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ARTÍCULO
TITULO

Agronomic parameters of eight cotton (Gossypium hirsutum) cultivars obtained in Cuba. Cien. Inv. Agr. (In English) 34(2):115-122.

E. Vinent    
Odelín Fajardo    

Resumen

The correlations of the following variables were determined for eight cultivars of cotton (Gossypium hirsutum) obtained in Cuba: feather and raw cotton yields, boll weight, plant height and plant perimeter and the number of bolls per plant. Feather and raw cotton yields were negatively correlated with plant height; in this same way, plant height and plant perimeter correlated with the number of harvested bolls per plant. Boll weight did not correlate with the studied variables. By means of applying multivariate analysis techniques and variance analysis, promising cultivars were selected. Significant differences were obtained among cultivars using seven biological parameters: feather and raw cotton yields, plant height and plant perimeter, ginning rate, boll weight and the number of harvested bolls per plant. The highest feather and raw cotton yields (5,575 y 2,353 kg·ha-1, respectively) were achieved with the cultivar L-48, followed bythe cultivars L-3, L-6 and L-44 and the highest ginning rate (42%) was achieved with L-48. In conclusion, cotton cultivars L-48; L-3; L-6 and L-44 were the most promising cultivars, and will be further tested under commercial conditions. Se determinaron las correlaciones de las variables: rendimiento de algodón (Gossypium hirsutum) rama y pluma, peso por bellota, altura y perímetro de la planta y el número de bellotas por planta a ocho cultivares de algodón obtenidos en Cuba. El rendimiento de algodón rama y el pluma se correlacionaron negativamente con la altura de la planta. Del mismo modo se correlacionaron negativamente la altura y el perímetro de la planta con el número de bellotas cosechadas por planta. El peso de la bellota no estuvo correlacionado con las variables estudiadas. Mediante la aplicación de técnicas de análisis multivariados y análisis de varianza se seleccionaron los cultivares más promisorios. Hubo diferencias estadísticamente significativas entre los cultivares en los siete parámetros biológicos estudiados, lo que correspondieron a rendimiento de algodón en rama y pluma, altura y el perímetro de la planta, tasa de desmotado, peso de bellotas y el número de bellotas cosechadas por planta. El mejor rendimiento de algodón en rama y pluma (5.575 y 2.353 kg·ha-1respectivamente) se logró con el cultivar L- 48; seguido por los cultivares L-3, L-6 y L-44. La más alta tasa de desmotado (42%) se alcanzó con el cultivar L-48.

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