Abstract

JORGE SUAREZ, Héctor; MENENDEZ SIERRA, Antonio; ATENCIO VALDESPINO, Randy  and  DELGADO MORA, Irenaldo. Selection of sugar cane genotypes in areas with environmental stress. Ctro. Agr. [online]. 2018, vol.45, n.3, pp. 66-72. ISSN 0253-5785.

The results are presented in areas with environmental stress (Capellanía and La Palmita) in the Ingenio Ofelina of Panama, whose limiting factors are drought and bad drainage respectively. 34 genotypes were studied, 24 in Locality one and 29 in the two, coinciding 18 in both sites. The trials were evaluated in the first shoot strain, the harvest variables studied were, t ha-1 cane, percentage of pol in cane and t pol ha-1. As a result, the analysis of main components explained 85.50 % of the total variation and allowed to characterize the localities. The cultivars with the best performance in Locality one were B0072, CT-14, E07-11, CT-41 and E07-14, while the cultivars CP89-2143, CT-14 and E07-11 stood out in the 2, coinciding in both sites E07-11 and CT-14. The highest contribution to the total phenotypic variance corresponded to the environmental effects for the percentage of pol in cane (83.15 %) and t pol ha-1 (47.62 %) while for the cane ha-1 it was the interaction genotype environment.

Keywords : cultivars; limiting factors; bad drainage; Saccharum officinarum; genotypes; drought.

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