Foliar Application of Chitosan to Growth in Chilli Pepper Plants (Capsicum annuum L.)

Authors:Noah Stone


This article studies the effect of foliar application of chitosan on the growth of pepper plants (Capsicum annuum L) as a substitute for traditional fertilizers and fungicides. Physiological and molecular methods were carried out to evaluate the effect of chitosan application. Zoospores of Phytophthora capsici were obtained from Indonesia at a concentration of 1.104 mL-1 and counted by a hemocytometer (n = 3). After 33 days of growth, 5 mL of zoospores containing 5.104 cells were inoculated onto the plants using foliar feeding techniques. For gene expression analysis, leaves were sampled before and after 72 hours of inoculation. The results show that chitosan can promote the growth of peppers and enhance the resistance of pepper plants to Phytophthora infestans. Chitosan-treated plants grow taller, the more leaves and higher chlorophyll concentrations they have.

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