Research on the Root Physiological Characteristics of Medicago sativa L.Seedling Under Salt Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2014年05期

Page:

68-72

Research Field:

Publishing date:

Info

Title:

Research on the Root Physiological Characteristics of Medicago sativa L.Seedling Under Salt Stress

Author(s):

JIANG Chao¹; XIA Yang²; YANG Ke-qiang¹

1.College of Forestry，Shandong Agricultural University，Tai’an，Shandong 272100；

2.Shandong Academy of Forestry，Jinan，Shandong 250000

Keywords:

Medicago sativa L.; salt resistance; root; physiological characteristics

PACS:

S 551+.7

DOI:

-

Abstract:

Taking two cultivars of Medicago sativa L. ‘Algonquin’ (salt resistance) and ‘Crown’ (salt susceptible) as materials,under hydroponic conditions，effect of root activity and malonaldehyde content,proline content,soluble protein content under different NaCl concentration (0,100，200 mmol/L NaCl) and stress time(0，2，4,6,8,10,12 d) of two cultivars of Medicago sativa L.seedlings were measured，the changes of related physiological indicators were analysed.The results showed that with the increase of stress salinity and the number of days，the root activity of Medicago sativa L. presented significant decreasing trend,the root physiological indicators containing malonaldehyde content,proline content,soluble protein content showed significantly trend of first increased and then decreased，but increasing trend of high salinity was significantly bigger than increasing trend of low salinity.The principal component analysis showed that proline and soluble protein could be better representative of the salt patience of Medicago sativa L..

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