campestru ssp. chinensis L)under salt stress were studied by the methods of root injection and foliar spray with CaCl2. The results showed that 10 mmol/L CaCl2 significantly increased the plant height, plant dry weight, fresh weight, water content and the number of expanding leaves, decreased the malondialdehyde(MDA)content, enhanced the leaf superoxide dismutase(SOD), peroxidase (POD) enzyme activities, and significantly increased the photosynthetic pigment content and net photosynthetic rate of pakchoi leaves under the salt stress.The above analysis showed that the suitable concentration of exogenous calcium could ease the damage of NaCl stress on pakchoi by enchacing the capacity of osmotic adjustment, antioxidant capacity, protecting the structure and function of membrane, enhancing photosynthesis.关键词
小白菜/CaCl2/盐胁迫/生理特性Key words
Brassica canpestris ssp. chinensis L./CaCl2, Salt stress/Physiological characteristics分类
农业科技引用本文复制引用
徐芬芬..CaCl2对盐胁迫下小白菜生长和相关生理特性的影响[J].热带作物学报,2012,33(4):642-645,4.基金项目
江西省教育厅2010年度科技项目(No.GJJ10255) （No.GJJ10255）
上饶师范学院2010年科技项目(No.201009). （No.201009）
