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Agriculture University, Jodhpur

Agriculture University, Jodhpur was established on 14th September, 2013 by Government of Rajasthan under Agriculture University, Jodhpur Act 21 of 2013 to focus on holistic development of arid and semi-arid regions of the state covering 6 districts (Jodhpur, Barmer, Nagaur, Pali, Jalore and Sirohi), constituting 28% of total geographical area which is sustaining 20.8% human and 28.4% animal population of the state. The districts under jurisdiction of the university cover 3 agro-ecological zones of the state. These are Arid Western Plain Zone Ia (Jodhpur and Barmer districts), Transitional plain of Luni Basin Zone IIb (Jalore, Pali, and Sirohi districts) and part of Transitional Plain of Inland Drainage Zone IIa (Nagaur district). The university has 1 institute of diploma and 3 colleges to produce highly competent educated human resources in agriculture and allied sciences besides 2 agricultural research stations, one each in zone Ia & IIb and 3 agricultural research sub stations, one in each zone to prepare, plan and perform highly need based research in this acute water scarce but naturally rich bio-diversified zone of the country. The third most important part in tri-pillar (Teaching, Research & Extension) of agricultural development, the extension for transfer of technologies are reached to doorsteps of the farming community by 6 Krishi Vigyan Kendras (K-V-Ks), 2 in Nagaur district and 1 each in Jodhpur, Barmer, Jalore & Sirohi districts under the umbrella of the university. The different units of teaching, research and extension are coordinating to systematically run by the headquarter situated at Mandor, Jodhpur.

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20234
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Subject: Genetics and Plant Breeding × End date: 2023 × Start date: 2023 × Thesis Type: M.Sc ×
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Now showing 1 - 4 of 4
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    ThesisItemOpen Access
    Genetic Divergence Studies in Foxtail millet (Setaria italica L. P. Beauv)
    (Agriculture University, Jodhpur, 2023-08-14) Yadav, Yogendar; Dhoot, Rupal
    An experiment entitled “Genetic Divergence Studies in Foxtail millet (Setaria italica L. P. Beauv)’’ was conducted with 36 genotypes in khraif season 2022 at Instructional Farm, College of Agriculture, Jodhpur (Rajasthan). The experiment was put out in Randomized Block Design (RBD) with three replications. The observations of days to 50% flowering, number of productive tillers per plant, plant height, days to maturity, flag leaf length, flag leaf width, ear length, ear width, straw weight, harvest index, 1000 grain weight, grain protein, SCMR and grain yield per plant were recorded. Analysis of variance exhibited significant difference for all the trait, indicating the good amount of inherent variation were present. The phenotypic coefficient of variance was higher as compare to genotypic coefficient of variance for all the trait under study. The highest value of PCV and GCV was recorded for straw weight and chlorophyll content, while high heritability with high genetic advance were number of productive tillers per plant, ear width, straw weight and chlorophyll content. Analysis of correlation coefficient indicted that the grain yield per plant had positive significant correlation with ear width and straw weight. According to path analysis, the trait like flag leaf length, harvest index, straw weight and SCMR showed positive direct effect on grain yield per plant. The genetic divergence calculated by Mahalanobis D² statistics, grouped 36 genotypes into 11 cluster. Maximum intra cluster distance was recorded in cluster Ⅸ followed by cluster Ⅳ and cluster Ⅰ. Maximum inter cluster distance recorded between cluster Ⅲ and XI. Among the genotype showed a good level of divergence. Out of 36 genotypes GP-21, SiA3156, GP-217, SiA3222, GP-205, SiA3058, GP-118 and GP-180 were found superior in grain yield and for other characters based on mean performance. Hence, these genotypes would be used as parental source for future breeding programme.
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    ThesisItemOpen Access
    Studies on Heterosis, Combining Ability and Gene Effects in Castor (Ricinus communis L.)
