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丛枝菌根真菌和磷对干旱胁迫下紫花苜蓿幼苗生长与生理特征的影响

林子然, 张英俊

林子然, 张英俊. 丛枝菌根真菌和磷对干旱胁迫下紫花苜蓿幼苗生长与生理特征的影响[J]. 草业科学, 2018, 12(1): 115-122. DOI: 10.11829/j.issn.1001-0629.2017-0158
引用本文: 林子然, 张英俊. 丛枝菌根真菌和磷对干旱胁迫下紫花苜蓿幼苗生长与生理特征的影响[J]. 草业科学, 2018, 12(1): 115-122. DOI: 10.11829/j.issn.1001-0629.2017-0158
Zi-ran Lin, Ying-jun Zhang. Effect of arbuscular mycorrhizal fungi and phosphorus on growth and physiological properties of alfalfa seedlings under drought stress[J]. Pratacultural Science, 2018, 12(1): 115-122. DOI: 10.11829/j.issn.1001-0629.2017-0158
Citation: Zi-ran Lin, Ying-jun Zhang. Effect of arbuscular mycorrhizal fungi and phosphorus on growth and physiological properties of alfalfa seedlings under drought stress[J]. Pratacultural Science, 2018, 12(1): 115-122. DOI: 10.11829/j.issn.1001-0629.2017-0158

丛枝菌根真菌和磷对干旱胁迫下紫花苜蓿幼苗生长与生理特征的影响

基金项目: 

国家牧草产业技术体系(CARS-35)

摘要: 丛枝菌根真菌(AMF)是一种存在于生态系统中重要的土壤微生物,广泛应用于植物的防旱、抗旱。本研究选用紫花苜蓿(Medicago sativa)为试验材料,分别研究了接种丛枝菌根真菌、磷和水分对其生物量、株高、脯氨酸和丙二醛含量的影响。结果表明,磷浓度变化对紫花苜蓿生长发育状况影响不显著,而接种AMF后可大幅度改善紫花苜蓿的抗旱性能。其中,水分充足(即田间持水量75%~80%)条件下紫花苜蓿生长状况最好;随着水分降低,紫花苜蓿生物量与株高显著下降,脯氨酸、丙二醛含量增加,酶活性下降。接种AMF对紫花苜蓿的生长状况以及相关生理生化指标均有显著改善作用。综合接种AMF和磷处理结果显示,施加0.25 mmol·L-1 KH2PO4 Hogland营养液并接种AMF的试验组抗旱效果最好,说明在干旱胁迫下,一定施磷水平下接种AMF可有效地提高紫花苜蓿的抗旱性。

 

English

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  • 收稿日期:  2017-03-29
  • 发布日期:  2018-01-19

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