Influence of Gibberellic acid and Sulphur on Glycosides and Phenolics of Onion Bulbs (Allium cepa L.).

The present study was carried out during 2008–09 in Rabi season at Students Instructional Farm of N.D.U.A.&T., Kumarganj, Faizabad in order to study the effect of gibberellic acid viz. 0, 20, 40 and 80 ppm and sulphur @ 0, 10, 20 and 40 kg/ha on physic-chemical quality of onion bulbs variety Pusa Red. The maximum anthocyanin 9.72 mg/100g, ascorbic acid 12.85 mg/100g, total phenol 187.49 mg/100g, total sugar 5.52%, ally propyl disulphide 6.49 mg/100g and TSS 11.93% were recorded with the application of gibberellic acid @ 80 ppmrecorded with the application of 40 kg S/ha. While the minimum was recorded in control. The highest sugar 5.61% was recorded in control. In general application of gibberellic acid and basal application of sulphur improved the physico-chemical character in onion bulbs.