Variations in chlorophylls, carotenoids, protein, and secondary metabolites amongst ginger (Zingiber officinaleRose.) cultivars and their association with rhizome yield

摘要

Chlorophylla, b, a:b,carotenoid, carbohydrates, sugar, protein, and polyphenol content were estimated and their association with rhizome yield compared in 10 cultivars of ginger (Zingiber officinaleRose). The analyses indicated significant differences amongst the cultivars for all the studied parameters. The highest fresh rhizome yield (462.6 g/plant) was recorded in #x2018;Gorubathaney#x2019; and the lowest (234.5 g/plant) in #x2018;Suprava#x2019;. Higher rhizome yields were highly associated with grater chlorophyllaand carbohydrate (r= 0.52 and 0.60 respectively) and lower polyphenol (r =#x2010;0.15) levels in the leaf. The protein content in the leaves of ginger showed significant correlation with carbohydrates and chlorophylla:bratio (r = 0.55 andr =0.76 respectively). The chlorophylla:bratio also showed highly positive correlation with carbohydrate content (r = 0.92) of leaf. However, polyphenols showed a significant positive correlation with chlorophyllband carotenoids and carotenoids with chlorophyllaand chlorophyllb.