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2018 - 201912020 - 20211
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Author: Harmeet Singh × Start date: 2010 ×
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    ThesisItemOpen Access
    Functional properties and utilization of jackfruit seeds
    (Punjab Agricultural University, Ludhiana, 2021) Harmeet Singh; Sharma, Savita
    The study on jackfruit seeds was undertaken for assessing its functional properties and utilization of seeds for value added products. The seed flour was evaluated for its physicochemical attributes, functional properties and bioactive compositions. It contains higher amount of protein (16.46%), ash (2.12%), crude fat (1.52%), crude fiber (2.77%) and lower carbohydrates (67.62%). The use of jackfruit seed flour in various product formulations was investigated, viz., pasta, cereal bar, corn chips, pinni and juice. The quality characteristics of the prepared products from jackfruit seed flour were evaluated. Pasta was enriched with jackfruit seed flour at 6, 12, 18 and 24 per cent level, of which sample enriched at 18 per cent level had best quality. Cereal bar, corn chips, pinni and enriched with jackfruit seed flour had improved nutritional and sensory profile. Cereal bars were prepared by incorporation of jackfruit seed flour at 15 and 30 per cent concentrations. High overall acceptability of bar suggested that incorporation can be done to 30 per cent level without development of any off flavour. Corn chips and pinni enriched at 6 and 30 per cent level respectively were found most suitable with regard to its appearance, taste, texture and overall acceptability. Sensory properties of the products enriched with jackfruit seed flour was comparable as the control ones. The storage stability of pasta and corn chips for 4 months, cereal bar for 3 months and pinni for 45 days at ambient storage conditions were investigated. During the storage of products at ambient conditions, significant changes in quality parameters were observed. Pasta was found acceptable after 4 months of storage while corn chips were acceptable till 3 months of storage period. Cereal bars were found acceptable for over 3 months of storage period. Thus, the jackfruit seed has a lot of potential to be utilized in development of variety of enriched and value-added products.
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    ThesisItemOpen Access
    DEVELOPMENT OF A DIVERSIFIED SET OF Triticum timopheevi BASED FERTILITY RESTORERS IN WHEAT
    (Punjab Agricultural University, Ludhiana, 2018) Harmeet Singh; Srivastava, Puja
    The study was based on 2100 backcross progenies derived from crosses of fertility restorers with 9 European winter wheat lines. BC1F6 progenies were evaluated at PAU, Ludhiana in 2017-18 for key traits of fertility restoration and anther extrusion, along with preliminary agronomic performance. On the scale of 1-9 for anther extrusion, about 75% progenies exhibited score of 7 and above as high anther extrusion winter wheat lines were used as parents. The range for fertility restoration varied from 12% - 80% in the backcross derivatives. Mean yield of the diversified restorer set was found to be higher than the R-parents. In the restorer evaluation trial, two top yielding lines were line no. 6 (R-1//AMORAK/R-19) and 78 (RS-534//HURLEY/R-4). A total of 26 restorer lines surpassed the highest yielding R-parent. The back cross derivatives involving Amorak as winter parent proved to be superior, followed by Exotic and Maxyl based restorers. R-1//AMORAK/R-19 came out to be best performing in terms of mean yield as well as fertility restoration, whereas R-1//AMORAK/R-1 and RW-17//EXOTIC/R-1, both proved to be best performing for pollen viability and anther size characters. RS-317//HURLEY/R-4 and RS-534//MAXYL/R-28 displayed superiority in terms of tiller number and thousand grain weight, respectively. In the preliminary evaluation of test hybrids, 11.1% F1s showed significant heterosis over commercial checks. The best hybrid from the restorer set was TH 32 (CMS BWL 3275 X R-4//HURLEY/R-1), exhibiting standard heterosis of 29.5%, 21.5%, 25.4% and 28.5%, over checks HD 2967, HD 3086, PBW 725 and PBW 723 respectively. In F2 populations derived from fully fertile F1s, significant association was observed between fertility restoring Rf8 gene with fertility restoration trait.