Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 322

Full Length Research Paper

Phenological, morphological and agronomic characterization of sixteen genotypes of cotton plant (Gossypium hirsutum L.) in rainfed condition in Benin

Emmanuel SEKLOKA
  • Emmanuel SEKLOKA
  • Laboratory of Phytotechny, Plant Breeding and Plant Protection Department of Plant Production, Faculty of Agriculture, University of Parakou, , P. O. Box 123 Parakou, Republic of Benin.
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Albert Kora SABI
  • Albert Kora SABI
  • Laboratory of Phytotechny, Plant Breeding and Plant Protection Department of Plant Production, Faculty of Agriculture, University of Parakou, , P. O. Box 123 Parakou, Republic of Benin.
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Valerien Amegnikin ZINSOU
  • Valerien Amegnikin ZINSOU
  • Laboratory of Phytotechny, Plant Breeding and Plant Protection Department of Plant Production, Faculty of Agriculture, University of Parakou, , P. O. Box 123 Parakou, Republic of Benin.
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Abib ABOUDOU
  • Abib ABOUDOU
  • Laboratory of Phytotechny, Plant Breeding and Plant Protection Department of Plant Production, Faculty of Agriculture, University of Parakou, , P. O. Box 123 Parakou, Republic of Benin.
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Cyrille Kanli NDOGBE
  • Cyrille Kanli NDOGBE
  • Laboratory of Phytotechny, Plant Breeding and Plant Protection Department of Plant Production, Faculty of Agriculture, University of Parakou, , P. O. Box 123 Parakou, Republic of Benin.
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Leonard AFOUDA
  • Leonard AFOUDA
  • Laboratory of Phytotechny, Plant Breeding and Plant Protection Department of Plant Production, Faculty of Agriculture, University of Parakou, , P. O. Box 123 Parakou, Republic of Benin.
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Lamine BABA-MOUSSA
  • Lamine BABA-MOUSSA
  • Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cell Biology, Faculty of Sciences and Technologies, University of Abomey-Calavi, Cotonou, Republic of Benin.
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  •  Received: 06 October 2017
  •  Accepted: 22 December 2017
  •  Published: 28 February 2018

Abstract

In Benin, cotton cultivation is rain fed. There is a need to develop varieties adapted to the current diversity of growing conditions caused by climate disruptions. To identify types of varieties that may be used in crossing to adapt varietal offer to climatic disturbances, sixteen genotypes of diverse origins were characterized with a randomized complete block design with four replications. Fifteen agro-morphological variables allowed to describe the genetic variability using descriptive statistics and multivariate analyses. Results showed high genetic variability and a structuration into three groups of genotypes tested. Plant height, length of fruiting branches, height to node ratio, flowering date and opening date of first bolls are the main distinguishing characteristics between groups (p<0.01). The first group consists of compact genotypes with stems, fruiting branches and internodes relatively short. These genotypes were early to flowering and opening bolls. The second group is composed of more vegetative genotypes, with medium size stems with long fruiting branches and long internodes; they are late to flowering and opening bolls. The third group consists of a tall genotype with short fruiting branches and long internodes; it is early to flowering and opening bolls. Compact and early genotypes could be used in crossbreeding to produce varieties adapted to the current climate disruptions.

 

Key words: Republic of Benin, genetic variability, crop maturity, growth habit, cotton breeding.