Effect of salt, gibberellin and ascorbate on germination growth and anti oxidant system in Barely (Hordeum vulgare L.) seedling

Subject Areas : Genetic

مریم Niakan ¹ , وحیده Rashidzadeh ² , عباسعلی Norinia, A ³

1 - Islamic Azad University, Gorgan Branch, Iran
2 - Islamic Azad University, Gorgan Branch, Iran
3 - Agricultural and Natural Research Center of Golestan Province, Gorgan-Iran

Received: 2008-07-23 Accepted : 2008-12-11 Published : 2009-06-15

Keywords: growth, antioxidant enzyme, salt, Phenolic, Gibberellin, Ascorbate, Compounds, Hordeum Vulgare L,

Abstract :

In different stress such as salinity, strong oxidant as reactive oxygen species is produced that damages to membrane structure in plant. Different antioxidant as ascorbate scavenger them. Between hormone, gibberellic acid has different roles that depend to king of gibberellin, density and plant space. In this research Hordeum (4222) treated to ascorbate (1mm), gibberellin (200 and 400ppm) and NaCl (150, 350mm) and the effect of them on germination percentage, radicle lenght and antioxidant enzymes such as catalase, peroxidase,poly phenol oxidase, ascorbate peroxidase and phenolic compounds was evaluated. The result of this research showed that in present of NaCl germination decreased but in NaCl and Ascorbate and Gibberellin germination and radicle length increased significanty. Also in absence of ascorbate and gibberellin and present of NaCl activity of catalase, peroxidase decreased but activity of poly phenoloxidase and ascorbate peroxidase increased. Also NaCl cause decreased phenolic compounds in barley seedling but by increasing ascorbate and gibberellin the content of them increased.

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