ACTA AGRICULTURAE BOREALI-SINICA ›› 2008, Vol. 23 ›› Issue (4): 157-162. doi: 10.7668/hbnxb.2008.04.036

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Responses of Physiological Characteristics of E. intermedia at Seedling Stage under NaCl Stress

SHANG Chun-yan1,2, ZHANG Guo-fang1, MAO Pei-chun1, MENG Lin1, AN Sha-zhou2   

  1. 1. Beijing Research and Development Center for Grass and Environment,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China;
    2. College of Pratacultural Engineering,Xinjiang Agricultural University,Key Laboratory of Grassland Resources and Ecology of Xinjiang,Urumqi 830052,China
  • Received:2008-01-08 Published:2008-08-28

Abstract: The NaCl stress simulating technology at seedling stage in greenhouse was used for the studies on the ef- fects of salinity and days treatments on physiological characteristics,such as the relative water content(RWC),cell mem- brance permeability(CMP),content of free proline (Pro) and Malondaildehyde (MDA)of 13 germplasm and materials of E.intermedia (Host)Nevski collecting from 12 different countries.The results showed that the RWC was decreased,but the CMP,Pro and MDA were increased when the stress of salinity and days were intensified.According to the correlation and cluster analysis of 4 physiological indexes,13 germplasm and materials of E.intermedia were divided into 3 levels of salt tolerance,e.g. the strong salt tolerance of EI037,EI038,EI043,the weak EI020,EI030,EI041,EI042,EI045,and the medium EI017,EI031,EI044,EI046,EI049.Furthermore,0.9 %of NaCl concentration was considered as the salinity threshold of E.intermedia germplasm at seedling stage based on above 4 physiological indexes,the salinity tolerance rat- ings and livability.

Key words: Elytrigia intermedia (Host)Nevski, Seedling stage, NaCl stress, Physiological responses

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Cite this article

SHANG Chun-yan, ZHANG Guo-fang, MAO Pei-chun, MENG Lin, AN Sha-zhou. Responses of Physiological Characteristics of E. intermedia at Seedling Stage under NaCl Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(4): 157-162. doi: 10.7668/hbnxb.2008.04.036.

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