Data/hora: 05/06/2024 11:12:42

Provedor de dados: 	63	
País: 	Brazil	
Título: 	Ploidy level and caffeine content in leaves of Coffea	
Autores: 	Silvarolla,Maria Bernadete; Mazzafera,Paulo; Lima,Marinez Muraro Alves de; Medina Filho,Herculano Penna; Fazuoli,Luiz Carlos.	
Data: 	1999-07-01	
Ano: 	1999	
Palavras-chave: 	Caffeine; Coffea; Leaves; Ploidy.	
Resumo: 	Several species of Coffea and varieties of C. arabica differing in chromosome number had their caffeine content determined in the leaves. For Coffea arabica var. "Angustifolia", var. "Caturra" and var. "Icatu", it was observed caffeine decrease from the haploid (2n = 22) to tetraploid leaves (2n = 44). Caffeine in the tetraploid "Angustifolia" was decreased by 50% when compared to the haploid. Caffeine reduction was also observed in leaves of C. canephora var. "Kouilou" as chromosome number was increased (2n = 22 ® 2n = 44). In this case, caffeine in the leaves of the diploid genotype was close to 4 times higher than in the tetraploid. On the other hand it was observed an increase of the alkaloid when the chromosome number was doubled in the C. canephora var. "Robusta".	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161999000300021	
Editor: 	São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"	
Relação: 	10.1590/S0103-90161999000300021	
Formato: 	text/html	
Fonte: 	Scientia Agricola  v.56 n.3 1999	
Fonte: 	info:eu-repo/semantics/openAccess