اثر پیری تسریع شده بر شاخص های جوانه زنی لاین های امید بخش کلزا (.Brasica napus L)

Accelerated aging test to estimate the percentage of emergence are designed to lay the seeds for life, as well as an indicator to determine the power of the seed used. In this study, the effects of aging zero (control), 2, 4 and 6 days on germination index of rapeseed genotypes including Okapi, R15, BAL11, L109, BAL2 Were detected in a factorial experiment based on completely randomized design with four replications. The results showed that the effect of accelerated aging on germination of genotypes was significant at p<0.01 probability level. Interaction effects of accelerated aging and genotypes indicated that line L109 in 0 and two days old had 98% and 75% germinations, respectively.­ Line L109 with vigor index 4.28% and 4.21% compared to treatment with two days of the accelerated aging with the highest average with 2.57 and 1.51 had the lowest percentage of line R15 and six treatments day was accelerated aging. Yielded the interaction of accelerated aging (p<0.05) on mean daily germination was significant. The average stem length of the interaction lines L109 and two days old by 3.6 cm compared with the control. The lowest root length in lines R15 and six days old, was seen by 3.5 cm. Evaluation of the final tests showed that the seed germination of canola cultivars that have strong vigor had were less affected accelerated aging tests and whatever vigor is poor, are more sensitive to this stresses.