Evaluation of cold tolerance in wheat (Triticum aestivum L.)

پژوهشهای زراعی ایران

Article 12, Volume 5, Issue 1 - Serial Number 9, 2007, Pages 107-120   

Document Type: Research Article

DOI: 10.22067/gsc.v5i1.902

Authors

H Azizi^* ; A Nezami; M Nasiri mahalati; H. R Khazaei

Ferdowsi University of Mashhad

Abstract

In order to determine freezing tolerance of 14 wheat cultivars including Anza, Bezostaja, Pishtaz, Tous, Zagros, Zarrin, Shahryar, Falat, Qods, Glenson, Maron, Navid, Niknejad and MV-17 that were grown on field, samples of each cultivar after hardening in the field were harvested in 4-6 leave stages and trimmed to 2cm above and below the crowns and put on the thermogradient freezer. After freezing in the range of 0 to -20 oC, samples were transferred to the greenhouse and planted in the pots. Survival percentage, height, leaf area, chlorophyll content, dry weight, LT50 and DMT50 were determined after 3 weeks. Survival percentage after freezing was different in cultivars (P