Data/hora: 08/06/2024 09:58:55

Provedor de dados: 	36	
País: 	Brazil	
Título: 	Phenotypic and genotypic characterization and compatibility among genotypes to select elite clones of cupuassu	
Autores: 	ALVES,Rafael Moysés; SILVA,Carlos Rogério de Sousa; ALBUQUERQUE,Paulo Sérgio Bevilaqua de; SANTOS,Vinicius Silva dos.	
Data: 	2017-07-01	
Ano: 	2017	
Palavras-chave: 	Microsatellites; Tropical fruit; Diversity; Plant breeding; Theobroma grandiflorum.	
Resumo: 	ABSTRACT The expansion of the genetic base of cultivated materials is an ongoing activity of the cupuassu (Theobroma grandiflorum) breeding program. However, the parents involved need to be genotypically and phenotypically characterized to ensure compatibility of crossings, as well as to assist in the selection of more promising individuals for hybridization. This study aimed to identify and select T. grandiflorum clones that are compatible and genetically divergent using tools such as the estimates of genotypic, phenotypic, and combined distances, as well as the compatibility rates among clones. The genetic distance analysis of the clones was performed with 14 heterologous microsatellite primers of cocoa (Theobroma cacao) that amplify the DNA of cupuassu. Phenotypic characterization was based on 14 variables related to fruit production. The joint dissimilarity matrix was obtained by means of the sum of the phenotypic and molecular dissimilarity matrices. The intra- and inter-clonal compatibility was estimated through controlled crossings. A low correlation was noted between the dissimilarity matrices based on the molecular and agronomic data. As for compatibility, all clones were self-incompatible, with different compatibility rates when crossed. The compatibility index was strongly influenced by the degree of relationship of the clones. It was possible to identify and select the most promising sets of cupuassu clones to be used in breeding programs, despite their genetic relationship.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300175	
Editor: 	Instituto Nacional de Pesquisas da Amazônia	
Relação: 	10.1590/1809-4392201602104	
Formato: 	text/html	
Fonte: 	Acta Amazonica  v.47 n.3 2017	
Fonte: 	info:eu-repo/semantics/openAccess