بررسي اثر فرسودگي بذر (پيري تسريع شده) بر جوانه زني و رشد گياهچه ي ارقام گندم در شرايط آزمايشگاه

Study the effect of aging acceleration test on germination and seedling growth of wheat cultivars in controlled conditions (in vitro).

In order to study the effect of aging acceleration test on seed germination and seedling growth of wheat cultivars an experiment was done based on a randomized complete block design with 3 repetitions in 2 media (aging and normal)using combined analysis of variance during 2008-2009 in laboratory of seed control and certification department in Agricultural Research Center,Safiabad ,Dezful.Factors were best selected wheat cultivars (chamran, veerynak, dez, kavir, chenab, zagrous, star, behrang, dena and karkhe). All cultivars incubated in incubator (temperature, 45°C; humidity, 100%) for 72 hours to quicken aging. Dena, karkhe and behrang belonged to durum species and the other ones were subspecies of bread wheat. Results showed that there were significant effect of cultivar ,medium and as well as interaction of them on germination percentage and germination rate at 1% probability ,the other traits were significant at 1% and 5% probability .Among cultivars.zagrous revealed the highest germination percentage (92%) and star cultivar showed the highest germination rate with 75%,and these results, are because of vigor and high quality of these cultivars in aging medium.There were not signicant differences between chamran, veerynak and star cultivares in germination percentage when grown in normal medium. Finally results indicated that there were a positive significant correlation between germination percentage and seed yield at 1% probability.