Evaluation of tolerance to phosphorus shortage in cowpea (Vigna unguiculata L. Walp) in Cuba.. I. nutritive solution culture.
Kaydedildi:
| Yazarlar: | , , , , |
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| Materyal Türü: | artículo original |
| Durum: | Versión publicada |
| Yayın Tarihi: | 2006 |
| Diğer Bilgiler: | 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. |
| Ülke: | Portal de Revistas UCR |
| Kurum: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Dil: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/13453 |
| Online Erişim: | https://revistas.ucr.ac.cr/index.php/agromeso/article/view/13453 |