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​​Effect of Hermetic Storage on Seed Quality Maintenance of Dolichos Bean [Lablab purpureus (L.) var Typicus Prain]

DOI: 10.18805/LR-4621    | Article Id: LR-4621 | Page : 803-810
Citation :- ​​Effect of Hermetic Storage on Seed Quality Maintenance of Dolichos Bean [Lablab purpureus (L.) var Typicus Prain].Legume Research.2021.(44):803-810
K. Vanitha, P. Saidaiah, S. Harikishan, A. Geetha, K. Ravinder Reddy vanithareddy818@gmail.com
Address : College of Horticulture, Rajendranagar, Sri Konda Laxman Telangana State Horticultural University, Hyderabad-500 030, Telangana, India.
Submitted Date : 30-03-2021
Accepted Date : 29-04-2021

Abstract

Background: Dolichos bean is one of the important vegetable legume crops. During storage, protection of seed from bruchid attack is a major problem worldwide. Once the bruchid attacks, the extent of damage could be up to 100%, leading to both quantitative and qualitative loss by making it unfit for consumption. Existing traditional methods are less effective or impractical and the use of chemical methods can be harmful to the farmers and consumers. So, there is urgent need of hermetic storage method for seed quality maintenance. Keeping in view, the present study was carried out to investigate on hermetic storage practices for seed quality maintenance.
Methods: Triple-layer PICS technology, a chemical-free hermetic storage was evaluated for storage of dolichos bean to moisture content, germination and quality. Four different types of storage bags viz., jute bags, polythene bags, triple layer PICS bags and jute bags treated with chlorpyrifos were used for evaluating their efficacy in managing dolichos bean seed attributes. The data on various parameters pertaining to seed characteristics and changes in biochemical composition of dolichos bean seeds stored in different bags was recorded at every two month intervals for 3 times (2,4, and 6 months) by using standard protocols. Complete Randomized Design (CRD) (Snedecor and Cochran, 1967) was used for the data analysis. The data was subjected to statistical analysis as per the methods suggested by Panse and Sukhatme (1985). 
Result: Results on moisture content showed that, in case of storage in PICS bags, there was no decrease in seed moisture content at 2, 4 and 6 months respectively and germination percent in triple-layer PICS bag at 2, 4 and 6 months storage was highest among all bag types. Test weight (g), protein content (%) and  carbohydrate content (%) at 2, 4 and 6 months storage respectively were higher in triple layer PICS bag. The mean fat content recorded was highest in jute bag (1.25%) and lowest in triple layer PICS bag (0.63%). Our study concludes that the triple layer PICS bags hermetic technology is efficient in managing maintaining same level of moisture content percent, germination percent and test weight compared to other bags over 3 different periods of storage. The triple layer PICS bags are also highly useful for retaining carbohydrate percent and protein percent at almost the same levels compared to initial values. 

Keywords

 ​Dolichos bean Hermetic storage Triple-layer purdue storage bag Seed quality

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