DNA MARKER-ASSISTED IDENTIFICATION OF GENOMIC REGIONS CONTROLLING ANTHESIS-SILKING
| dc.contributor.advisor | Gangappa, E. | |
| dc.contributor.author | NEELAVVA, KONANAVAR | |
| dc.date.accessioned | 2018-03-09T06:31:59Z | |
| dc.date.available | 2018-03-09T06:31:59Z | |
| dc.date.issued | 2016-12-27 | |
| dc.description.abstract | An investigation was undertaken to identify QTLs/SSR markers linked to genomic regions controlling Anthesis-Silking Interval (ASI) and grain yield and to unravel the genetics of ASI, grain yield and its components using generation mean analysis and Triple Test Cross analysis from summer 2013 to rabi 2014 at Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bengaluru. Two polymorphic inbred lines MAI-349 and BGD-89 were involved to generate F2 mapping population and this F2 population was genotyped with 40 SSR markers which had discriminated the inbred lines MAI-349 and BGD-89. The corresponding F2:3 progeny families were evaluated for ASI, grain yield and its component traits. Single marker analysis revealed association of eleven SSR markers controlling ASI which had explained phenotypic variance ranging from 5.41 to 12.50% and nine markers linked with grain yield plant-1 and had explained phenotypic variance ranging from 5.99 to 8.20%. Two QTLs linked to ASI detected on chromosome 5 and 7 showed dominant and overdominant gene actions, respectively, and were flanked by umc1523-umc1829 with phenotypic variance of 16.25% and umc2334-umc1792 with phenotypic variance of 5.51%, respectively. Three minor QTLs controlling grain yield were detected on chromosomes 6 (one QTL with phenotypic variance 4.29%) and 9 (two QTLs with phenotypic variance 7.71 and 6.73 %, respectively) displayed over-dominance and were flanked by the markers umc1014-umc1020, umc1387-phi065 and phi065-umc1714. Epistasis played a significant role in the inheritance of all the characters studied. Preponderance of additive component for all the traits indicated the utility of improvement through simple selection. Reciprocal recurrent selection can be an effective breeding method for the improvement of those characters controlled by dominant gene action | en_US |
| dc.identifier.other | Th-11584 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810041656 | |
| dc.language.iso | en | en_US |
| dc.pages | 130 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU | en_US |
| dc.sub | Genetics and Plant Breeding | en_US |
| dc.subject | null | en_US |
| dc.theme | DNA MARKER-ASSISTED IDENTIFICATION OF GENOMIC REGIONS CONTROLLING ANTHESIS-SILKING | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | DNA MARKER-ASSISTED IDENTIFICATION OF GENOMIC REGIONS CONTROLLING ANTHESIS-SILKING | en_US |
| dc.type | Thesis | en_US |