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Chaudhary Sarwan Kumar Himachal Pradesh Agriculture University, Palampur

Himachal Pradesh Krishi Vishvavidyalaya (renamed as Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya in June, 2001) was established on 1st November, 1978.The College of Agriculture (established in May, 1966) formed the nucleus of the new farm University. It is ICAR accredited and ISO 9001:2015 certified institution. The Indian Council of Agricultural Research has ranked this University at eleventh place among all farm universities of the country. The University has been given the mandate for making provision for imparting education in agriculture and other allied branches of learning, furthering the advancement of learning and prosecution of research and undertaking extension of such sciences, especially to the rural people of Himachal Pradesh. Over the years, this University has contributed significantly in transforming the farm scenario of Himachal Pradesh. It has developed human resources, varieties and technologies and transferred these to farming community enabling the State to receive the “Krishikarman award” of Govt. of India four times in row for food grain production among small states of the country. Today, the State has earned its name for hill agricultural diversification and the farming community has imposed its faith in the University.

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Author: Dananjaya, Kottawa Arachchige Jeevan × End date: 2022 × Start date: 2022 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Molecular diversity analysis and biochemical profiling of Sri Lankan and Indian tea (Camellia sinensis (L.) O. Kuntze) genotypesMolecular diversity analysis and biochemical profiling of Sri Lankan and Indian tea (Camellia sinensis (L.) O. Kuntze) genotypes
    (palampur, 2022-06-27) Dananjaya, Kottawa Arachchige Jeevan; Chaudhary, Harinder Kumar
    The present investigation entitled, “Molecular diversity analysis and biochemical profiling of Sri Lankan and Indian tea (Camellia sinensis (L.) O. Kuntze) genotypes” was undertaken with the objectives of molecular and biochemical characterization of Sri Lankan and Indian tea germplasm and identification of potential genotypes to expedite its genetic improvement. Total of 171 tea genotypes comprising 94 Sri Lankan and 77 Indian genotypes were used to assess molecular diversity. Based on 16 morphological characters, first three principal components explained 57.61 % and 58.43 % of the total variability of Sri Lankan and Indian genotypes, respectively. Young shoot colour recorded the highest Shannon’s index (H’=1.14) and (H’=1.16) among morphological descriptors of Sri Lankan and Indian genotypes, respectively. Based on biochemical characterization, genotypes viz. PBGT35, PBGT48, PBGT53 and PBGT71 recorded low caffeine content. Total of 28 polymorphic SSRs i.e.10 unigenic SSRs and 18 functionally relevant SSR amplified 94 different alleles and were developed for molecular diversity and population structure analysis. Based on the SSR data of 171 accessions, all Sri Lankan genotypes were grouped in a single cluster whereas Indian genotypes were grouped in two distinct clusters through structure analysis and principle coordinate analysis (PCoA). Five core collections were developed by different methods. Based on the evaluation parameters, the core collection derived using Gower’s method was the most representative method of the initial collections of Sri Lanka and India. Among selected 21 Sri Lankan core genotypes, 11 accessions belong to introductions followed by 5 TRI developed cultivars and 5 estate selections. Among selected 18 Indian core genotypes, 11 accessions are of China types followed by 2 Assam types and 5 recommended cultivars.