Photosynthesis of cassava and its relation to crop productivity
Cassava (Manihot esculenta Crantz) is a hot-climate crop that is also grown in cool areas of the highland tropics, where yields are reduced. The purpose of this study was to evaluate the effect of growth temperature on photosynthesis of two cassava cultivars from contrasting habitat and to determine...
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| Formato: | Conference Paper |
| Lenguaje: | Inglés |
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International Center for Tropical Agriculture
1993
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| Acceso en línea: | https://hdl.handle.net/10568/55692 |
| _version_ | 1855537525168275456 |
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| author | El-Sharkawy, Mabrouk A. Mejía de Tafur, María Sara Cadavid López, Luis Fernando |
| author_browse | Cadavid López, Luis Fernando El-Sharkawy, Mabrouk A. Mejía de Tafur, María Sara |
| author_facet | El-Sharkawy, Mabrouk A. Mejía de Tafur, María Sara Cadavid López, Luis Fernando |
| author_sort | El-Sharkawy, Mabrouk A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cassava (Manihot esculenta Crantz) is a hot-climate crop that is also grown in cool areas of the highland tropics, where yields are reduced. The purpose of this study was to evaluate the effect of growth temperature on photosynthesis of two cassava cultivars from contrasting habitat and to determine the relationship between yield and photosynthesis in a set of 15 field-grown cassava cultivars under rainfed conditions. Irrespective of the original habitat of cultivars, photosynthesis was substantially reduced in leaves developed in a cool climate as compared with warm-climate leaves. Cool-climate leaves partially recovered their photosynthetic capacity after 7 d acclimatization in a warm climate. The hot-climate cultivar showed a broad optimum temperature from 30 to 40\248C, while the cool-climate cultivar showed an upward shift in optimum temperature in the acclimatize and warm-climate leaves. In field-grown cassava, maximum net photosynthesis of upper canopy leaves was greater than 40 umol CO2 m(-2S-1) when measured in high rainfall season and the rates did not show light saturation up to 1800 umol m(-2S-1) PAR. The seasonal average net photosynthesis of upper canopy leave was significantly correlated with both root yield and harvestable biomass. It was concluded that selection for high photosynthesis in parental materials may lead to high yields when combined with other yield determinants. |
| format | Conference Paper |
| id | CGSpace55692 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1993 |
| publishDateRange | 1993 |
| publishDateSort | 1993 |
| publisher | International Center for Tropical Agriculture |
| publisherStr | International Center for Tropical Agriculture |
| record_format | dspace |
| spelling | CGSpace556922024-01-09T09:49:26Z Photosynthesis of cassava and its relation to crop productivity El-Sharkawy, Mabrouk A. Mejía de Tafur, María Sara Cadavid López, Luis Fernando manihot esculenta photosynthesis varieties crop yield productivity fotosíntesis variedades rendimiento de cultivos productividad Cassava (Manihot esculenta Crantz) is a hot-climate crop that is also grown in cool areas of the highland tropics, where yields are reduced. The purpose of this study was to evaluate the effect of growth temperature on photosynthesis of two cassava cultivars from contrasting habitat and to determine the relationship between yield and photosynthesis in a set of 15 field-grown cassava cultivars under rainfed conditions. Irrespective of the original habitat of cultivars, photosynthesis was substantially reduced in leaves developed in a cool climate as compared with warm-climate leaves. Cool-climate leaves partially recovered their photosynthetic capacity after 7 d acclimatization in a warm climate. The hot-climate cultivar showed a broad optimum temperature from 30 to 40\248C, while the cool-climate cultivar showed an upward shift in optimum temperature in the acclimatize and warm-climate leaves. In field-grown cassava, maximum net photosynthesis of upper canopy leaves was greater than 40 umol CO2 m(-2S-1) when measured in high rainfall season and the rates did not show light saturation up to 1800 umol m(-2S-1) PAR. The seasonal average net photosynthesis of upper canopy leave was significantly correlated with both root yield and harvestable biomass. It was concluded that selection for high photosynthesis in parental materials may lead to high yields when combined with other yield determinants. 1993 2015-01-28T14:21:42Z 2015-01-28T14:21:42Z Conference Paper https://hdl.handle.net/10568/55692 en Open Access International Center for Tropical Agriculture El-Sharkawy, Mabrouk A.; Mejía de Tafur, María Sara; Cadavid López, Luis Fernando. 1993. Photosynthesis of cassava and its relation to crop productivity. In: Roca, William M.; Thro, Ann Marie (eds.). International Scientific Meeting Cassava Biotechnology Network (1, 1992, Cartagena de Indias, Colombia). Proceedings. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. p. 314-324. (Working document no. 123) |
| spellingShingle | manihot esculenta photosynthesis varieties crop yield productivity fotosíntesis variedades rendimiento de cultivos productividad El-Sharkawy, Mabrouk A. Mejía de Tafur, María Sara Cadavid López, Luis Fernando Photosynthesis of cassava and its relation to crop productivity |
| title | Photosynthesis of cassava and its relation to crop productivity |
| title_full | Photosynthesis of cassava and its relation to crop productivity |
| title_fullStr | Photosynthesis of cassava and its relation to crop productivity |
| title_full_unstemmed | Photosynthesis of cassava and its relation to crop productivity |
| title_short | Photosynthesis of cassava and its relation to crop productivity |
| title_sort | photosynthesis of cassava and its relation to crop productivity |
| topic | manihot esculenta photosynthesis varieties crop yield productivity fotosíntesis variedades rendimiento de cultivos productividad |
| url | https://hdl.handle.net/10568/55692 |
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