Effect of phytohormones and micronutrients and their mediation in enhancement of yield and fruit quality of banana cv Grand Naine

Abstract

newline xviii newlineAuthor : KOMMANA PAVANI newlineTitle of thesis : Effect of phytohormones and micronutrients newlineand their mediation in enhancement of yield and newlinefruit quality of banana cv. Grand Naine newlineDegree for which it is newlinesubmitted newline: D OCTOR OF PHILOSOPHY newlineFaculty : HORTICULTURE newlineMajor field : FRUIT SCIENCE newlineChairman of newlineAdvisory Committee newline: Dr. B. SRINIVASULU newlineUniversity : Dr. Y.S.R. HORTICULTURAL UNIVERSITY newlineYear of submission : 2023 newlineABSTRACT newlineThe present investigation Effect of phytohormones and micronutrients newlineand their mediation in enhancement of yield and fruit quality of banana cv. newlineGrand Naine was conducted at Fruit Science block, Dr. YSRHU-College of newlineHorticulture, Anantharajupeta, Annamayya district, Andhra Pradesh during the newlineyears 2021-22 and 2022-23. The experiment was laid out in factorial randomized newlineblock design (FRBD) with two replications. The treatments included six newlinephytohormones (P1: Methyl Jasmonate at 1.5 and#956;M, P2: Methyl Jasmonate at newline1. 0 and#956;M, P3: Salicylic acid at 200ppm, P4: Salicylic acid at 100ppm, P5: newlineHomobrassinolide at 3ppm and P6: Homobrassinolide at 2ppm) combined with newlinethree micronutrients (M1: Zinc sulphate at 0.5 %, M2: Ferrous sulphate at 0.2 %, newlineand M3: Borax at 0.3 %). newlineWith regard to growth parameters, the foliar application of phytohormone, newlineHomobrassinolide at 3ppm (P5) recorded the highest number of leaves and leaf newlinearea whereas, among the micronutrients, Ferrous sulphate at 0.2 % (M2) resulted newlinein the highest number of leaves and leaf area. The interaction effect of newlineHomobrassinolide at 3ppm + Ferrous sulphate at 0.2 % (P5M2) showed the highest newlinenumber of leaves (22.77, 22.30 and 22.54), leaf length (164.55, 164.15 and 164.35 newlinecm), leaf width (74.15, 74.24 and 74.19 cm) and leaf area (14.23, 14.74 and 14.99 newlinem2) during plant crop, ratoon crop with pooled mean, respectively. newlineThe phenological characters indicated earliness with less number of days newlinefor leaf unfurling, flag leaf initiation, shooting, bunch harvest and fruit maturity in newlineplants sprayed with Homobrassinolide at 3ppm (P5). Among the micronutrients, newlineFerrou