Browsing by Author "MEGHANA, J."
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ThesisItem Embargo CHARACTERIZATION OF DOUBLED HAPLOID RICE LINES FOR PRODUCTIVITY AND THE PYRAMIDED DROUGHT ADAPTIVE TRAITS(2023-01-11) MEGHANA, J.; MOHAN RAJU, B.Numerous pertinent drought adaptive features control the exceedingly complex phenomenon of drought tolerance. Therefore, the ideal way to improve drought tolerance is to pyramid all the relevant drought adaptive features onto an agronomically superior background. Pyramiding traits using traditional breeding methods takes longer than it does with doubled haploid (DH) technology. Towards pyramiding drought adaptive traits, TIL 14 (Trait introgressed line) having root and water use efficiency traits was crossed with cellular level tolerance donor line, AC 39000 and anthers from the resultant F1 plants were cultured in-vitro and spontaneously developed DH lines were produced previously. In the present study, developed DH lines were phenotyped for pyramided drought adaptive traits such as cellular level tolerance (CLT), root and water use efficiency (WUE) to check whether or not the pyramided traits found in them. Accordingly, wide variability found among DH lines for pyramided drought adaptive traits and some of the DH lines had all the pyramided traits with the traits value similar to and in some cases, more than the parents. Further, DH lines also showed wider variability for growth and productivity both under aerobic and puddled condition with greater stability. Based on traits value and grain yield, two best DH lines namely, DH-121 and DH-22 were identified as potential lines. When these best DH lines were examined for stress response, they were found to be tolerant to both PEG induced osmotic stress and NaCl induced salinity stress over their susceptible counterparts suggesting the importance of pyramiding drought adaptive traits together.ThesisItem Open Access ECONOMIC EVALUATION OF PMKSY-WD AND KFW WATERSHED PROJECTS IN KOLAR DISTRICT OF KARNATAKA(University of Agricultural Sciences, Bangalore, 2020-10-24) MEGHANA, J.; MAHADEVAIAH, G. S.The study was undertaken in Srinivaspura taluk, Kolar district, Karnataka to analyse the economic benefits derived by watershed beneficiaries in Yeldur nala sub watershed project and Mudimadagu watershed project implemented under Pradhan Mantri Krishi Sinchayi Yojana-Watershed Development (PMKSY-WD) and Credit Institute for Reconstruction-watershed project (KfW-WP), respectively. Primary data was collected from randomly selected 50 farmers from each project which includes 30 watershed beneficiaries and 20 non-beneficiaries. Data Collected was analysed using Simpson’s index, cost and returns analysis and resource use efficiency tools. Higher crop diversity was found among beneficiaries of both PMKSY-WD and KfW watershed areas (WA) with Simpson’s index values of 0.85 and 0.84, respectively compared to nonwatershed area (NWA). Production, productivity and net returns of the major crops was higher in WA than in NWA. Annual income per farm was found higher in both PMKSYWD and KfW-WP WA with Rs. 2,94,446 and Rs. 3,15,450 acre-1 respectively than in NWA. Results of resource use efficiency depicted that inputs were efficiently used in WA compared to NWA. Lack of awareness about benefits of watershed technology among the beneficiary farmers and poor participation by the farmers during training programmes conducted by the implementing agencies were the major constraints faced during the implementation of watershed projects. Results have sufficiently indicated that the watershed activities benefited farmers by enhancing their yield, net returns and overall income. There is a need for formation of watershed farmers’ associations for the maintenance of soil and water conservation structures by watershed development department.