Heritability and sources of Ascochyta blight resistance in common bean
Common bean germ plasm (Phaseolus vulgaris) with intermediate Ascochyta blight (caused by Phoma exigua var. diversispora) resistance has been identified at CIAT. The heritability and inheritance of resistance to this pathogen were studied in three resistant climbing bean sources. Narrow-sense herita...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Scientific Societies
1993
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/43532 |
| _version_ | 1855530838649733120 |
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| author | Hanson, PM Pastor Corrales, Marcial A. Kornegay, Julia L. |
| author_browse | Hanson, PM Kornegay, Julia L. Pastor Corrales, Marcial A. |
| author_facet | Hanson, PM Pastor Corrales, Marcial A. Kornegay, Julia L. |
| author_sort | Hanson, PM |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Common bean germ plasm (Phaseolus vulgaris) with intermediate Ascochyta blight (caused by Phoma exigua var. diversispora) resistance has been identified at CIAT. The heritability and inheritance of resistance to this pathogen were studied in three resistant climbing bean sources. Narrow-sense heritability estimates determined by the regression of the F2-derived F4 line means on F2-derived F3 line means from crosses Carioca (S) × G 10817 (R) and G 10088 (S) × G 10747 (R) were low to moderate (0.19–0.64), depending on the cross and character measured. A generation means analysis of resistant parents G 10817 and G 10823 crossed with the susceptible parent G 12488 indicated that additive, dominance, and epistatic effects were important in the inheritance of resistance. Evaluation of lines for resistance should be conducted in advanced generations in replicated trials. |
| format | Journal Article |
| id | CGSpace43532 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1993 |
| publishDateRange | 1993 |
| publishDateSort | 1993 |
| publisher | Scientific Societies |
| publisherStr | Scientific Societies |
| record_format | dspace |
| spelling | CGSpace435322024-05-01T08:18:17Z Heritability and sources of Ascochyta blight resistance in common bean Hanson, PM Pastor Corrales, Marcial A. Kornegay, Julia L. phaseolus vulgaris ascochyta phoma disease resistance heritability resistencia a la enfermedad heredabilidad Common bean germ plasm (Phaseolus vulgaris) with intermediate Ascochyta blight (caused by Phoma exigua var. diversispora) resistance has been identified at CIAT. The heritability and inheritance of resistance to this pathogen were studied in three resistant climbing bean sources. Narrow-sense heritability estimates determined by the regression of the F2-derived F4 line means on F2-derived F3 line means from crosses Carioca (S) × G 10817 (R) and G 10088 (S) × G 10747 (R) were low to moderate (0.19–0.64), depending on the cross and character measured. A generation means analysis of resistant parents G 10817 and G 10823 crossed with the susceptible parent G 12488 indicated that additive, dominance, and epistatic effects were important in the inheritance of resistance. Evaluation of lines for resistance should be conducted in advanced generations in replicated trials. 1993 2014-09-24T08:42:16Z 2014-09-24T08:42:16Z Journal Article https://hdl.handle.net/10568/43532 en Open Access Scientific Societies |
| spellingShingle | phaseolus vulgaris ascochyta phoma disease resistance heritability resistencia a la enfermedad heredabilidad Hanson, PM Pastor Corrales, Marcial A. Kornegay, Julia L. Heritability and sources of Ascochyta blight resistance in common bean |
| title | Heritability and sources of Ascochyta blight resistance in common bean |
| title_full | Heritability and sources of Ascochyta blight resistance in common bean |
| title_fullStr | Heritability and sources of Ascochyta blight resistance in common bean |
| title_full_unstemmed | Heritability and sources of Ascochyta blight resistance in common bean |
| title_short | Heritability and sources of Ascochyta blight resistance in common bean |
| title_sort | heritability and sources of ascochyta blight resistance in common bean |
| topic | phaseolus vulgaris ascochyta phoma disease resistance heritability resistencia a la enfermedad heredabilidad |
| url | https://hdl.handle.net/10568/43532 |
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