Theses Abstracts : 2017 (Post Graduate theses submitted to UAS Dharwad, UAS Raichur, UHS Bagalkot and UAHS Shivamogga) Year of publication : January, 2018 Pages : 246 + 4 Copies : 750 Copy right : University of Agricultural Sciences Dharwad - 580 005, Karnataka, India Compiled and edited by : Dr. S. T. Naik, Dean (PGS), UAS, Dharwad Dr. M. G. Patil, Dean (PGS), UAS, Raichur Dr. N. Basavaraj, Dean (PGS), UHS, Bagalkot Dr. T. S. Vageesh, Dean (PGS), UAHS, Shivamogga Dr. Y. R. Aladakatti, Editor, Publication Centre, UAS, Dharwad Dr. Pramod Katti, Editor, Publication Centre, UAS, Raichur Dr. Y. K. Kotikal, Editor, Publication Centre, UAS, Bagalkot Dr. K. C. Shashidhar, Editor, University Communication Centre, UAHS, Shivamogga Publisher : Director of Education UAS, Dharwad - 580 005, Karnataka, India DTP and Typesetting : DTP Unit Publication Centre, Directorate of Education University of Agricultural Sciences, Dharwad - 580 005 CONTENTS Sl. No. Particulars Page No. I. Theses Abstracts of UAS, Dharwad 1. Abstracts of Doctor of Philosophy ..................................................................... 01-20 2. Abstracts of Master of Sciences ....................................................................... 21-109 II. Theses Abstracts of UAS, Raichur 1. Abstracts of Doctor of Philosophy ................................................................. 110-118 2. Abstracts of Master of Sciences ..................................................................... 119-157 III. Theses Abstracts of UHS, Bagalkot 1. Abstracts of Doctor of Philosophy .................................................................158-164 2. Abstracts of Master of Sciences ..................................................................... 165-211 IV. Theses Abstracts of UAHS, Shivamogga 1. Abstracts of Doctor of Philosophy .................................................................212-216 2. Abstracts of Master of Sciences ..................................................................... 217-246 ABSTRACTS OF THESES Accepted for the award of post-graduate degrees in the University of Agricultural Sciences, Dharwad during 2017 DOCTOR OF PHILOSOPHY A. CROP SCIENCES GENETICS AND PLANT BREEDING Genetic analysis of the traits related to mechanical harvesting in Chickpea (Cicer arietinum) B. M. SHRIDEVI MAJOR ADVISOR: Dr. V. RUDRA NAIK The present study was undertaken during rabi and kharif seasons ICCX 40183 and ICCX 40111 and for yield related traits RVSSG 9, of 2011-13 at Botany Garden, Department of Genetics and Plant BGD 1068 and Phule G 0215-2 were found promising. Crosses like Breeding, University of Agricultural Sciences, Dharwad for assessing AT 2-3 x RVSSG 10 and Phule G 0215-2 x ICCX 40111 were found the genetic variability, inter-character association, diversity, nature superior for most of the mechanical harvesting traits. For productivity of gene action and identifying potential cross combinations for the traits, crosses like GJG 0907 x BGD 1070, GJG 0907 x BG 256 and traits related to mechanical harvesting and yield attributes in RVSSG 9 x ICCX 40111 exhibited significant sca effects. Among 36 chickpea. The material comprised of 58 genetically diverse genotypes crosses, seventeen were evaluated for generation mean analysis. obtained from AICRP on chickpea, UAS, Dharwad and ICRISAT, The magnitude of non-additive gene action was predominant in Hyderabad. The study revealed considerable variability and nature for most of the traits studied suggesting development of heritability for majority of traits. Correlation studies indicated multiple crosses and raising of large segregating populations followed highly significant negative relationship between productivity traits by intermating of desired segregants for enhancing the frequency of and traits related to mechanical harvesting. D2 analysis revealed additive genes. Based on the combining ability studies and that number of seeds per plant and seed yield per plant contributed performance of F2 crosses, segregants of crosses viz., AT 2-3 x maximum to the divergence. Among 58, twelve genetically diverse ICCX 40111, RVSSG 9 x RVSSG 10 and RVSSG 9 x BG 256 were genotypes were selected for developing cross combinations in L x T found to be potential for combining mechanical harvesting and design. For the traits related to mechanical harvesting, genotypes productivity traits. Genetic studies related to biofortification and grain quality in Rabi Sorghum (Sorghum bicolor Moench L.) SHILPA MALAGHAN MAJOR ADVISOR: Dr. S. T. KAJJIDONI A comprehensive study to understand the genetics of biofortification ability analysis (11 Lines x 8 Testers) revealed that plant height, 100 with micronutrients (Fe and Zn) was undertaken from 2013-16 at All seed weight and grain Fe content