[1]DUAN Hui-rong,LI Yi,MA Yan-jun.Effects of PEG Stress on Seed Germination of Ammopiptanthus mongolicus[J].Research of Soil and Water Conservation,2011,18(03):221-225.
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Effects of PEG Stress on Seed Germination of Ammopiptanthus mongolicus
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
18
Number of periods:
2011 03
Page number:
221-225
Column:
Public date:
2011-06-20
- Title:
- Effects of PEG Stress on Seed Germination of Ammopiptanthus mongolicus
- Keywords:
- Ammopiptanthus mongolicus; PEG stress; seed germination
- CLC:
- S793.01
- DOI:
- -
- Abstract:
- The effects on seed germination of Ammopiptanthus mongolicus and the change law of soluble protein,proline,MDA,SOD,POD,CAT of seedlings were discussed.5 different polyethylene glycol(PEG) mass concentrations from 5% to 25% were designed in this study by stimulating drought stress and the osmotic potentials in soil were －0.054MPa,－0.177MPa,－0.393MPa,－0.735MPa,－1.25MPa.The results showed that the germination rate of Ammopiptanthus mongolicus seeds decreased with increase of PEG concentration,while the death rate increased,and the fresh weights of seedlings decreased by different degrees.The relative electrical conductivity and the MDA content were consistantly rising.The chang of soluble protein content and proline content were similar,all first increased(5%～15%) then decreased(20% and 25%).When treated with 15% PEG,the seedlings were influenced and when PEG concentration was more than 20%,the seedlings were severely influenced.
- References:
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