[1]SUN Bin,CHEN Wei-feng.Effect of Gibberellin on the Seed Germination and Seedling Growth of Puccinellia distans Under Salt-stress[J].Research of Soil and Water Conservation,2014,21(06):30-34.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 06
Page number:
30-34
Column:
Public date:
2014-12-28
- Title:
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Effect of Gibberellin on the Seed Germination and Seedling Growth of Puccinellia distans Under Salt-stress
- Author(s):
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SUN Bin, CHEN Wei-feng
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College of Resources and Environment, Shandong Agricultural University, Taian, Shandong 271018, China
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- Keywords:
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pratacultural science; salt stress; Puccinellia distans; gibberellic acid; salt resistance
- CLC:
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S143.8
- DOI:
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- Abstract:
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The Puccinellia distans seeds were treated with different gibberellin concentrations (8,15,20,25,50 mg/L) under the NaCl salt stress (100 mmol/L) in analogue experiments so as to study the influence on their seed germination and seedling growth. The results showed that:(1) 100 mmol/L NaCl significantly inhibited the seed germination and seedling growth, germination percentage, germination energy, germination index, root length and grass height significantly reduced, root activity, peroxidase activity and index of salinity tolerance were significantly inhibited, too; (2) during the range of 8~20 mg/L all the index data were improved; (3) but the promoting effect had fallen obviously when the the concentration of gibberellin is more than 20 mg/L.When the concentration of gibberellin is 50 mg/L, the seed germination and the ratio of Puccinellia distans roots and stems were lower than control sample, depression effect of gibberellin was obvious. Therefore, different concentrations of gibberellin have different promoting effects. The best promoting effect of gibberellin was found at the concentration of 20 mg/L.