109-399.CHANGESINPHENOLMETABOLISMANDIAAOXIDASEACTIVITYOFBRINJALSOLANUMMELONGENAL.PLANTINRESPONSETOFOLIARAPPLICATIONOFDIFFERENTBCONCENTRATIONSByURVIGUPTAANDHITESHSOLANKI
Abstract
Boron is an essential micro nutrient required for nutrition and growth of all plants. Adequate Boron
nutrition is critical for high yield and quality of crop. Experiments were carried out in vivo to find out the
effect of foliar application of boron on physical and chemical parameters of brinjal. In chemical
parameters changes in phenol content, polyphenol oxidase activity and IAA Oxidase activity were studied
after the foliar application of Boron. Four treatments comprising of foliar application of boron at four
concentrations viz. 5ppm, 10ppm, 15pm and 20ppm with one control were checked and parameters were
studied with the use of standard methods. Higher phenol concentration was recorded in the controlled
plants and decreased with the higher B concentration. This indicates phenol accumulation induced by the
minimum B treatment. And the exact opposite results were found in polyphenol oxidase and IAA oxidase
activities where the least enzyme activities were recorded in controlled plants and it goes on increasing
with the higher B concentration, which indicates the oxidation of the phenols and IAA induced by the
higher B treatments.
KEY WORDS: Phenol Metabolism, Iaa, Brinjal, Foliar, B Concentrations.
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