Conclusions
As the duration of light is increased above the normal the concentration of the total carbohydrates and nitrogen increases resulting in a diminished range of C/N ratio. A concomitant increase in the acidity value of the plant sap is observed with the length of the day. Accumulation of such metabolites appears to play an increasingly significant role in governing the initiation of the reproductive phase, in modifying the nature of the growth curve and thus inducing abnormalities in the organism.
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Singh, B.N., Singh, S.N. Photoperiodism and the phasic development ofCrotalaria juncea . Proc. Indian Acad. Sci. 9, 323–330 (1939). https://doi.org/10.1007/BF03048505
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DOI: https://doi.org/10.1007/BF03048505