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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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Subject: Plant Breeding and Genetics × Author: BINDRA, SHAYLA × Start date: 2015 × Type: Thesis ×
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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.