Author(s): Sreedhar Devarakonda, C Madhumathi, L Mukunda Lakshmi, V Umamahesh, Venkata Satish Kuchi, B Prathap, V Vijaya Bhaskar and T Rajasekharam

Abstract: Plant elicitors were sprayed at pre-harvest stage mainly during anthesis of papaya to know the fruit quality and shelf life parameters. The trial was conducted during 2015-16 and 2016-17 at Horticultural Research station, Anantharajupeta, railway Kodur, Andhra Pradesh. In this salicylic acid was sprayed with different concentrations i.e. (50 ppm, 100 ppm, 150 ppm) and also jasmonic acid sprayed with different concentrations (50 µM, 100 µM, 150 µM) once during 50 Days After Anthesis and also twice (Two times) at 50 Days After Anthesis and also at 75 Days After Anthesis and control (no spray). Fruits were kept for storage in open condition. Titrable acidity showed a constant decline with enhancement of storage period upto 12 days. Whereas, lowest titrable acidity was observed in T13 i.e. control upto 6th day of storage. By 9th day in the treatment T9 (SA @ 150 ppm at 50 and 75 DAA) noticed the lowest titrable acidity (0.19%) which was on par with T8 (0.18%) and T7 (0.19%). As far as carotenoid content is concerned, an increasing trend with increase in storage life upto nine days of storage was observed and declined thereafter. With increasing storage period ascorbic acid content showed a declining trend. No significant difference was observed among treatments at 12 days after storage regarding ascorbic acid content.

DOI: 10.33545/26174693.2023.v7.i2Sg.262