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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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2015 - 20162
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Subject: Plant Breeding and Genetics × Start date: 2015 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    INTROGRESSION OF URDBEAN ANTHRACNOSE RESISTANCE AND YIELD COMPONENTS INVOLVING VIGNA MUNGO X V. UMBELLATA HYBRIDIZATION
    (CSK Himachal Pradesh Krishi Vishavavidyalaya, Palampur, 2016) BINDRA, SHAYLA; Mittal, Raj Kumar
    “Introgression of urdbean anthracnose resistance and yield components involving Vigna mungo x V. umbellata hybridization” was carried out with the objective to develop inter-specific hybrids, study inheritance of urdbean anthracnose (Colletotrichum truncatum) resistance and nature and magnitude of gene effects for yield and its component traits. Inter-specific crosses were attempted between three genotypes each of V. mungo and V. umbellata to transfer genes for disease resistance and yield related traits. Inter-specific hybridization revealed the presence of pre-fertilization barriers; confirmed by the frequency of pod set and post-fertilization barriers as F1‟s exhibited reduced germination and sterility. The frequency of inter-specific hybridization, radicle and plant production percentage, revealed the genotype specific response of both the species. Inheritance of anthracnose leaf spot under natural and artificial epiphytotic conditions in KUG-216 x HPBU-111, KUG-216 x Palampur-93 and IPU-05-13 x Palampur-93 indicated the involvement of single dominant gene for disease resistance. In parents; KUG-216 and IPU-05-13, test of allelism is suggested to determine whether the gene present in them is similar or not. Six-generations of four inter-varietal crosses (KUG-216 x HPBU-111, KUG-216 x Palampur-93, IPU-05-13 x HPBU-111 and IPU-05-13 x Palampur-93) were evaluated to derive information on nature and magnitude of gene effects for yield and its component traits. Scaling tests revealed inadequacy of additive-dominance model for all the traits indicating the presence of non-allelic interactions. Duplicate gene action was observed for six characters in KUG-216 x HPBU-111, five in KUG-216 x Palampur-93, one in IPU-05-13 x HPBU-111 and two in IPU-05-13 x Palampur-93 and complementary gene action for one character each in KUG-216 x Palampur-93 and IPU-05-13 x HPBU-111. Therefore, selection in later generations for duplicate gene action and early generation selection in complementary gene action involving intermatings in F2 should be adopted for harnessing desirable recombinants. Significant inbreeding depression in F2 was observed in crosses exhibiting heterosis which could be due to the linkage of genes. Negative over-dominance as shown by estimates of potence ratio can be exploited in four traits viz; days to flower initiation, days to 50 per cent flowering, days to 75 per cent maturity and plant height. IPU-05-13 x Palampur-93 was found to be the best cross combination followed by KUG-216 x Palampur-93 exhibiting highest mean seed yield per plant in F1‟s, beneficial heterosis for six and seven traits, respectively. The [h] and [i] type of non-allelic interactions in IPU-05-13 x Palampur-93 whereas duplicate type of interaction in KUG-216 x Palampur-93 along with over-dominance was observed. Hence, intermatings in F2 and reciprocal recurrent selections could be adopted to increase the frequency of favourable genes. IPU-05-13 x Palampur-93 and KUG-216 x Palampur-93 should be utilized in future breeding programmes to develop superior genotypes in urdbean.
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    ThesisItemOpen Access
    GENE ACTION FOR AGROMORPHOLOGICAL AND QUALITY TRAITS IN LINSEED (Linum usitatissimum L.)
    (DEPARTMENT OF CROP IMPROVEMENT, 2015-08-14) KUMARI, ARPNA; Paul, Satish
    ABSTRACT Flax (Linum usitatissimum L.) is an annual, self-pollinat¬ing, diploid (2n = 2x = 30) crop belonging to the Linaceae family with a genome size of ~ 370 Mb. Gene action for seed yield and its component traits in linseed were studied using triple test cross and line × tester analysis. The main objective was to determine the nature and magnitude of genic effects for different biometrical traits under variable environments that could support further improvements of linseed productivity using appropriate breeding methodology. The epistatic component of genetic variation detected in the present studies in the inheritance of all the yield and yield contributing traits except for plant height, technical height at Palampur (E1) and seeds per capsule in all the environments (E1, E2 and E3). Mean squares due to sums (which indicate additive component) were highly significant for all characters studied except for seeds per capsule in all the environments (E1, E2 and E3). The mean squares due to differences (which indicate dominance component) were also significant for all characters studied except for technical height at Palampur (E1) and days to 75 per cent maturity and seeds per capsule in all the environments (E1, E2 and E3). The directional element (F) was non-significant (ambidirectional) for all the traits for which dominance component was significant in all the environments (E1, E2 and E3) suggesting that the alleles with increasing and decreasing effects appear to be dominant and recessive to the same extent. Comparison of the two approaches has revealed that, in general the presence of dominance genetic variance alone with respect to seeds per capsule and additive genetic variance with respect to days to 75 per cent maturity in all the environments (E1, E2 and E3) has been revealed by both triple test cross and line × tester analysis. The parents Giza-7, Jeewan and Bhagsu were found to be the good general combiners for seed yield per plant and component traits at Palampur (E1) and pooled over the environments (E3). Further, evaluation of crosses based on combination of heterosis and SCA parameters would be more meaningful than on individual parameters. The common crosses based on both high heterotic response as well as high SCA effect in relation to GCA effects were Giza-7 × Surbhi, Lauro × Belinka-60 and KL-236 × Belinka-60 for seed yield, Giza-7 × Surbhi and Lauro × Belinka-60 for fibre yield and Chambal × Belinka-60, Jeewan × Surbhi and T-397 × Belinka-60 for oil content in pooled over the environments (E3). Two genotypes Nagarkot, and Jeewan and four crosses Ariane × F1, Giza-8 × Belinka-60, KL-244 × Belinka-60 and Nagarkot × Belinka-60 were found to be resistant to powdery mildew, rust and fusarium wilt diseases. The F2 population of the crosses between resistant and susceptible parents segregated in a ratio of 3R:1S, indicating the presence of a single dominant gene for resistance to powdery mildew in Nagarkot, Janaki and Jeewan. Information of genetic diversity and the relationship among different genotypes of linseed is of great importance for plant breeding and genetic resource management. Molecular analysis of 28 genotypes of linseed was carried out to determine the genetic relationship among them. The results suggest that primers used in this study were informative and 16 RAPD and 11 ISSR primers generated 4.5 and 5.27 fragments on an average. ISSR data revealed somewhat more clear relationships between studied genotypes and found more useful than RAPD marker data as besides more number of fragments, RAPD was unable to detect clear relationships between the genotypes. Thus ISSR markers were more informative than RAPD markers in revealing clear cut relationships of the genotypes. The results of present study indicate that the collection of 28 genotypes assessed here is having high diversity and also revealed the broad genetic base of analyzed genotypes.