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Abstract
The study was conducted at the IER (Institut d’Economie Rurale) agricultural research stations of Finkolo (11°16′5″N 5°30′40″W) and N'Tarla (12°35'N 5°42'W) during the 2019-2020 cropping season. The objective was to analyze the correlations between some morpho-physiological and agronomic characteristics of cotton genotypes of different origin. Seven cotton genotypes constituting the plant material were distributed in a Randomised Complete Block Design (RCBD) with 6 replications in each site. The morpho-physiological traits observed were plant height, insertion of first sympodial branches, number of monopodial branches, days to 50% flowering and maturity. Concerning the agronomic traits, observations were made on the yield, the boll weight, the number of plants, bolls and sympodial branches. The results obtained show the good performance of the varieties BRS293 and X442-A for yield in both areas. Significant correlations (positive or negative) at P=0.01 and 0.05 were observed between yield and all the traits observed in both areas taken together and in Finkolo. On the other hand, at N'Tarla we observed significant positive correlations at P=0.01 between yield, average bolls weight and total number of plants per hectare, and significant negative correlations for the days to 50% flowering. These correlations may be useful in the cotton breeding program for the improvement of the yield.
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