Susceptibility of cassava varieties to disease caused by Sri Lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus-free planting material
Cassava (Manihot esculenta Crantz) is a rainfed, smallholder-produced crop in mainland Southeast Asia, and is currently facing a serious challenge posed by the introduction of cassava mosaic disease (CMD). This study assessed the susceptibility of popular Asian varieties to CMD, yield penalties asso...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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MDPI
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/120940 |
| _version_ | 1855542189565673472 |
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| author | Malik, Al Imran Sophearith, Sok Delaquis, Erik Cuéllar, Wilmer Jose Jiménez Polo, Jenyfer Newby, Jonathan Craig |
| author_browse | Cuéllar, Wilmer Jose Delaquis, Erik Jiménez Polo, Jenyfer Malik, Al Imran Newby, Jonathan Craig Sophearith, Sok |
| author_facet | Malik, Al Imran Sophearith, Sok Delaquis, Erik Cuéllar, Wilmer Jose Jiménez Polo, Jenyfer Newby, Jonathan Craig |
| author_sort | Malik, Al Imran |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cassava (Manihot esculenta Crantz) is a rainfed, smallholder-produced crop in mainland Southeast Asia, and is currently facing a serious challenge posed by the introduction of cassava mosaic disease (CMD). This study assessed the susceptibility of popular Asian varieties to CMD, yield penalties associated with the disease, and the efficacy of selecting clean or asymptomatic plants as seed for the following season. Field experiments evaluated agronomic management practices (ie, fertilizer application, use of symptomatic and asymptomatic seed stakes) in Cambodia with six to nine popular varieties over three seasons under natural disease pressure. Popular cassava varieties KU50 and Huaybong60 showed superior CMD tolerance, with consistently fewer symptomatic plants, lower disease progress measures, and higher yields. Plants demonstrating symptoms at early stages of development, ie, 60 days after planting, yielded significantly less than those developing symptoms later (ie, 270 DAP) or not at all. Plants grown from clean stems yielded on average 20% to 2.7-fold higher than those grown from symptomatic planting material. A yield decline of~ 50% was recorded with symptomatic planting materials of susceptible varieties (eg, SC8,~ 25 t ha− 1) over successive years. The findings emphasize that farmers could use positive selection by choosing asymptomatic plants to significantly reduce yield losses. |
| format | Journal Article |
| id | CGSpace120940 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1209402025-12-08T10:29:22Z Susceptibility of cassava varieties to disease caused by Sri Lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus-free planting material Malik, Al Imran Sophearith, Sok Delaquis, Erik Cuéllar, Wilmer Jose Jiménez Polo, Jenyfer Newby, Jonathan Craig plant viruses yield factors disease control virus de las plantas factores de rendimiento control de enfermedades Cassava (Manihot esculenta Crantz) is a rainfed, smallholder-produced crop in mainland Southeast Asia, and is currently facing a serious challenge posed by the introduction of cassava mosaic disease (CMD). This study assessed the susceptibility of popular Asian varieties to CMD, yield penalties associated with the disease, and the efficacy of selecting clean or asymptomatic plants as seed for the following season. Field experiments evaluated agronomic management practices (ie, fertilizer application, use of symptomatic and asymptomatic seed stakes) in Cambodia with six to nine popular varieties over three seasons under natural disease pressure. Popular cassava varieties KU50 and Huaybong60 showed superior CMD tolerance, with consistently fewer symptomatic plants, lower disease progress measures, and higher yields. Plants demonstrating symptoms at early stages of development, ie, 60 days after planting, yielded significantly less than those developing symptoms later (ie, 270 DAP) or not at all. Plants grown from clean stems yielded on average 20% to 2.7-fold higher than those grown from symptomatic planting material. A yield decline of~ 50% was recorded with symptomatic planting materials of susceptible varieties (eg, SC8,~ 25 t ha− 1) over successive years. The findings emphasize that farmers could use positive selection by choosing asymptomatic plants to significantly reduce yield losses. 2022-07-12 2022-08-25T10:59:26Z 2022-08-25T10:59:26Z Journal Article https://hdl.handle.net/10568/120940 en Open Access application/pdf MDPI Malik, A.I.; Sophearith, S.; Delaquis, E.; Cuellar, W.; Jimenez, J.; Newby, J. (2022) Susceptibility of cassava varieties to disease caused by Sri Lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus-free planting material. Agronomy 12(7): 1658. 18 p. ISSN: 2073-4395 |
| spellingShingle | plant viruses yield factors disease control virus de las plantas factores de rendimiento control de enfermedades Malik, Al Imran Sophearith, Sok Delaquis, Erik Cuéllar, Wilmer Jose Jiménez Polo, Jenyfer Newby, Jonathan Craig Susceptibility of cassava varieties to disease caused by Sri Lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus-free planting material |
| title | Susceptibility of cassava varieties to disease caused by Sri Lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus-free planting material |
| title_full | Susceptibility of cassava varieties to disease caused by Sri Lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus-free planting material |
| title_fullStr | Susceptibility of cassava varieties to disease caused by Sri Lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus-free planting material |
| title_full_unstemmed | Susceptibility of cassava varieties to disease caused by Sri Lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus-free planting material |
| title_short | Susceptibility of cassava varieties to disease caused by Sri Lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus-free planting material |
| title_sort | susceptibility of cassava varieties to disease caused by sri lankan cassava mosaic virus and impacts on yield by use of asymptomatic and virus free planting material |
| topic | plant viruses yield factors disease control virus de las plantas factores de rendimiento control de enfermedades |
| url | https://hdl.handle.net/10568/120940 |
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