Influence of PGRs and Bio-inoculants on Seed Germination and Growth Characteristics of Papaya cv. Red Lady in Shade Net

Gadampally Harshitha, Anis Mirza, Pranathi Gunda

Abstract

Papaya farmers faces challenges such as slow, unreliable, and incomplete germination of seeds, as well as notable mortality among seedlings. As a result, the primary method of propagation for papaya is through seeds. Application of plant growth regulators (PGRs) and bio-inoculants have indeed played a crucial role in improving seed germination, growth, productivity, and quality of various fruit crops. The present research entitled “Influence of PGRs and bio-inoculants on seed germination and growth characteristics of papaya cv. Red Lady in shade net” was conducted. The study was conducted using a completely randomized design, which included 15 treatments with three replications. Results indicated that, GA3 (Gibberellic acid) 120 ppm + PSB (Phosphorous solubilizing bacteria) 5 g, exhibited the shortest days for germination (19 days), highest germination percentage (91.11%), germination index (1.05), seed vigor index (4,781.03) and favorable growth parameters such as height of seedling (52.49 cm), stem girth (8.80 mm), number of leaves (11.22), shoot length (30.32 cm), root length (22.17 cm), root diameter (7.62 mm), fresh weight of shoot (15.57 gm), dry weight of shoot (2.27 g), fresh weight of root (6.73 gm) and dry weight of root (1.03 g). The maximum root:shoot ratio (0.63) was observed in GA3 60 ppm + PSB 5 g. Overall, the findings indicate that the application of GA3 120 ppm + PSB 5 g enhances seed germination and growth characteristics of the crop papaya cv. Red Lady.

Published on: October 27, 2023
doi: 10.17756/jfcn.2023-s1-019
Citation: Harshitha G, Mirza A, Gunda P. 2023. Influence of PGRs and Bio-inoculants on Seed Germination and Growth Characteristics of Papaya cv. Red Lady in Shade Net. J Food Chem Nanotechnol 9(S1): S148-S153.

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