Effect of Seed Pre-sowing Treatment on Germination of Sweet potato
Publication Date : 02/10/2017
Sweet potato is an herbaceous, perennial plant belonging to the Convolvulaceae family with a critical role in the global food system, particularly in the developing world, where they rank among the top 10 food crops. Germination of sweet potato seeds is difficult due to thick, very hard and impermeable testa. In order to study the germination rate, seeds were exposed to different treatments such as effect of gibberellic acid, water and acid treatment along with control. The seeds were soaked in water for 24 hrs, 48 hrs, different concentration of GA3 (50, 100 and 250 ppm) at different time intervals (10, 30, 60 minutes) and acid scarification (sulphuric acid) of seeds for 5, 10 and 15 minutes. All the 15 treatments along with the control were kept for germination in moist petriplate in dark and allowed to germinate. The rate of seed germination was recorded every day and after 5 days maximum seed germination was observed in acid treatment 75-80 % followed by 50 ppm GA3 for 30 and 10 minutes. From the result it was concluded that the acid treated seeds showed maximum seed germination when compared to other treatments.
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