首页|钙离子及其抑制剂对盐胁迫下黄瓜幼苗形态建成的影响

钙离子及其抑制剂对盐胁迫下黄瓜幼苗形态建成的影响

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以"滇翠8号"黄瓜为试材,通过施加75 mmol·L-1 NaCl进行盐胁迫,外源施加不同浓度的EGTA、LaCl3、CaCl2、Ca(NO3)2,采用温室大棚栽培方法,研究了外源施加Ca2+对盐胁迫下黄瓜幼苗叶片和根系的形态、生理指标的影响,以期为缓解土壤盐分胁迫对黄瓜等蔬菜栽培的危害提供参考依据.结果表明:在盐胁迫下,黄瓜幼苗的株高、根长、茎粗等均受到不同程度的抑制,施加浓度为4.0 mmol·L-1的Ca2+抑制剂(LaCl3和EGTA)对黄瓜幼苗的生长抑制显著,同时降低抗氧化酶系统的活性,增强盐胁迫的危害;而施加5.0 mmol·L-1的CaCl2和Ca(NO3)2能够缓解盐胁迫,促进黄瓜幼苗的生长,且显著降低丙二醛和脯氨酸含量,激活并加强抗氧化酶(过氧化物酶、超氧化物歧化酶)的活性.
Effects of Calcium Ions and Their Inhibitors on the Morphogenesis of Cucumber Seedlings Under Salt Stress
Taking cucumber'Diancui 8'as the test material,treatment was carried out by applying 75 mmol·L-1NaCl and exogenous application of different concentrations of EGTA,LaCl3,CaCl2,Ca(NO3)2.The effects of exogenous application of Ca2+on the morphology and physiological indicators of cucumber seedling leaves and roots under salt stress were studied,in order to provide reference for alleviating the harm of soil salt stress on cucumber and other vegetable cultivation.The results showed that under salt stress,the plant height,root length,and stem diameter of cucumber seedlings were inhibited to varying degrees.The application of Ca2+inhibitors(LaCl3 and EGTA)with a concentration of 4.0 mmol·L-1significantly inhibited the growth of cucumber seedlings,while reducing the activity of antioxidant enzyme systems and increasing the harm of salt stress.Applying 5.0 mmol·L-1 of CaCl2 and Ca(NO3)2 could alleviate salt stress,promote the growth of cucumber seedlings,significantly reduce the content of malondialdehyde and proline,activate and strengthen the activity of antioxidant enzyme(peroxidase,superoxide dismutase).

cucumberseedlingssalt stressCa2+Ca2+inhibitorsmorphogenesis

赵文麟、张新梅、梁飞飞、张国平、许俊强、李振林

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云南农业大学 云南省滇台特色农业产业化工程研究中心,云南 昆明 650201

云南农业大学园林园艺学院,云南省蔬菜生物学重点实验室,云南昆明 650201

黄瓜 幼苗 盐胁迫 Ca2+ Ca2+抑制剂 形态建成

云南省农业联合专项云南省基础研究计划云南省科技重大专项云南省科技人才和平台计划云南省科技人才和平台计划云南省教育厅科研项目

202101BD070001-115202201AT070502202402AE090012202205AF150017202205AF1500212024Y300

2024

北方园艺
黑龙江省农业科学院 黑龙江省园艺学会 黑龙江省农业科学院编辑出版中心

北方园艺

CSTPCD北大核心
影响因子:0.506
ISSN:1001-0009
年,卷(期):2024.(16)
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