植物营养与肥料学报2012，Vol.18Issue(5)：1213-1219,7.
施肥和外源砷对小白菜生长和抗性生理的影响
Effects of fertilization and exogenous arsenic on resistance physiology and growth of pak-choi
摘要
Abstract
A pot experiment was conducted to study the effects of different fertilizers and concentrations of arsenic on plant height, root length, fresh weight, As content, proline （Pro.） content, malondialdehyde （MDA） content, and superoxide dismutase （SOD） and peroxidase （POD） activities of pak-choi （Brassica campestris L. ssp. Chinensis L.）. The results show that the arsenic fertilization stimulateds the growth of pak-choi at the concentration of 10 mg/kg under the fertilization treatments, the fresh weight per plant of pak-choi is the highest and the plant height and root length are increased. But the growth of pak-choi is inhibited, as exogenous arsenic concentration is increased. The arsenic contents of pak-choi plant are increased with the increase of the exogenous arsenic concentration, and the fertilization is also increased the content of arsenic in pak-choi plant. The contents of Pro and MDA in pak-choi plant are all increased with the increase of the exogenous arsenic concentration, while those are decreased in fertilization treatments. The activity of POD in pak-choi changes with a pattern of up-down, as exogenous arsenic increased, and is highest at the arsenic concentration of 50 mg/kg in no-fertilizer treatment, and is increased in the fertilization treatments. The activity of SOD in pak-choi is increased, as exogenous arsenic concentration increased in the organic fertilizer treatment, and changes with a pattern of up-down and is highest at the arsenic concentration of 50 mg/kg in the treatments of no-fertilizer, NPK fertilizers, and NPK fertilizers mixed with organic fertilizer.关键词
小白菜/施肥/外源砷/生长/脯氨酸/MDA/POD/SODKey words
Pak-choi fertilization exogenous arsenic growth proline MDA POD SOD分类
农业科技引用本文复制引用
马茹茹,卜玉山,史晓凯..施肥和外源砷对小白菜生长和抗性生理的影响[J].植物营养与肥料学报,2012,18(5):1213-1219,7.基金项目
基金项目：国家“十一五”支撑计划课题资助基金（2007BAD88B03）资助. （）
