Caracterización y selección de familias S1 de alcaucil a través de técnicas de análisis multivariado

Abstract

Globe artichoke S 1 families characterization and selection by the use of multivariate analysisThe globe artichoke breeding programs should respond to the demands of both fresh and processed market requirements. This fact implies that a great number of characteristics have to be considered when selection is taking place, making necessary the aid of multivariate analysis. Two sets of S 1 families were evaluated in order to know the contribution of these characters to the total variation and to identify homogeneous genotypes within a set of families. Twenty six vegetative and productive characters were evaluated in a single plant, in the experimental field of the Agronomy Faculty, Rosario National University, located in Zavalla (33º 01' S, 60º 53' W). Leaf length, leaf width, number and weight of secondary artichokes, height of the first artichoke, weight of the receptacle and harvest period yielding were the traits that best explained the total variation. Only 9 families were selected among the 30 S 1 families. These are the most appropriate to continue the inbreeding process. Cluster analysis could be considered a valuable tool to make an early selection in this species.

Phenotypic variability in a population of globe artichoke

“…Intra and interpopulation phenotypic variability in artichoke populations propagated by seeds have been found in studies conducted in the Mediterranean region (MAURO et al, 2009;PANDINO et al, 2011) and Argentina (COINTRY et al, 1999;CRAVERO et al, 2002). Variability in the population assessed may be attributable to the high rate or segregation observed in allogamous plants in sexual propagation and expresses the potential of this population in responding to the selection, allowing signifi cant genetic gains.…”

“…Plant selection aiming at genetic breeding requires analysis of a high number of characters (CRAVERO et al, 2002). In this sense, multivariate analysis is frequently employed, since it allows the interpretation and simultaneous evaluation of many characters as well as the use of existing interactions among a set of variables (CRUZ, 2006), as well as, and the estimation of genetic divergence between accesses.…”

Processamento térmico de fundos de alcachofra (Cynara cardunculus scolymus L) sob alto vácuo

“…O peso médio obtido foi 165,82 ± 2,92 g para os botões. Esse resultado é compatível com os obtidos por Cravero et al (2002), no qual o peso médio dos botões secundários variaram de 113,5 a 182,2 g e de 199 a 243,8 g para os botões principais, em estudo realizado com 30 famílias diferentes de alcachofra (Cynara scolymus L.).…”

“…da Etiópia e do Egito, apreciada na Europa Mediterrânea e que conquista cada vez mais o paladar dos brasileiros (CRAVERO et al, 2002). A alcachofra é, na verdade, uma flor imatura que pertence à família Asteraceae, a mesma das margaridas e dos girassóis.…”

“…A parte mais apreciada da flor é o coração ou fundo, bastante usado na produção de conservas e para a preparação de vários pratos. Das pétalas, come-se a parte mais carnuda, e os talos também podem ser aproveitados (CRAVERO et al, 2002).…”