Changes in carbohydrate levels and starch/sugar ratio in three turmeric (Curcuma domestica Val.) cultivars grown in monoculture and as an intercrop in coconut garden
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Date
2007-02-08
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Abstract
Seasonal changes in the carbohydrate fractions like starch and total sugars as well as starch/sugar ratio in three turmeric cultivars viz., Cls. No. 24 (C1), CU. 328 Sugandham (C2) and Duggirala (C3) grown in monoculture and as an intercrop in coconut garden were determined. Cultivar Cls. No. 24 showed higher build up of starch in leaves as well as rhizomes when grown as a pure crop than as an intercrop, while for the cultivars Cll. 328 Sugandham and Duggirala this difference between the two cropping systems was not apparent. The stage of maximum rhizome growth rate coincided with a reduction in the starch/sugar ratio in leaves, the reduction being more pronounced in cultivar Cls. No. 24 than in cultivars Cll 328 Sugandham and Duggirala. Such a marked reduction in the starch/sugar ratio in leaves recorded by the cultivar Cls. No. 24 indicated that during rhizome bulking period, this cultivar was more efficient in the transloca-tion of photosynthates than the other two cultivars.
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carbohydrate level, starch/sugar ratio, turmeric, intercropping, coconut, monoculture
Citation
J.Plantn.Crops 1988 v-16 i-1 p-45-51