Djaboutou C. M., Alabi S.O., Echewku C.A., Orakwue F. C.
Abstract
Twenty-five cotton lines comprising 9 multi-adversity resistant lines from USA and 16 Fs lines derived from crosses between the variety S295 and the multi-adversity
lines were evaluated for two years at one location in Samaru in Nigeria. The objective of this study was to assess genetic variability and correlations among some
agronomic quality traits for genetic improvement. The line variance was significant except for plant height to the first fruiting branch, number of fruiting branches
and number of bolls. The Line x year interaction was significant only for lint percent, seed index and seed cotton yield. In all cases the genotypic and phenotypic
correlations have the same trends. Based on results the seed cotton yield was positively, phenotypically correlated with yield components, lint percent (0.385), number
of bolls (0.343) and number of fruiting branches (0.160). The presence of a wide range variability in the materials studied could be exploited to improve lines of interest
Key words:
Correlation, genetic variability, genotypic, phenotypic, variance.