The resistance and tolerance of different cocoa varieties to cocoa swollen-shoot virus in Ghana
The resistance and tolerance to infection with cocoa swollen-shoot virus (virulent strain A) of forty-five and thirty-eight cocoa progenies respectively was estimated using a manual inoculation method. Resistance was estimated from the proportion of inoculated seedlings which developed symptoms, and tolerance from the severity of these symptoms during a 4-month period. Resistance was found among Nanay, Iquitos and Scavina, all Upper Amazon types; and an inter-Nanay cross was outstandingly resistant and offers scope for improvement by breeding. Some Amazon-Amazon and Trinitario-Amazon progenies showed tolerance, especially those with Trinitario T9/21 as a parent. Some progenies seem sufficiently promising for field testing to select varieties suitable for planting in those areas in Ghana where swollen-shoot disease is epidemic
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1970
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| Sujets: | THEOBROMA CACAO, PROGENIE, COCOA SWOLLEN SHOOT VIRUS, VIROSIS, RESISTENCIA A LA ENFERMEDAD, INOCULACION MANUAL, GHANA, |
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KOHA-OAI-BVE:671622020-02-03T21:34:17ZThe resistance and tolerance of different cocoa varieties to cocoa swollen-shoot virus in Ghana 85824 Legg, J.T. 82762 Kenten, R.H. 1970The resistance and tolerance to infection with cocoa swollen-shoot virus (virulent strain A) of forty-five and thirty-eight cocoa progenies respectively was estimated using a manual inoculation method. Resistance was estimated from the proportion of inoculated seedlings which developed symptoms, and tolerance from the severity of these symptoms during a 4-month period. Resistance was found among Nanay, Iquitos and Scavina, all Upper Amazon types; and an inter-Nanay cross was outstandingly resistant and offers scope for improvement by breeding. Some Amazon-Amazon and Trinitario-Amazon progenies showed tolerance, especially those with Trinitario T9/21 as a parent. Some progenies seem sufficiently promising for field testing to select varieties suitable for planting in those areas in Ghana where swollen-shoot disease is epidemicThe resistance and tolerance to infection with cocoa swollen-shoot virus (virulent strain A) of forty-five and thirty-eight cocoa progenies respectively was estimated using a manual inoculation method. Resistance was estimated from the proportion of inoculated seedlings which developed symptoms, and tolerance from the severity of these symptoms during a 4-month period. Resistance was found among Nanay, Iquitos and Scavina, all Upper Amazon types; and an inter-Nanay cross was outstandingly resistant and offers scope for improvement by breeding. Some Amazon-Amazon and Trinitario-Amazon progenies showed tolerance, especially those with Trinitario T9/21 as a parent. Some progenies seem sufficiently promising for field testing to select varieties suitable for planting in those areas in Ghana where swollen-shoot disease is epidemicTHEOBROMA CACAOPROGENIECOCOA SWOLLEN SHOOT VIRUSVIROSISRESISTENCIA A LA ENFERMEDADINOCULACION MANUALGHANAAnnals of Applied Biology (RU) |
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biblioteca |
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| topic |
THEOBROMA CACAO PROGENIE COCOA SWOLLEN SHOOT VIRUS VIROSIS RESISTENCIA A LA ENFERMEDAD INOCULACION MANUAL GHANA THEOBROMA CACAO PROGENIE COCOA SWOLLEN SHOOT VIRUS VIROSIS RESISTENCIA A LA ENFERMEDAD INOCULACION MANUAL GHANA |
| spellingShingle |
THEOBROMA CACAO PROGENIE COCOA SWOLLEN SHOOT VIRUS VIROSIS RESISTENCIA A LA ENFERMEDAD INOCULACION MANUAL GHANA THEOBROMA CACAO PROGENIE COCOA SWOLLEN SHOOT VIRUS VIROSIS RESISTENCIA A LA ENFERMEDAD INOCULACION MANUAL GHANA 85824 Legg, J.T. 82762 Kenten, R.H. The resistance and tolerance of different cocoa varieties to cocoa swollen-shoot virus in Ghana |
| description |
The resistance and tolerance to infection with cocoa swollen-shoot virus (virulent strain A) of forty-five and thirty-eight cocoa progenies respectively was estimated using a manual inoculation method. Resistance was estimated from the proportion of inoculated seedlings which developed symptoms, and tolerance from the severity of these symptoms during a 4-month period. Resistance was found among Nanay, Iquitos and Scavina, all Upper Amazon types; and an inter-Nanay cross was outstandingly resistant and offers scope for improvement by breeding. Some Amazon-Amazon and Trinitario-Amazon progenies showed tolerance, especially those with Trinitario T9/21 as a parent. Some progenies seem sufficiently promising for field testing to select varieties suitable for planting in those areas in Ghana where swollen-shoot disease is epidemic |
| format |
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| topic_facet |
THEOBROMA CACAO PROGENIE COCOA SWOLLEN SHOOT VIRUS VIROSIS RESISTENCIA A LA ENFERMEDAD INOCULACION MANUAL GHANA |
| author |
85824 Legg, J.T. 82762 Kenten, R.H. |
| author_facet |
85824 Legg, J.T. 82762 Kenten, R.H. |
| author_sort |
85824 Legg, J.T. |
| title |
The resistance and tolerance of different cocoa varieties to cocoa swollen-shoot virus in Ghana |
| title_short |
The resistance and tolerance of different cocoa varieties to cocoa swollen-shoot virus in Ghana |
| title_full |
The resistance and tolerance of different cocoa varieties to cocoa swollen-shoot virus in Ghana |
| title_fullStr |
The resistance and tolerance of different cocoa varieties to cocoa swollen-shoot virus in Ghana |
| title_full_unstemmed |
The resistance and tolerance of different cocoa varieties to cocoa swollen-shoot virus in Ghana |
| title_sort |
resistance and tolerance of different cocoa varieties to cocoa swollen-shoot virus in ghana |
| publishDate |
1970 |
| work_keys_str_mv |
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| _version_ |
1756056938553016320 |