Data/hora: 21/06/2024 07:45:41

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 03/01/1994
Data da última atualização: | 03/01/1994
Autoria: | CAMACHO-B, S. E.; KAUFMANN, R.; HALL, A. E.
Afiliação: | Department of Plant Sciences, University of California, Riverside California 92502.
Título: | Leaf water potential response to transpiration by citrus
Ano de publicação: | 1974
Fonte/Imprenta: | Physiologie Plantarum, v.3, p.101-105, 1974.
Idioma: | Inglês
Conteúdo: | This paper reports on fruther studies of a model for interpreting leaf water potential data for Citrus. Experimental data confirmed the assumption that ratio of vapor pressure deficit to leaf difusion resistance adequately estimates transpiration when leaf-to-air temperature diferences are small. Data collected diurnally indicated that the relationship between leaf water potential and transpiration followed a sequence of steady stats without hysteresis. No difference in water transport characteristics was foun for VAlencia orange on three rootstocks in well-watered soil, but the two rootstocks Cleopatra mandarin and Rangpur gave slightly greater leaf water stress in VAlencia orange leaves than `troyer' citrage rootstock at high transpiration rates under mild soil water deficits. In laboratory studies, previously unstressed seedings had higher leaf water potentials than field trees at equivalent transpiration rates. After several drying cycles, however, leaf water potentials were smilar to those observed in the field.
Palavras-Chave: | Citros; Porta-enxerto; Transporte de agua.
Thesagro: | Absorção; Seca.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (15422-1) - ADC - SP - -- - S5544 -  - S5544 - DIS