were observed to be governed by India Co-ordinated Sorghum Improvement Project, Main Agriculture additive gene action, whereas grain zinc content, grain and fodder yield Research Station, UAS, Dharwad among 134diverse lines of rabi were under non-additive genetic control. Among parents, SEVS-8, Barsi 2 sorghum. High estimates of GCV, PCV hbs and GAM were obtained Jawar, Madhabavi local, and DSV-4 were good general combiners for for most of the grain yield component traits along with nutritional (Fe grain yield whereas, lines SEVS-8 and Lingasgur-2 for grain Fe and Zn and Zn) and an anti-nutritional (phytate) traits in sorghum. Physiological content, respectively. Crosses Barsi Jawar x CSV-18, Kodamurki Local and root morphological basis for grain micronutrients among 25 x DSV-4, Barsi Jawar x Phule Revati and Madhabavi Local x CSV-18 genotypes selected based on preliminary screening for grain Fe and Zn were good specific combiners for grain yield with high per se performance was done. Grain micronutrient contents were significant positively for both grain yield and micronutrient content (>35 mg/kg of Fe and correlated with flag leaf chlorophyll content and stay green traits. Grain >30 mg/kg of Zn). Best crosses SEVS-8 x IS-5094 (44.12 mg/kg) for Fe, Zn content was significant positively associated with root volume, Lingasgur-2 x IS-5094 (39.56 mg/kg) and Madabhavi Local x IS-5094 spread, and dry weight, indicating the importance of these traits to be (38.54 mg/kg) for Zn can be utilized for developing micronutrient rich considered while breeding for yield and nutrition in sorghum. Combining genotypes to fight with hidden hunger. Genetic analysis of resistance to Aspergillus flavus infection in Groundnut (Arachis hypogaea L.) DEEPA P. SALUNKE MAJOR ADVISOR: Dr. P. V. KENCHANAGOUDAR The present investigation was carried out in MARS, Dharwad to recorded stable resistance hence these were used for hybridization study the inheritance of resistance to Aspergillus flavus and improve with GPBD-5 (2976.15 µg/kg) and TGLPS-3 (3408.10 µg/kg) to the agronomic traits with resistance in F3 generation during summer generate segregating population for further studies. Inheritance 2013-14 to 2015-16. A total number of 388 genotypes were screened studies were conducted in F2 and confirmed in backcross and F3 by in vitro spore spray and pin prick methods. Among them two generation. Character association and variability studies of lines ICGV-02266 (3.23 µg/kg) and ICGV-02207 (6.25 µg/kg) Aspergillus flavus seed colonization and infection resistance with 1 other traits was done in F3 generation. In all four crosses, segregation colonization and infection in F3 generations for identification of ratio of 3 resistant: 13 susceptible was obtained in F2 population superior lines with resistance. Higher magnitude of GCV, PCV and for Aspergillus flavus seed colonization resistance. The segregation high heritability coupled with high genetic advance over mean was ratio of backcross and F3 populations confirmed the role of inhibitory observed for resistance to A. flavus seed colonization, pod yield gene interaction. The inheritance ratio of 1 resistant: 15 susceptible and kernel yield in all the four crosses. Five promising resistant F3 was observed for Aspergillus flavus seed infection in all four F2 progenies (Line no. 10, 18, 318, 246 and 15) from four crosses as populations, which was further confirmed in backcross and F3 they recorded less than 11.5 µg/kg aflatoxin content for seed coat populations indicating the role of duplicate dominant gene interaction. and cotyledon resistance are potential source for aflatoxin resistance Correlation and variability were studied for yield, A. flavus seed along with better yield traits compared to checks. SNP based linkage mapping and QTL analysis for fibre quality and yield traits in Cotton Gossypium barbadense L. N. V. MOHAN KUMAR MAJOR ADVISOR: Dr. I. S. KATAGERI An investigation was undertaken to know the gene action and QTLs exhibited complimentary epistasis. The 63 K Illumina Infinium SNP responsible for fibre quality and yield traits in Gossypium barbadense bead chip used for genotyping, found 525 homozygous polymorphic (extra long staple cotton). 1329 F2, 174 B1 and 185 B2 plants were markers between parents. These polymorphic markers were used in generated from true F plants of diverse parents, Suvin and BCS 23- 1 genotyping of 185 F2 plants. Linkage map was constructed with 18-7 in 2015-16, were evaluated along with parents and F1 during 460 SNP loci on 21 chromosomes spanning 1219.4 cM with an kharif 2016-17 at the Main Agriculture Research Station, Dharwad. average marker density of 2.7 cM at LOD value of 5.0. Single marker F1 plants were confirmed thorough polymorphic SSR markers at the