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VOL. 6, ISSUE 6 (2021)
Effect of γ-irradiation on respiration rate and ethylene levels of mutant lines to enhance shelf life of papaya var. arka prabhath (Carica papaya L.)
Authors
Ramesh A N, Vageesh S Hannur, Santhosh D B, Vasugi C, Sudhakar Rao, Parushuram Chandravamshi
Abstract
The Papaya Arka Prabhath is an advanced generation gynodioecious variety released by ICAR-IIHR. The fruits were observed for 10 days weight, ethylene production and the CO2 rate which were found to be varying each day. The rate of respiration of fresh produce is temperature dependant and it was controlled by many enzymes. Reducing the rate of respiration is an important consideration in extending the postharvest life of a fruit and optimizing postharvest quality. Some of the lines were selected for shelf life studies based on qualitative and quantitative traits like vigour, dwarf nature, quality, early flowering, resistant to Papaya Ring Spot Virus, hermaphroditic types, type of fruit and firmness of the fruits. Total 11 promising mutants are identified in M2 population and one among 11 is R5P6 mutant which showed significant variation in fruit weight it ranged from 1695.57g to 1580.56g. The respiration rate ranged from 51.84 mg CO2 kg/h to 88.86 mg CO2 kg/h. However, 115.01g decrease in fruit weight and an increase of 37.02 mg CO2 kg/h was observed during 10 days and inverse relation between physiological loss of weight and respiration rate was observed. During respiration, there was a significant increase in volume of water consumed from 7747.55 ml to 7897.85 ml for 10 days.
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Pages:1139-1147
How to cite this article:
Ramesh A N, Vageesh S Hannur, Santhosh D B, Vasugi C, Sudhakar Rao, Parushuram Chandravamshi "Effect of γ-irradiation on respiration rate and ethylene levels of mutant lines to enhance shelf life of papaya var. arka prabhath (<em>Carica papaya L.</em>) ". International Journal of Botany Studies, Vol 6, Issue 6, 2021, Pages 1139-1147
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