المعاملة الملحية المسبقة للبذور بكلوريد الصوديوم وأثرها في التحمل الملحي لبادرات نبات الحنطةTriticum aestivum L. صنف تموز 2000

Abstract

A Laboratory experiment was conducted using water culture with Hoagland's nutrient solution to study the salinity tolerance of wheat (Ttriticum aestivum L.) cv. (Tamuz 2000). Seeds of wheat were treated for (24h.) with (0.25%) NaCl (seeds pretreatment) leaving other amount of seeds without salt treatment as a control. After seedlings emergence, NaCl at concentrations of (0, 0.5, 1, 1.5 %) were added to Hoagland's nutrient solution for (14) days, leaving seedlings with free NaCl Hoagland's solution as a control. Results indicated as NaCl concentration increased in the nutrient solution length and fresh weight of shoot and root and K concentration decreased while there were an increase in Na+, proline and total soluble carbohydrates in shoot and root. Results showed that seedlings from pretreated seeds with NaCl were more tolerant to salinity according to the significant increase in shoot and root length and fresh weight, K+/Na+ ratio, proline and total soluble carbohydrates concentrations compared with that developed by untreated seeds.