    (Agriculture University, Jodhpur, 2023-08-24) Raghunwanshi, Shalini; Ramesh
    An experiment entitled “Studies on Heterosis, Combining Ability and Gene Effects in Castor (Ricinus communis L.)” was conducted with eight true breeding inbred lines, which were crossed in diallel fashion (excluding reciprocals) for the development of 28 hybrids. Resultant hybrids and parents were evaluated in randomized block design with three replications at the ARS Farm, Mandor, Agriculture university, Jodhpur, during kharif, 2022. The observations were recorded for 14 quantitative traits viz., days to 50 % flowering, days to 80% maturity of main spike, plant height up to primary raceme (cm), number of nodes up to primary raceme, number of primary branches per plant, effective number of spike per plant, total length of main spike (cm), effective length of main spike (cm), leaf area of 3rd leaf from main spike (cm2 ), number of capsules on main spike, 100-seed weight (g), seed yield per plant (g), volume weight ratio (g/ 100 ml) and oil content (%). The analysis of variance for experimental design revealed highly significant variances for genotypes, parents and hybrids for all the characters except number of nodes in parents. Interaction, parents vs. hybrids were highly significant for number of primary branches per plant, effective number of spike per plant, total length of main spike, effective length of main spike and oil content. Hybrid PVT-4 × MCI-8 exhibited significant positive heterosis over mid parent (27.46%), better parent (20.65%) and standard check GCH-8 (30.44%) and hybrid MP-11-17 × PVT-7 over the standard check GCH-8 (21.78%) for seed yield per plant and contributing traits. Parents, PVT-4, PVT-6, PVT-7 and hybrids, PVT-4 × MCI-8, MP-11-17 × AP-282 and MP-11-17 × PVT-7 were found promising as they registered significant positive GCA and SCA, respectively, for seed yield per plant and some of yield attributes. Hayman and Griffing's diallel analyses indicated over-dominance for seed yield per plant, days to 50% flowering, effective number of spike per plant and, leaf area of 3rd leaf from main spike, partial dominance for number of days to 80% maturity of main spike, plant height up to primary raceme, number of primary branches per plant, total length of main spike, effective length of main spike, number of capsules on main spike, 100-seed weight and complete dominance for number of nodes up to primary raceme, volume weight ratio and oil content . Considering mean performance, heterosis, combining ability and variance-covariance parameters the parents PVT-3, PVT-7, PVT-4, PVT-6 and cross combinations PVT-4 × MCI-8, MP-11-17 × PVT-7, PVT-6 × AP-282 and MP-11-17 × AP-282 were found promising for their exploitation in practical plant breeding.
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    ThesisItemOpen Access
    Heterosis and Combining Ability Studies in Pearl millet [Pennisetum glaucum (L.) R. Br.]
    (Agriculture University, Jodhpur, 2023-08-02) Ruchika; Khandelwal, Vikas
    Three testers (Male sterile lines) and eleven lines (Restorer lines) was crossed in line × tester design to estimates the heterosis and combining ability studies in pearl millet [Pennisetum glaucum (L.) R. Br.] and developed experimental material during summer, 2022. Afterwards, the parents along with thirty three hybrids and standard checks (MPMH-17, MPMH-21 and HHB 67) were evaluated during kharif, 2022. The crossing and evaluation work was carried out at Research farm of AICRP on Pearl Millet, Mandor (Jodhpur) Rajasthan. The analysis of variance, due to parents and parents vs. hybrids showed significant differences for all the characters in the study, while, for the hybrids it showed significant results for all the traits except for plant height and days to 50% flowering. Which indicated existence of considerable amount of genetic variability. On the basis of per se performance, hybrids ICMA 04999 × MIR 915, ICMA 94555 × MIR 1252, ICMA 04999 × MIR 710, ICMA 04999 × MIR 525-2 and ICMA 96333 × MIR 710 were found to be promising for grain yield per plant. Considerable amount of standard heterosis in desirable direction over the best standard check was observed for plant height, number of effective tillers per plant, zinc content, 1000- grain weight, stover yield per plant, harvest index and grain yield per plant. Hybrids ICMA 04999 × MIR 915, ICMA 94555 × MIR 1252, ICMA 04999 × MIR 710, ICMA 04999 × MIR 525-2 and ICMA 96333 × MIR 710 were reported good for grain yield