Article
Interacción genotipo x ambiente y análisis de estabilidad en genotipos de amaranto (Amaranthus spp.)
Fecha
2011Registro en:
REVISTA INTERNACIONAL DE BOTÁNICA EXPERIMENTAL INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY
Autor
García Pereyra, J.
Valdés Lozano, CGS
Alejandre Iturbide, G.
Villanueva Fierro, I.
Alvarado Gómez, OG
Institución
Resumen
Five genotypes of amaranth were evaluated: four of
Amaranthus hypochondriacus L. (collect 153-5-3, 653, 655 and Criollo
Tlaxcala) and one of A. cruentus L. genotype 33. Studies were
conducted in the cycle of spring-summer (PV) 2000 in Marín, N.
L., and PV 2001 and PV 2002 in El Valle del Guadiana, Dgo. A
completely randomized design with two repetitions was used, with
factorial arrangement using split-plots, divided in space and time.
The study population densities (DP) were 125000; 62500; 41666;
32500 and 18666 plants/ha. They analyzed (1) the stability of the
genotypes exposed to different environments following Eberhart &
Russell (1966), and (2) the grouping of the materials by their yield
of grain (RG) and dry forage (FS) by the method of Francis & Kannenberg
(1978). Study of interaction G x A indicated that the evaluated
materials tended to behave differently in the various localities
and evaluated population densities. For RG, genotypes 153-5-3 and
653 were superior to the rest of the genotypes with 30.5 and 29.3
g/plant to a DP of 18666 plants/ha. In yield of FS, genotypes A.
cruentus 33 and 153-5-3 were superior to the other genotypes with
150 and 98 g/plant, respectively, to a DP of 18666 plants/ha at the
two study sites.