Genetic advances of new maize hybrids - Mexico, DF (Mexico) CIMMYT : 2003 - p. 230-231 - Printed
In l956, the Central American Cooperative Program for the Improvement of Crops and Animals (PCCMCA) began its regional evaluation of maize as a collaborative effort to evaluate cultivars generated by national programs and private companies operating in Central America, Mexico, and the Caribbean. In the analysis and interpretation of this research, the interaction genotype x environment (G x E) deserves special attention for the selection and recommendation of genotypes under different systems or production conditions. The best characterization of the stability of the genotypes evaluated in different places and years was achieved through the additive main effects and multiplicative interactions (AMMI) model (Zobel et al. l988). N ormalized response (RNi), or reliability, is a methodology that allows the comparison of the cultivars against the check using the data of several years (Eskridge and Mumm 1992; Eskridge et al. 1993). The objective of this study was to determine the genetic advances of new maize hybrids of white grain in relation to yield, stability, and reliability and normalized response compared to the regional check (HB 83), throughout different environments and years.
631.53 / BOO