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ThesisItem Open Access Evaluation of onion (Allium cepa L.) genotypes for growth, yield and shelf life(CCSHAU, Hisar, 2019-11) Hitesh Kumar; Dhankhar, S K;The aim of this study was to evaluate of ten onion (Allium cepa L.) genotypes for growth, yield and shelf life parameters at research farm of department of vegetable science and phytochemicals study was observed in laboratory of Department of Biochemistry, CCS, Haryana Agricultural University, Hisar. The significant variations were observed for the traits viz., leaf length (cm), leaves per plant, leaf diameter (cm), neck thickness (cm), number of sheath, bulb length (cm), bulb diameter (cm), bulb yield (q/ha), PWL, sprouting, rotting, TSS, total phenolic, total flavonoids, antioxidant activity, ascorbic acid and total anthocyanin were evaluated among the genotypes. Hisar onion-8 and Hisar onion-9 and Hisar onion-11 have best for vigorous growth and bulbs yield among genotypes. Minimum losses were observed in Hisar onion-7 followed by Hisar onion-4 which was best for long term storability among the genotypes. Maximum total phenolic, antioxidant activity, total anthocyanin and ascorbic acid was found in Hisar onion-7 followed by Hisar onion-4, total flavonoids found in Hisar onion-2 followed by Hisar onion-3 while highest TSS content was found in Hisar onion-5 among the genotypes. We have seen the changes of TSS, total phenolic, total flavonoid, antioxidant activity, total anthocyanin and ascorbic acid in bulbs during period of storage. Therefore, the increases in phenolic, antioxidant activity, flavonoids, and TSS content till 60 days of storage, then after started decreased during storage whereas we seen of total anthocyanin and ascorbic acid was decreased from 30 days to120 days of storage in the genotypes.
