Na2CO3胁迫下饲用油菜的生理响应特征
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S548;S565.4

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兵团重大计划项目(2018AA005);兵团科技合作计划项目(2020BC001)


Physiological Response Characteristics of Forage Rapeseed under Na2CO3 Stress
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    摘要:

    研究Na2CO3胁迫下饲用油菜的响应特征,通过设置50、80、150 mmol/L 3个不同Na2CO3浓度梯度,分析饲用油菜在Na2CO3胁迫下生物量,K+、Na+运输,渗透调节物质及其保护酶活性的变化特征。试验表明,随着Na2CO3浓度的增加,饲用油菜的株高、根长、干重、鲜重逐渐降低。饲用油菜植株根和叶中Na+随Na2CO3浓度的增加逐渐增加,茎中K+随Na2CO3浓度的增加逐渐降低。饲用油菜植株渗透调节物质丙二醛、脯氨酸、甜菜碱随Na2CO3浓度的增加均有不同程度的增加趋势;可溶性蛋白和总糖随着Na2CO3浓度的增加逐渐降低。饲用油菜植株中过氧化氢酶、过氧化物酶、超氧化物歧化酶由于Na2CO3胁迫的影响,酶系统平衡状态紊乱,叶片受损。由此可知,Na2CO3胁迫下饲用油菜可通过增加甜菜碱的含量来平衡丙二醛、脯氨酸对其膜系统造成的损伤,同时降低活性氧的量以维持保护酶系统稳定。

    Abstract:

    The response characteristics of forage rapeseed under Na2CO3 stress were studied. The variation characteristics of biomass, K+, Na+ transport, osmotic regulatory substances and protective enzyme activities of rapeseed under Na2CO3 stress were analyzed by setting the concentration gradients of 50, 80, 150 mmol/L of Na2CO3.The results showed that: With the increase of Na2CO3 concentration, the biomass of rapeseed decreased gradually. Na+ in roots and leaves increased gradually with the increase of Na2CO3 concentration, while K+ in stems decreased gradually with the increase of Na2CO3 concentration. Under the stress of Na2CO3, feeding rapeseed could balance the damage caused by malondialdehyde and proline to its membrane system by increasing the content of betaine, and meanwhile reduce the amount of reactive oxygen to maintain the stability of protective enzyme system.

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杨洋,王亚娟,阴法庭,张凤华. Na2CO3胁迫下饲用油菜的生理响应特征[J].东北农业科学,2023,48(2):126-131.

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  • 收稿日期:2020-03-19
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  • 在线发布日期: 2024-10-24
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