Screening of a Number 8 Rape Flower Cultivars Based on the Accumulat Osmoticum to Salt Tolerance
Habibeh Zare¹ and Habib Nazem²1Department of Biology Payame Noor University (PNU) Iran.
²Department of Biology Shiraz University
Abstract:
Sodium chloride at 100 and 200 mM reduced seedling growth in sensitive cultivar more than tolerance one. Ascorbate peroxidase activity in shoots decreased in tolerance but increased in sensitive cultivar.increasing NaCl concentration , first decreased guaicol peroxidase activity in both cultivars but increased afterward.proline content increased at 200 mM NaCl but the differences between the two cultivars were not significant.soluble sugars decreased in both cultivars. Sodium absorption increasing in both cultivars with increase in NaCl and decrease in KCl, but sensitive cultivar absorbed more sodium than tolerant cultivar. In contrast ,under the same conditions ,tolerant cultivar absorbed more potassium than sensitive cultivar.
Keywords: Rap flower;salt stress;tolerance mechanism (proline;Antioxidant enzyme and soluble sugars) Back to TOC