Influence of red and far red light on pigment systems in ripening tomato lycopersicon esculentum cultivar marglobe fruits

Mehta, P.M.; Bhavannarayana, K.

Indian Journal of Plant Physiology 24(3): 224-228

1981


ISSN/ISBN: 0019-5502
Accession: 005690803

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Abstract
Red light [R] induced and far-red light [Fr] inhibited carotenoid biosynthesis, particularly lycopene, in ripening tomatoes (L. esculentum Mill.). R enhanced the degradation of chlorophylls [Chl] but Fr slowed down the process. Chl a degraded rapidly compared to Cl b. Chlorophyllase activity was enhanced in R, whereas Fr inhibited with less effect. Evidently, phytochrome mediates the catabolism of Chl and the synthesis of carotenoids.