| Revista: | Anais da Academia Brasileira de Ciencias |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000435642 |
| ISSN: | 0001-3765 |
| Autores: | Delazari, Fábio T1 Assis, Igor R1 Cabrera, Diego F.V1 Ferreira, Mariane G1 Dias, Luiz E1 Rueda, Angelica1 Zanuncio, José C1 Silva, Derly J.H1 |
| Instituciones: | 1Universidade Federal de Vicosa, Centro de Ciencias Agrarias, Vicosa, Minas Gerais. Brasil |
| Año: | 2018 |
| Periodo: | Dic |
| Volumen: | 90 |
| Número: | 4 |
| Paginación: | 3541-3549 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, descriptivo |
| Resumen en inglés | The sweet potato is an alternative energy source, but its sustainability depends on efficient water use. The objective of this study was to evaluate sweet potato morpho-physiological characteristics, and water use efficiency (WUE). Irrigation depths of 50, 75, 100, and 125% of crop evapotranspiration (ETc) were applied. The morpho-physiological indicators, WUE, leaf area index (LAI), leaf water potential, leaf temperature, and leaf chlorophyll index (ICF), were evaluated. The WUE of the sweet potato cultivars increased until the 75% water depth of the ETc. The LAI of these cultivars increased with irrigation depth, with higher values at 100% of the ETc. The leaf water potential of the two sweet potato cultivars was lowest with the lower irrigation depth. Leaf temperature was closer to that of ambient temperatures in treatments with greater irrigation depth. The increase of the WUE with the greater accumulation of dry biomass is due to greater CO2 diffusion by stomata. The reduction in the growth of these plants is due to water stress limiting stomatal conductance, transpiration, leaf growth (LAI) and chlorophyll concentration, proportional to soil moisture conditions. The functional relationship between soil moisture and growth is essential to optimize irrigation management at different growth stages |
| Disciplinas: | Agrociencias |
| Palabras clave: | Hortalizas, Riego y drenaje, Camote, Temperatura foliar, Manejo de riego, Estrés hídrico, Ipomoea batatas, Convolvulaceae |
| Keyword: | Vegetables, Irrigation and drainage, Sweet potato, Leaf temperature, Irrigation management, Water stress, Ipomoea batatas, Convolvulaceae |
| Texto completo: | https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703541&lng=es&nrm=iso&tlng=en |
