Thumbnail Image

Chaudhary Charan Singh Haryana Agricultural University, Hisar

Chaudhary Charan Singh Haryana Agricultural University popularly known as HAU, is one of Asia's biggest agricultural universities, located at Hisar in the Indian state of Haryana. It is named after India's seventh Prime Minister, Chaudhary Charan Singh. It is a leader in agricultural research in India and contributed significantly to Green Revolution and White Revolution in India in the 1960s and 70s. It has a very large campus and has several research centres throughout the state. It won the Indian Council of Agricultural Research's Award for the Best Institute in 1997. HAU was initially a campus of Punjab Agricultural University, Ludhiana. After the formation of Haryana in 1966, it became an autonomous institution on February 2, 1970 through a Presidential Ordinance, later ratified as Haryana and Punjab Agricultural Universities Act, 1970, passed by the Lok Sabha on March 29, 1970. A. L. Fletcher, the first Vice-Chancellor of the university, was instrumental in its initial growth.

Browse

20211
Reset filters
Subject: Fruit Science × Author: Gurpreet Singh × Start date: 2020 × Thesis Type: M.Sc ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Studies on effect of salicylic acid, putrescine and modified atmospheric packaging of guava (Psidium guajava L.) cultivar Hisar Safeda
    (CCSHAU, Hisar, 2021-09) Gurpreet Singh; Malik, Arvind
    Guava fruits are highly perishable in nature, necessitating strategies to enhance post-harvest life in order to extend fresh fruit market period. Therefore, the present investigations were conducted to explore the possibilities of storage of guava cv. Hisar Safeda in refrigerated and ambient conditions with treatments of salicylic acid, putrescine and different modified atmospheric packaging. The fruits harvested at physiological maturity stage were subjected to the treatments of salicylic acid (1 mM, 2 mM, 3 mM and 4 mM), putrescine (2 mM, 3 mM, 4 mM and 5 mM) and different modified atmospheric packaging (LDPE, HDPE, Polypropylene and cellophane paper), packed in CFB boxes and stored in refrigerator and ambient conditions. The fruits were analyzed for various parameters on alternate days. Under both the storage conditions, all the treatments exhibited potential to maintain the post-harvest life of guava fruits as compared to control. However, higher concentrations of salicylic acid and putrescine are effective in reducing physiological loss in weight, decay loss and retaining a higher level of total soluble solids (TSS), TSS: Acid ratio, sugars, ascorbic acid and pectin content, which helps in maintaining acceptable quality and improving the shelf-life of guava cv. Hisar Safeda in refrigerator as well as ambient storage. The best overall results were found in fruits treated with salicylic acid @ 4 mM followed by salicylic acid @ 3 mM under refrigerator storage. Also, modified atmospheric packaging (MAP) with HDPE 25 micron was found to extend the shelf-life and maintain the better quality of guava during storage and proved to be the best MAP treatment. Hence, salicylic acid, putrescine and HDPE seems have the potential to enhance the post-harvest life of guava in refrigerator as well as ambient storage.