Data/hora: 05/06/2024 10:22:20

Provedor de dados: | 65
País: | Brazil
Título: | A temperature response function for modeling leaf growth and development of the African violet (Saintpaulia ionantha Wendl.)
Autores: | Streck,Nereu Augusto.
Data: | 2004-02-01
Ano: | 2004
Palavras-chave: | Temperature; Model; Leaf growth; Leaf development; African violet.
Resumo: | Response functions used in crop simulation models are usually different for different physiological processes and cultivars, resulting in many unknown coefficients in the response functions. This is the case of African violet (Saintpaulia ionantha Wendl.), where a generalized temperature response for leaf growth and development has not been developed yet. The objective of this study was to develop a generalized nonlinear temperature response function for leaf appearance rate and leaf elongation rate in African violet. The nonlinear function has three coefficients, which are the cardinal temperatures (minimum, optimum, and maximum temperatures). These coefficients were defined as 10, 24, and 33ºC, based on the cardinal temperatures of other tropical species. Data of temperature response of leaf appearance rate and leaf elongation rate in African violet, cultivar Utah, at different light levels, which are from published research, were used as independent data for evaluating the performance of the nonlinear temperature response function. The results showed that a generalized nonlinear response function can be used to describe the temperature response of leaf growth and development in African violet. These results imply that a reduction in the number of input data required in African violet simulation models is possible.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000100009
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/S0103-84782004000100009
Formato: | text/html
Fonte: | Ciência Rural  v.34 n.1 2004
Fonte: | info:eu-repo/semantics/openAccess