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Acta Prataculturae Sinica ›› 2009, Vol. 18 ›› Issue (4): 67-74.

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A comprehensive evaluation of salt tolerance for germplasm and materials of Elytrigia at the seedling stage

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

  1. 1.Beijing Research and Development Center for Grasses and Environment, Beijing Academy of Agriculture
    and Forestry Sciences, Beijing 100097, China; 2.College of Pratacultural and Environmental Science,
    Xinjiang Agricultural University, Key Laboratory of Grassland Resources
    and Ecology of Xinjiang, Urumqi 830052, China
  • Received:2008-09-08 Online:2009-08-20 Published:2009-08-20

Abstract: Simulating salinity stress in a green house was used to study the relative water content(RWC), relative electrical conductivity rate(EC),content of free proline(Pro), K+/Na+, changes of relative growth rate, the salt-tolerant coefficient, the livability and time of salinity injury to death of Elytrigia. Materials of 34 germplasms and 8 species of Elytrigia collected from 21 countries were measured and analyzed at the seedling stage, and the salt tolerances were comprehensively evaluated. Eight indexes were all effective for evaluation of salt tolerance of germ plasm and materials of Elytrigia at seedling stage. Cluster analysis of salt tolerant indexes showed the 34 germ plasms and materials could be divided into three salt tolerant levels, e.g. strong (ER030, ER035, ER041, EE011, EE014, EE017, EE023, EE026, EE047, EH001, EH002, EPU02), medium (ER008, ER014, ER027, ER032, ER037, ER038, ER044, ER045, EE007, EE027, EJ001, EPO02, EPO03, EPO04), and the weaker (ER028, ER033, ER036, ER039, EE022, EJ003, EL001, EI022).

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