Inheritance of fusarium wilts (Fusarium oxysporum F. sp. phaseoli) resistance in climbing beans
Fusarium wilt, caused by Fusarium oxysporum F. sp. phaseoli caused growers to abandon the most popular climbing bean cultivar, Umubano (G2333) in Rwanda. The present objective was to determine the nature of inheritance of fusarium wilt resistance and recommend a breeding strategy to introduce resist...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Academic Journals
2010
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/42982 |
| _version_ | 1855543054075691008 |
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| author | Musoni, Augustine Kimani, P.M. Narla, RD Buruchara, Robin Arani Kelly, James D. |
| author_browse | Buruchara, Robin Arani Kelly, James D. Kimani, P.M. Musoni, Augustine Narla, RD |
| author_facet | Musoni, Augustine Kimani, P.M. Narla, RD Buruchara, Robin Arani Kelly, James D. |
| author_sort | Musoni, Augustine |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Fusarium wilt, caused by Fusarium oxysporum F. sp. phaseoli caused growers to abandon the most popular climbing bean cultivar, Umubano (G2333) in Rwanda. The present objective was to determine the nature of inheritance of fusarium wilt resistance and recommend a breeding strategy to introduce resistance into susceptible cultivars. Two cultivars, vuninkingi (G685) and flora were donors of resistance to fusarium wilt whereas G2333 was highly susceptible. Injured root tips of 10-day old seedlings of the
parents, progenies of F1 and F2 (G2333 × G685) and (G2333 × Flora), backcrosses F2 (G685 × Flora) were inoculated with 106 conidia ml-1 of Rwandan isolate of F. oxysporum F. sp phaseoli (FOP-RW2) in a glasshouse. The disease severity was rated 28 days later using the CIAT scale of 1 - 9, where 1 - 3 represent resistant, 4 - 6 tolerant and 7 - 9 susceptible reactions. The chi-square analysis was performed to determine the Mendelian segregation ratios of resistant and susceptibility among the inoculated progenies. The F1 and the backcross progenies to the resistant parents segregated in the ratio of 1:0 as
did the F2 population (G685 × Flora). The F2 progenies segregated in the ratio of 3:1. The backcross progenies to the susceptible parent segregated in the ratio of 1:1. Resistance to fusarium wilt is conditioned by a single highly heritable major dominant gene. The resistance can be achieved by backcross breeding. |
| format | Journal Article |
| id | CGSpace42982 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2010 |
| publishDateRange | 2010 |
| publishDateSort | 2010 |
| publisher | Academic Journals |
| publisherStr | Academic Journals |
| record_format | dspace |
| spelling | CGSpace429822025-03-11T12:14:31Z Inheritance of fusarium wilts (Fusarium oxysporum F. sp. phaseoli) resistance in climbing beans Musoni, Augustine Kimani, P.M. Narla, RD Buruchara, Robin Arani Kelly, James D. phaseolus vulgaris fusarium oxysporum genetic resistance backcrossing phaselus vulgaris resistencia genética retrocruzamiento Fusarium wilt, caused by Fusarium oxysporum F. sp. phaseoli caused growers to abandon the most popular climbing bean cultivar, Umubano (G2333) in Rwanda. The present objective was to determine the nature of inheritance of fusarium wilt resistance and recommend a breeding strategy to introduce resistance into susceptible cultivars. Two cultivars, vuninkingi (G685) and flora were donors of resistance to fusarium wilt whereas G2333 was highly susceptible. Injured root tips of 10-day old seedlings of the parents, progenies of F1 and F2 (G2333 × G685) and (G2333 × Flora), backcrosses F2 (G685 × Flora) were inoculated with 106 conidia ml-1 of Rwandan isolate of F. oxysporum F. sp phaseoli (FOP-RW2) in a glasshouse. The disease severity was rated 28 days later using the CIAT scale of 1 - 9, where 1 - 3 represent resistant, 4 - 6 tolerant and 7 - 9 susceptible reactions. The chi-square analysis was performed to determine the Mendelian segregation ratios of resistant and susceptibility among the inoculated progenies. The F1 and the backcross progenies to the resistant parents segregated in the ratio of 1:0 as did the F2 population (G685 × Flora). The F2 progenies segregated in the ratio of 3:1. The backcross progenies to the susceptible parent segregated in the ratio of 1:1. Resistance to fusarium wilt is conditioned by a single highly heritable major dominant gene. The resistance can be achieved by backcross breeding. 2010 2014-09-24T07:58:52Z 2014-09-24T07:58:52Z Journal Article https://hdl.handle.net/10568/42982 en Open Access Academic Journals |
| spellingShingle | phaseolus vulgaris fusarium oxysporum genetic resistance backcrossing phaselus vulgaris resistencia genética retrocruzamiento Musoni, Augustine Kimani, P.M. Narla, RD Buruchara, Robin Arani Kelly, James D. Inheritance of fusarium wilts (Fusarium oxysporum F. sp. phaseoli) resistance in climbing beans |
| title | Inheritance of fusarium wilts (Fusarium oxysporum F. sp. phaseoli) resistance in climbing beans |
| title_full | Inheritance of fusarium wilts (Fusarium oxysporum F. sp. phaseoli) resistance in climbing beans |
| title_fullStr | Inheritance of fusarium wilts (Fusarium oxysporum F. sp. phaseoli) resistance in climbing beans |
| title_full_unstemmed | Inheritance of fusarium wilts (Fusarium oxysporum F. sp. phaseoli) resistance in climbing beans |
| title_short | Inheritance of fusarium wilts (Fusarium oxysporum F. sp. phaseoli) resistance in climbing beans |
| title_sort | inheritance of fusarium wilts fusarium oxysporum f sp phaseoli resistance in climbing beans |
| topic | phaseolus vulgaris fusarium oxysporum genetic resistance backcrossing phaselus vulgaris resistencia genética retrocruzamiento |
| url | https://hdl.handle.net/10568/42982 |
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