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Effect of Different Concentration of NaHCO3 Stress on Seed Germination of Pharbitis purpurea(L.)Voigt(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年11期
Page:
74-76
Research Field:
Publishing date:

Info

Title:
Effect of Different Concentration of NaHCO3 Stress on Seed Germination of Pharbitis purpurea(L.)Voigt
Author(s):
CUI Xing-guo
Department of Life Science,Hengshui University,Hengshui,Hebei 053000
Keywords:
Pharbitis purpurea (L.) Voigt; seed germination; sodium bicarbonate（NaHCO3）; alkaline stress; germination restrain
PACS:
Q 949. 95
DOI:
-
Abstract:
Taking Pharbitis purpurea (L.) Voigt as materials,the effect of different concentration of NaHCO3 （0,2.5,5.0,7.5,10.0,12.5,15.0,20.0 mmol/L）stress on seed germination and its recovery after release from stress were studied.The results showed that disilled water was the best for Pharbitis purpurea (L.) Voigt seed germination.The seed germination rates,germination indexes and germination power decreased when NaHCO3 concentration was 2.5~15.0 mmol/L and the germination rate was 0% at 20 mmol/L.After release from alkaline stress,2.5,5.0,7.5 mmol/L NaHCO3 concentrations seed germination rate for the 7.9%,13.45%,16.9%,its also showed that seed germination could part recovery after release from stress.Germination recovery rate rose with the increasing of pre-treatment alkaline concentrations.But under 10~20 mmol/L,the seed permanent loss germination capability,the germination recovery rate was 0%.

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Last Update: 2014-08-05