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Evaluation of genetic diversity of eight cotton varieties (Gossypium hirsutum l.) turks introduced in Benin

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Author: 
Marius G. SINHA, Moussibaou C. DJABOUTOU, Serge S. HOUEDJISSIN, Florent J-B. QUENUM, Gilles H. CACAÏ, Corneille AHANHANZO
Abstract: 

The present study was carried out to select the varieties with high yield potential and better technological characteristics adapted to the international market to improve the competitiveness and sustainability of cotton production in Benin.12 cotton varieties of whicheight (8) varieties introduced in Benin by Nazilli Cotton Research Institute (ICRC) of Turkey Republic in 2013 and four (4) beninese varieties was evaluated. The field experiment was carried out under three main CRA-CF Permanent Experimental Centers (CPEs), representing the predominant area of cotton growing with 90% of national production during the cropping season 2014-2015. The results revealed very highly significant differences between varieties for yields in kg per hectare of seed cotton (Rdt), ginning yield (ER) and weight of 100 seeds or Seed index (SI) (P <0.001) with the exception of early seed cotton production (R1/RT).The analysis on the technological characters revealed six significantly different groups (p <0.000) with an average percentage of mature fibers of 84.5%. Three Beninese varieties E 956-2 (+ 2.3%), H 782-3 (+ 1.5%) and K 768-3 (+ 1.1%) showed a good percentage of mature fibers. On the other hand, the varieties of Turkey NAZILLI 143 (-1%), AYHAN 107 (-1%) and NAZILLI M-503 (-1,3%) have very low fiber maturities. The technological characteristics of the fiber are determined on the one hand by the variety and on the other hand influenced by the environment, the cultural conditions and the quality of the ginning. A highly positive significant relationship was found between fiber tenacity (Str) with Upper High Mean Length (UHML), fiber uniformity (UI), Micronaire index (IM), fiberbrilliance (Rd)andfiber yield (Rdt). During future breeding program the varieties of Turkey may be kept in mind during making selection to improve cotton yield in Benin.

EDITOR-IN-CHIEF

        

            Prof. Dr. ISMAIL YILDIRIM

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