Resumo

JORGE SUAREZ, Héctor et al. Evaluation of Sugar Cane Genotypes in different Environments in Ingenio Ofelina, Republic of Panama. Ctro. Agr. [online]. 2018, vol.45, n.1, pp. 24-33. ISSN 0253-5785.

ABSTRACT Knowledge and classification of the different test sites and their evaluation for the study of the genotypes becomes obligatory, in the breeding programs, also the knowledge of the adaptability of the cultivars allows to maximize their production. The objective of the work was to determine the adaptability and phenotypic stability of new cultivars introduced in CALESA by means of the Two-dimensional Representation method (Biplot), in two crops, as well as recommending those with the best agroproductive behavior under soil and climate conditions, of the Ingenio Ofelina. Twenty cultivars were planted in red Ferralitic, Brown without carbonate and Ferralitic quartzitic soils.The crop variables studied were: cane yield, pol yield and percentage of pol in cane. The environmental effect and the genotype-environment interaction were superior to that of the genotypes in the contribution to the total phenotypic variation. The cultivars E07-04, E07-09, BT84102 and Na56-42 in the three agrosugar characters were stable and adapted to the different environmental conditions and showed a sugar content similar or superior to the controls. The main component's analysis offered the formation of six different groups which correspond to the environments evaluated, there being a small approach between environment 2 and 4

Palavras-chave : environments; variance components; stability; heritability; Model AMMI.

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