Genetic studies in segregating single cross F4, F5 and double cross F3 and F4 populations of tomato (Lycopersicon esculentum Mill.)
| dc.contributor.advisor | R.V.Patil | |
| dc.contributor.author | Vinayaka M.Patil | |
| dc.date.accessioned | 2016-10-24T18:11:14Z | |
| dc.date.available | 2016-10-24T18:11:14Z | |
| dc.date.issued | 2007 | |
| dc.description.abstract | A field experiment was conducted at Department of Horticulture, University of Agricultural Sciences Dharwad, to quantify the magnitude of genetic variability generated in segregating generations, to isolate desirable segregants and response to selection for yield and quality characters in SCF4, SCF5, DCF3 and DCF4 generations of tomato (Lycopersicon esculentum Mill.). Mean performance of DCF4 for yield per plant was not much higher than SCF4 s. Of the 14 entries the best entry was single cross F4 DTHVI-5 which exhibited higher yield per plant. For yield per plant among DCF3, DTH4U-1 x DTH5N-3 entry has greater genetic variability, while in DCF4, DTH5N-3 x DTHVI-5 entry has exhibited greater genetic variability within SCF4, DTH4U-1 entry has greater genetic variability. In SCF5, DTHVI-5 had moderately higher genetic variability. The extent of genetic variation manifested by DCF4 was of higher magnitude than SCF4 as depicted from the higher mean values over the SCF4 for the yield per plant. The frequency of economic and desirable segregants was higher in DCs than SCs. For the traits number of fruits per plant, fruit weight and yield per plant DCF3 entries DTHCS-7 x DTH5N-3 I (12-3) and DTHCS-7 x DTH5N-3 I (13-5) gave higher number of desirable segregants and within DCF4 DTHCS-7 x DTH5N-3 I (12-3)/ K- 06 I (19-2) and DTH5N-3 x DTHVI-5 I (10-10)/K-06 I (18-14) entries gave higher desirable segregants. For the traits number of fruits per plant, fruit weight and yield per plant SCF4 entries DTHCS-7 I (57-1) and DTHVI-5 I (49-5) gave higher number of desirable segregants and within SCF5 DTHVI-5 II (29-5) /K-06 I (13-13) and DTHCS-7 I (37-1)/K-06 II (9-12) entries gave higher desirable segregants. At both genotypic and phenotypic levels fruit diameter expressed higher significant positive correlation. Path analysis showed that number of fruits per plant and fruit weight had highly positive direct effect on fruit yield which also had highly significant positive correlation with fruit yield. Other traits such as diameter of fruits and plant height at 45 DAT and at final harvest exhibited fairly positive direct effect. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/81631 | |
| dc.publisher | UAS, Dharwad | en_US |
| dc.research.problem | Genetic studies in segregating single cross F4, F5 and double cross F3 and F4 populations of tomato (Lycopersicon esculentum Mill.) | en_US |
| dc.sub | Horticulture | en_US |
| dc.subject | Horticulture | en_US |
| dc.theme | Genetic studies in segregating single cross F4, F5 and double cross F3 and F4 populations of tomato (Lycopersicon esculentum Mill.) | en_US |
| dc.title | Genetic studies in segregating single cross F4, F5 and double cross F3 and F4 populations of tomato (Lycopersicon esculentum Mill.) | en_US |
| dc.type | Thesis | en_US |