Evaluation of tolerance to phosphorus shortage in cowpea (Vigna unguiculata L. Walp) in Cuba.. I. nutritive solution culture.
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| Autores: | , , , , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2006 |
| Descripción: | Phosphorus deficiency is a major limitingfactor for symbiotic nitrogen fixation and grain yield oflegume crops in the tropics. Eight cowpea genotypes of wideuse in Cuba, were grown in hydroponics solutions; supplyingfrom 50 to 500 µM of P/plant/week. Nitrogen nutrition wasdependent upon symbiotic N2-fixation on adding of 4mmoles NO3/plant/week. Shoot growth was severely limitedby P deficiency, while dry weight of roots increased in bothgroups of plants. Nodule formation was severely decreasedby P deficiency, while specific nodule activity was increasedin the atmospheric N2 fixing plants. Growth response of N2plants was higher than that of NO3- fed plants due to P useefficiency, and revealed a the great large N2-fixationpotential of the specie. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/13453 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/agromeso/article/view/13453 |