per plant and other yield attributing traits and showed high per se performance and standard heterosis. Seventeen hybrids displayed positive significant standard heterosis for grain yield per plant. The top three hybrids viz., ICMA 04999 × MIR 915, ICMA 94555 × MIR 1252 and ICMA 04999 × MIR 710 exhibited maximum significant standard heterosis. These hybrids also showed positive significant standard heterosis for number of effective tillers per plant, stover yield per plant and harvest index over the best standard check. The analysis of variance for combining ability revealed the importance of both additive and non-additive gene action with prime role of non-additive genetic variance for inheritance of characters viz., days to 50% flowering, days to maturity, number of effective tillers per plant, panicle length and diameter, iron and zinc content, 1000-grain weight, stover yield per plant, harvest index, and grain yield per plant. Whereas, preponderance of additive gene action was found for inheritance of plant height and nodes per plant. The estimation of general combining ability suggested that, female parents ICMA 94555, ICMA 04999 and male parents MIR 1259, MIR 1252, MIR 612 and MIR 1106 were good general combiner for yield and some other yield attributing characters. The best specific crosses for grain yield per plant involved the combinations of either average × average or good × poor. Three hybrids viz., ICMA 04999 × MIR 915, ICMA 94555 × MIR 1106 and ICMA 96333 × MIR 612 showed maximum sca effect for grain yield per plant and other yield attributing traits like number of effective tillers per plant, panicle length, 1000-grain weight, stover yield per plant and harvest index.
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    ThesisItemOpen Access
    Assessment of Genetic Parameters in Mutant Lines of Indian Mustard (Brassica juncea L.)
    (Agriculture University, Jodhpur, 2023-09-13) Bijarniya, Pradeep; Bhardwaj, Rahul
    An experiment entitled “Assessment of Genetic Parameters in Mutant Lines of Indian Mustard (Brassica juncea L.)” was conducted with 40 genotypes of Brassica juncea in Rabi Season 2022-23 at Research Farm, Agriculture Research Station Mandor, Agriculture University Jodhpur (Rajasthan). The experiment was carried out in randomized block design (RBD) with 3 replications. The observations for days to first flower initiation, days to 50% flowering, days to maturity, plant height, number of primary branches per plant, number of siliqua per plant, siliqua length, number of seeds per siliqua, 1000-seed weight, seed yield per plant, harvest index, oil content, and screening of white rust and powdery mildew were recorded. Analysis of variance exhibited significant difference for all the trait, indicating the good amount of inherent variation was present. The phenotypic coefficient of variance was higher as compare to genotypic coefficient of variance for all the traits under study. The highest value of PCV and GCV was recorded for harvest index followed by number of siliqua per plant, plant height, number of seed per siliqua. High heritability coupled with high genetic advance as per cent of mean were observed for all the characters except days to maturity, days to 50% flowering, days to first flower initiation and oil content which has high heritability coupled with low genetic advance as percent of mean. Analysis of correlation coefficient indicated that seed yield per plant had positive significant correlation with number of siliqua per plant and harvest index. According to path analysis, the traits like days to first flower initiation, plant height, number of siliqua per plant, 1000-seed weight and harvest index showed positive direct effect on seed yield per plant. The genetic divergence calculated by Mahalanobis D2 statistics, grouped 40 genotypes into seven clusters. Maximum intra cluster distance was observed in cluster VI followed by cluster III, cluster I, cluster VII. Whereas maximum inter cluster distance was observed between cluster V and VII followed by cluster VI and VII, cluster III and VII and cluster IV and VII. As per Ward’s D coefficient the 40 genotypes of Brassica juncea were grouped in VII different clusters. All the genotypes showed a good level of divergence among themselves as most distant related species clustured in different groups. The genotype viz., MMM 21-10 and MMM 21-11 depicted good yield along with high oil content (%) and moderate resistant for white rust and powdery mildew in Indian mustard.