STUDIES ON DIFFERENT STAGES OF MATURITY AND ETHYLENE TREATMENTS ON POST HARVEST BEHAVIOR OF MANGO (Mangifera indica L.) cv. CHINNARASAM AND NAVANEETHAM
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Date
2016-08-30
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College of Horticulture, Rajendranagar, HYD-30
Abstract
The present research study entitled “studies on different stages of maturity and ethylene treatments on post-harvest behavior of mango (Mangifera indica L.) cv. Chinnarasam and Navaneetham” was conducted at Fruit Research Station, Sangareddy, Medak district, Telangana State during the year 2014 - 15. The experiment was carried out in Factorial Completely Randomized Design with three replications.
In the experiment, three factors viz., (A) Cultivars, (B) Maturity stages, (C) ethrel treatments were taken for test. Mango cultivars Chinnarasam and Navaneetham harvested at two maturity stages i.e. M1 (7-90 B) and M2 (9-110 B) were given five treatments viz., (T1) Ethylene treatment @ 250ppm (T2) Ethylene treatment @ 500ppm (T3) Ethylene treatment @ 750ppm (T4) Ethylene treatment @ 1000ppm and (T5) control (water dip).
Among the two cultivars Navaneetham recorded significantly lower shelf life in both the maturity stages (M1-7-90 B and M2- 9-110 B) compared to Chinnarasam.
The fruits of cv. Chinnarasam and Navaneetham harvested at maturity stage 2 (9-110 B) recorded significantly better quality parameters compared to maturity stage 1(M1 7-90 B). However, the shelf life was less in maturity stage 2 (9-110 B).
Among the treatments, though 1000 ppm recorded significantly less number of days taken for ripening, keeping quality and shelf life was less. Whereas treatments T2 and T3 (500 ppm and 750 ppm) recorded significantly higher shelf life in both the varieties harvested at both the maturity stages (M1 7-90 B and M2 9-110 B).
Finally to conclude, ethylene treatment @500ppm (ethrel 1.28 ml+ 0.4g NaoH pellets per liter of water) and ethylene treatment @750ppm (ethrel 1.92 ml+ 0.4 g NaoH pellets per liter of water) can be recommended for better quality and shelf life in both the cultivars. However, ethrel @ 500ppm can be recommended for both the varieties in maturity stage 2 (9-110 B, TSS) and ethrel @750ppm can be recommended for maturity stage 1 (7-90 B, TSS).
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Finally to conclude, ethylene treatment @500ppm (ethrel 1.28 ml+ 0.4g NaoH pellets per liter of water) and ethylene treatment @750ppm (ethrel 1.92 ml+ 0.4 g NaoH pellets per liter of water) can be recommended for better quality and shelf life in both the cultivars. However, ethrel @ 500ppm can be recommended for both the varieties in maturity stage 2 (9-110 B, TSS) and ethrel @750ppm can be recommended for maturity stage 1 (7-90 B, TSS).
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Citation
Sri Konda Laxman Telangana State Horticultural University, Rajendranagar, Hyderabad-30