Agronomic qualities of genetic pyramids of common bean developed for multiple-disease-resistance
Multiple co-infections by different pathogens on common bean (Phaseolus vulgaris L.) affect its productivity and cause complete crop loss in susceptible varieties. Therefore, gene pyramiding using marker assisted selection (MAS) and backcrossing, provide alternative cost-effective control measures t...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
African Journals Online
2017
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/89550 |
| _version_ | 1855535778540552192 |
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| author | Okii, D. Tukamuhabwe, Phineas Tusiime, Geoffrey Talwana, Herbert A.L. Odong, T. Mukankusi, Clare Mugisha Male, A. Amongi, Winnyfred Sebuliba, Sulaiman Paparu, P. Nkalubo, Stanley T. Ugen, Michael Adrogu Buah, Saaka S.J. Gepts, Paul L. |
| author_browse | Amongi, Winnyfred Buah, Saaka S.J. Gepts, Paul L. Male, A. Mukankusi, Clare Mugisha Nkalubo, Stanley T. Odong, T. Okii, D. Paparu, P. Sebuliba, Sulaiman Talwana, Herbert A.L. Tukamuhabwe, Phineas Tusiime, Geoffrey Ugen, Michael Adrogu |
| author_facet | Okii, D. Tukamuhabwe, Phineas Tusiime, Geoffrey Talwana, Herbert A.L. Odong, T. Mukankusi, Clare Mugisha Male, A. Amongi, Winnyfred Sebuliba, Sulaiman Paparu, P. Nkalubo, Stanley T. Ugen, Michael Adrogu Buah, Saaka S.J. Gepts, Paul L. |
| author_sort | Okii, D. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Multiple co-infections by different pathogens on common bean (Phaseolus vulgaris L.) affect its productivity and cause complete crop loss in susceptible varieties. Therefore, gene pyramiding using marker assisted selection (MAS) and backcrossing, provide alternative cost-effective control measures to bean diseases. However, in the process of developing pyramids, linkage drags were likely to affect the qualities of progeny lines, hence, special attention was paid to this situation. The objective of this study was thus to assess the agronomic qualities of advanced genetic pyramids developed from a four-way cross for multiple disease resistance. The disease resistance genes (R) pyramided from four parents were: Co42 and Co-5 from G2333; Phg-2 from MEX54; Pythium ultimum Dennis from MLB49-89A and I & bc3 from MCM5001. The progeny lines were planted in an incomplete block design, and replicated thrice for two seasons (2015A and 2015B) in fields at CIAT, Kawanda in Uganda. Agronomic traits were highly heritable (0.6), except number of pods per plant (< 0.3). Backcrossing generated high-yielding bean lines, with 270 - 290 seed per plant and early maturity (95-100 days). Nine superior lines with desirable qualities, such as earliness (95 days), high seed rate (290 seeds per plant), and climbing ability, were obtained. Pyramiding R genes did not affect yield traits, except time to flowering and number of flower buds per plant due to transgressive segregation. |
| format | Journal Article |
| id | CGSpace89550 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | African Journals Online |
| publisherStr | African Journals Online |
| record_format | dspace |
| spelling | CGSpace895502025-03-13T09:45:01Z Agronomic qualities of genetic pyramids of common bean developed for multiple-disease-resistance Okii, D. Tukamuhabwe, Phineas Tusiime, Geoffrey Talwana, Herbert A.L. Odong, T. Mukankusi, Clare Mugisha Male, A. Amongi, Winnyfred Sebuliba, Sulaiman Paparu, P. Nkalubo, Stanley T. Ugen, Michael Adrogu Buah, Saaka S.J. Gepts, Paul L. backcrossing phaseolos vulgaris l. plant diseases disease resistance yield electrophoresis segregation heritability retrocruzamiento enfermedades de las plantas resistencia a la enfermedad electroforesis segregación heredabilidad Multiple co-infections by different pathogens on common bean (Phaseolus vulgaris L.) affect its productivity and cause complete crop loss in susceptible varieties. Therefore, gene pyramiding using marker assisted selection (MAS) and backcrossing, provide alternative cost-effective control measures to bean diseases. However, in the process of developing pyramids, linkage drags were likely to affect the qualities of progeny lines, hence, special attention was paid to this situation. The objective of this study was thus to assess the agronomic qualities of advanced genetic pyramids developed from a four-way cross for multiple disease resistance. The disease resistance genes (R) pyramided from four parents were: Co42 and Co-5 from G2333; Phg-2 from MEX54; Pythium ultimum Dennis from MLB49-89A and I & bc3 from MCM5001. The progeny lines were planted in an incomplete block design, and replicated thrice for two seasons (2015A and 2015B) in fields at CIAT, Kawanda in Uganda. Agronomic traits were highly heritable (0.6), except number of pods per plant (< 0.3). Backcrossing generated high-yielding bean lines, with 270 - 290 seed per plant and early maturity (95-100 days). Nine superior lines with desirable qualities, such as earliness (95 days), high seed rate (290 seeds per plant), and climbing ability, were obtained. Pyramiding R genes did not affect yield traits, except time to flowering and number of flower buds per plant due to transgressive segregation. 2017 2017-11-30T20:40:41Z 2017-11-30T20:40:41Z Journal Article https://hdl.handle.net/10568/89550 en Open Access African Journals Online Okii, D.; Tukamuhabwa, P.; Tusiime, G.; Talwana, H.; Odong, T.; Mukankusi, Clare; Male, A.; Amongi, Winnyfred; Sebuliba, Sulaiman; Paparu, P.; Nkalubo, S.; Ugen, M.; Buah, S.; GEPTS, P.. 2017. Agronomic qualities of genetic pyramids of common bean developed for multiple-disease-resistance . African Crop Science Journal . African Crop Science Society, 25(4): 457-472. |
| spellingShingle | backcrossing phaseolos vulgaris l. plant diseases disease resistance yield electrophoresis segregation heritability retrocruzamiento enfermedades de las plantas resistencia a la enfermedad electroforesis segregación heredabilidad Okii, D. Tukamuhabwe, Phineas Tusiime, Geoffrey Talwana, Herbert A.L. Odong, T. Mukankusi, Clare Mugisha Male, A. Amongi, Winnyfred Sebuliba, Sulaiman Paparu, P. Nkalubo, Stanley T. Ugen, Michael Adrogu Buah, Saaka S.J. Gepts, Paul L. Agronomic qualities of genetic pyramids of common bean developed for multiple-disease-resistance |
| title | Agronomic qualities of genetic pyramids of common bean developed for multiple-disease-resistance |
| title_full | Agronomic qualities of genetic pyramids of common bean developed for multiple-disease-resistance |
| title_fullStr | Agronomic qualities of genetic pyramids of common bean developed for multiple-disease-resistance |
| title_full_unstemmed | Agronomic qualities of genetic pyramids of common bean developed for multiple-disease-resistance |
| title_short | Agronomic qualities of genetic pyramids of common bean developed for multiple-disease-resistance |
| title_sort | agronomic qualities of genetic pyramids of common bean developed for multiple disease resistance |
| topic | backcrossing phaseolos vulgaris l. plant diseases disease resistance yield electrophoresis segregation heritability retrocruzamiento enfermedades de las plantas resistencia a la enfermedad electroforesis segregación heredabilidad |
| url | https://hdl.handle.net/10568/89550 |
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