Heterosis and Combining Ability for Productivity Related Traits in Tomato (Solanum lycopersicum L.)
| dc.contributor.advisor | P.R. Dharmatti | |
| dc.contributor.author | Akshay Angadi | |
| dc.date.accessioned | 2016-11-10T17:40:26Z | |
| dc.date.available | 2016-11-10T17:40:26Z | |
| dc.date.issued | 2011 | |
| dc.description.abstract | The investigation was conducted to assess the heterosis and combining ability for productivity and bacterial wilt resistance in tomato during 2009-10 in the Department of Horticulture, UAS, Dharwad. The experimental material consisted of fourteen parents including five female and nine male parents. Forty five F1 hybrids were produced in a line × tester mating design for heterosis and combining ability studies. Female parents were selected with diversity for bacterial wilt and male parents with diversity for horticultural traits. Hybrids showed significant differences for all the characters studied except pH of the fruit juice. Significant per se performance and economic heterosis in desirable direction was recorded in several crosses. The crosses DMT-1 × Arka Alok, DMT-1 × DMT-2 and DM-3 × DMT-2 expressed significant heterosis over commercial check (Ruchi) for economic characters like yield per plant and bacterial wilt resistance. When the analysis of variance for combining ability with respect to yield was looked into, it revealed that line x tester contribution was higher than that of lines and testers contribution individually. Among lines, DMT-1 was good general combiner and among testers, DMT-2 was good general combiner. Here SCA variance was greater than GCA indicating the predominance of non-additive gene action. DMT-1 × Arka Alok, DMT- 1 × DMT-2 and DM-3 × DMT-2 crosses had significant SCA effects for yield per plant. DM-3 × DS-1 and DM-5 × IMP-B were suitable for processing. The present study reveals that heterosis breeding is useful for development of tomato through exploitation of non-additive gene action. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/84994 | |
| dc.publisher | UAS, Dharwad | en_US |
| dc.research.problem | Heterosis and Combining Ability for Productivity Related Traits in Tomato (Solanum lycopersicum L.) | en_US |
| dc.sub | Horticulture | en_US |
| dc.subject | Horticulture | en_US |
| dc.theme | Heterosis and Combining Ability for Productivity Related Traits in Tomato (Solanum lycopersicum L.) | en_US |
| dc.title | Heterosis and Combining Ability for Productivity Related Traits in Tomato (Solanum lycopersicum L.) | en_US |
| dc.type | Thesis | en_US |