LI Jin-long,JIA Yun-he,LI Yan,et al.Effects of Soil Moisture Content on Growth and Cadmium Accumulation of Phaseolus vularis Linn Under Cadmium Stress[J].HEILONGJIANG AGRICULTURAL SCIENCES,2022,(05):54-59.[doi:10.11942/j.issn1002-2767.2022.05.0054]
土壤含水量对镉胁迫下油豆角生长发育及镉积累的影响
- Title:
- Effects of Soil Moisture Content on Growth and Cadmium Accumulation of Phaseolus vularis Linn Under Cadmium Stress
- Keywords:
- soil moisture content; cadmium stress; snap beans; growth and development; cadmium accumulation
- 文献标志码:
- A
- 摘要:
- 为改善镉胁迫下保护地油豆角品质,降低重金属镉在油豆角内的积累量,以黑龙江省主栽油豆角品种“将军”为供试材料,采用盆栽试验方式,模拟在1.5 mg·kg-1镉胁迫下,调查不同土壤含水量对油豆角植株高度、主茎粗度、单株产量、可溶性糖含量、维生素C含量,叶片中超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性、过氧化氢酶(CAT)活性,丙二醛(MDA)含量、脯氨酸(Pro)含量、可溶性蛋白质(Pr)含量,以及植株各部分镉含量等指标的影响。结果表明:土壤含水量在80%~90%时,以上各指标均优于其他处理,可溶性糖、维生素C、可溶性蛋白质含量增加,丙二醛、脯氨酸含量降低,抗氧化酶活性均显著低于对照和其他处理,且叶片、果实、根部的镉含量均最低。表明,适当漫灌能够改善隔胁迫下油豆角的生长发育。
- Abstract:
- In order to improve the quality of snap beans under cadmium stress and reduce the accumulation of heavy metal cadmium in snap beans,taking the main snap beans variety “General” in Heilongjiang Province as the test material,a pot experiment was conducted to simulate the effects of different soil moisture content on plant height,main stem diameter,single plant yield,soluble sugar content and vitamin C content under cadmium stress of 1.5 mg·kg-1,superoxide dismutase(SOD)activity,peroxidase(POD)activity,catalase(CAT)activity,malondialdehyde(MDA)content,proline(Pro)content,soluble protein(Pr)content,and cadmium content in various parts of plants.The results showed that when the soil moisture content was 80%-90%,the above indexes of snap beans were better than other treatments.The contents of soluble sugar,vitamin C and soluble protein increased,the contents of malondialdehyde and proline decreased,the activities of antioxidant enzymes were significantly lower than those of the control and other treatments,and the cadmium content in leaves,fruits and roots were the lowest.Therefore,appropriate flooding can improve the growth and development of snap beans under cadmium stress.
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备注/Memo
收稿日期:2022-01-14
基金项目:黑龙江省农业科学院“农业科技创新跨越工程”专项 (HNK2019CX10-12)。
第一作者:李金龙(1986-),男,硕士,助理研究员,从事蔬菜种质资源收集、保存及利用研究。E-mail:lijinlong537@126.com。
通信作者:刘思宇(1983-),女,硕士,副研究员,从事蔬菜品种资源以及油豆角新品种选育研究。E-mail:liusiyu79@163.com。