Data/hora: 01/06/2024 16:45:49

Provedor de dados: | 95
País: | Brazil
Título: | Physiological quality of coffee seeds produced under different levels of solar radiation and maturation stages
Autores: | Baliza,Danielle Pereira; Caixeta,Franciele; Pinho,Édila Vilela de Resende Von; Cunha,Rodrigo Luz da; Martins,Denize Carvalho; Rosa,Sttela Dellyzete Veiga Franco da.
Data: | 2012-01-01
Ano: | 2012
Palavras-chave: | Coffea arabica; Germination; Vigor; Isoenzymes.
Resumo: | In Brazil, although the coffee plantations are predominantly grown under full sunlight, the use of agroforestry systems can lead to socioeconomic advantages, thus providing a favorable environment to the crop by promoting its sustainability as well as environmental preservation. However, there is a lack of information on physiological quality of the coffee seeds produced under different levels of solar radiation. Within this context, the objective of this study was to evaluate the influence of different levels of solar radiation and maturation stages on the physiological quality of coffee (Coffea arabica L.) seeds, cv. Acaiá Cerrado MG-1474. Three levels of solar radiation (plants grown under full sunlight; under plastic screens of 35% shading; and under plastic screens of 50% shading) and three maturation stages (cherry, greenish-yellow and green) were assessed. Physiological quality of seeds was assessed by using germination test, first count of germination, abnormal seedlings, dead seeds, and seedlings with open cotyledonary leaves. Electrophoretic analysis of isoenzymes catalase, esterase, superoxide dismutase and peroxidase was also performed. With the evolution of development the coffee seeds presents increases on physiological quality, and at its beginning the seeds show improvements on quality with the reduction of solar radiation.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300008
Editor: | Associação Brasileira de Tecnologia de Sementes
Relação: | 10.1590/S0101-31222012000300008
Formato: | text/html
Fonte: | Revista Brasileira de Sementes  v.34 n.3 2012
Fonte: | info:eu-repo/semantics/openAccess