Studies on bacterial WILT I. inheritance of resistance to Pseudomonas solanacearum in tomato
Variance component analysis of the PI,P2,F1 ,F2,B1,B2 generations of a cross between resis- tant (V-4) and susceptible (Walter)tomato cultivars indicated a narrow-sense heritability of wilt resistance of 42% and a broad-sense heritability of 53%, with a degree of dominance of 75%. A diallel cross w...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Faculty of Agriculture, University of Malaya
1976
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| Online Access: | http://psasir.upm.edu.my/id/eprint/34059/ http://psasir.upm.edu.my/id/eprint/34059/1/5.%2034059%20studies%20on%20bacterial.pdf |
| _version_ | 1848847668859633664 |
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| author | Graham, K. M. Yap, T. C. |
| author_facet | Graham, K. M. Yap, T. C. |
| author_sort | Graham, K. M. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Variance component analysis of the PI,P2,F1 ,F2,B1,B2 generations of a cross between resis- tant (V-4) and susceptible (Walter)tomato cultivars indicated a narrow-sense heritability of wilt resistance of 42% and a broad-sense heritability of 53%, with a degree of dominance of 75%.
A diallel cross was performed among six tomato cultivars, Walter, CRA-66, H-7741, Venus, VC-4 and Llanos de Colee, representing a range of susceptibility/resistance of 99.5 to 20.8 on a disease resistance scale. The results indicated that general combining ability (GCA) was considerably more important than specific combining ability (SCA), suggesting that inheri- tance of wilt resistance was due mainly to additive gene action. Among the six cultivars, Llanos de Colee, VC-4 and Venus showedgood GCA.
Wilt resistance could attain a high level in a breeding procedure of repeated selfing and sel- ection, followed by intercrossing of resistant selections.
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| first_indexed | 2025-11-15T09:22:16Z |
| format | Article |
| id | upm-34059 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:22:16Z |
| publishDate | 1976 |
| publisher | Faculty of Agriculture, University of Malaya |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-340592015-04-22T07:28:38Z http://psasir.upm.edu.my/id/eprint/34059/ Studies on bacterial WILT I. inheritance of resistance to Pseudomonas solanacearum in tomato Graham, K. M. Yap, T. C. Variance component analysis of the PI,P2,F1 ,F2,B1,B2 generations of a cross between resis- tant (V-4) and susceptible (Walter)tomato cultivars indicated a narrow-sense heritability of wilt resistance of 42% and a broad-sense heritability of 53%, with a degree of dominance of 75%. A diallel cross was performed among six tomato cultivars, Walter, CRA-66, H-7741, Venus, VC-4 and Llanos de Colee, representing a range of susceptibility/resistance of 99.5 to 20.8 on a disease resistance scale. The results indicated that general combining ability (GCA) was considerably more important than specific combining ability (SCA), suggesting that inheri- tance of wilt resistance was due mainly to additive gene action. Among the six cultivars, Llanos de Colee, VC-4 and Venus showedgood GCA. Wilt resistance could attain a high level in a breeding procedure of repeated selfing and sel- ection, followed by intercrossing of resistant selections. Faculty of Agriculture, University of Malaya 1976 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/34059/1/5.%2034059%20studies%20on%20bacterial.pdf Graham, K. M. and Yap, T. C. (1976) Studies on bacterial WILT I. inheritance of resistance to Pseudomonas solanacearum in tomato. Malaysian Agricultural Research, 5. pp. 1-8. ISSN 0126-5458 |
| spellingShingle | Graham, K. M. Yap, T. C. Studies on bacterial WILT I. inheritance of resistance to Pseudomonas solanacearum in tomato |
| title | Studies on bacterial WILT I. inheritance of resistance to Pseudomonas solanacearum in tomato |
| title_full | Studies on bacterial WILT I. inheritance of resistance to Pseudomonas solanacearum in tomato |
| title_fullStr | Studies on bacterial WILT I. inheritance of resistance to Pseudomonas solanacearum in tomato |
| title_full_unstemmed | Studies on bacterial WILT I. inheritance of resistance to Pseudomonas solanacearum in tomato |
| title_short | Studies on bacterial WILT I. inheritance of resistance to Pseudomonas solanacearum in tomato |
| title_sort | studies on bacterial wilt i. inheritance of resistance to pseudomonas solanacearum in tomato |
| url | http://psasir.upm.edu.my/id/eprint/34059/ http://psasir.upm.edu.my/id/eprint/34059/1/5.%2034059%20studies%20on%20bacterial.pdf |