SciELO - Scientific Electronic Library Online

 
vol.37 número3Mapeo por intervalos compuestos generalizados entrega una mejorada eficiencia en el análisis de loci que afectan características continuas no-normalesLa influencia de los atributos físicos de la tierra en su precio: el caso de la Provincia de Talca, Chile índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Ciencia e investigación agraria

versión On-line ISSN 0718-1620

Resumen

MARTICORENA, Marta; BRAMARDI, Sergio  y  DEFACIO, Raquel. Characterization of maize populations in different environmental conditions by means of Three-Mode Principal Components Analysis. Cienc. Inv. Agr. [online]. 2010, vol.37, n.3, pp.91-103. ISSN 0718-1620.  http://dx.doi.org/10.4067/S0718-16202010000300008.

Characterization of 31 native populations of maize conserved at the germplasm bank of the PNLA Pergamino Experimental Station, Argentina, was achieved by evaluating 10 quantitative attributes in two different environmental situations. The experimental design generated three-way or three-mode data, repeated observations of a set of attributes for a set of individuals in different conditions. The information was displayed in a three-dimensional array, and the structure of the data was explored using Three-Mode Principal Component Analysis, the Tucker-2 Model. A group of populations was identified that displayed homogeneous behavior in the two environments with respect to the following traits: ear length, prolificacy, grains per meter, yield and 1000 kernel weight. However, another group of populations displayed opposite behavior for the traits of plant height and ear insertion height in the different environment conditions and is indicative of the existence of genotype-environment interaction. In conclusion, Three-Mode Principal Component Analysis is an important tool for characterizing plant genetic resources when their phenotypic values are likely to be affected by environmental conditions.

Palabras clave : Germplasm Bank; genotype-environment interaction; Tucker-2 Model.

        · resumen en Español     · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons