Accelerated aging is a common method for seed vigor testing,but the outcome differs with different species.In this study nine seed lots of common vetch (Vicia sativa) were assessed;seeds were aged at 100％ relative humidity at 41,43 and 45 ℃ for 12,24,36,48,60 and 72 h,respectively.An optimal accelerated aging condition was selected by analyzing germination ％ and rate of germination.Results indicated that aging temperature,time and their interaction showed significant differences for germination ％ and germination rate (P＜0.01).With increasing temperature and time germination ％ gradually declined.Germination ％ decreased significantly after aging for 48 h (P＜0.05) (except for seed lot 6).The germination rate increased firstly and then decreased after 24 h.Correlation analysis showed that the effects of aging time on germination ％ and germination rate were greater than that of temperature.Aging seed for at 41 ℃ for 60 hours was able to separate the seed lots into groups of 8 or 6 based on germination ％ and germination rate,respectively (P＜0.05).We concluded that aging at 41 ℃ for 60 h was the optimal condition for accelerated age testing of common vetch.
common vetchseed vigoraccelerated agingaging temperatureaging time
国家科技期刊平台
NSTL
万方数据
维普
