تعيين نياز بهاره سازي ارقام گندم ديم سرداري و سبلان

Determination of vernalization requirement in Sardary and Sabalan dryland wheat cultivars

In order to investigation and determination of vernalization requirement in seedling and soaked seed of two dryland wheat cultivars (Sardary and Sabalan), this experiment was conducted in 2000 at the greenhouse of Agicultural college, Ferdowsi university of Mashhad. Treatments included lenght of vernalization period (in 7 level:17, 30, 40, 49, 60 and 70 days in 3°C) and vernalization status (soaked seed or seedling) were studied as a factorial experiment in a Randomized compelete design with three replications. Results showed that floral induction of Sardary and Sabalan require 17 and 30 days as a vernalization period respectively. After that, increasing of vernalization period to 40 and 49 days (for Sardary and Sabalan respectively) caused compeletion of vernalization requirement and decrease of days to heading (in main stem and tillers). Vernalization requirement of Sardary not only was less than Sabalan(40 vs. 49 days) but also its response to vernalization was more quantitative in comparison with Sabalan. Increasing of vernalization period also increased tiller number of Sabalan but had no effect on tiller number of Sardary. Results showed that vernalized soaked seed or seedling have a similar developmental rate.