Major research carried out by the IRCT on the origin and detection of sticky cottons

Gutknecht J.J., Fournier J.. 1987. Major research carried out by the IRCT on the origin and detection of sticky cottons. In : Cotton production, harvesting and ginning with special emphasis on fiber quality. ICAC. Washington : ICAC, 19-31. Plenary Meeting of the International Cotton Advisory Committee. 46, Brussels, Belgique, 12 Octobre 1987/16 Octobre 1987.

Résumé : The stickiness of cottons is due to a pollution of the fiber caused by the sugar dejections secreted by two homoptera: a type of aphid, Aphis gossypii (GLOV) and the aleurode Bemlsia tabaci (GENN). These sugar substances are called "entomological sugars," as opposed to the sugars normally contained in the fiber, which are designated as "physiological sugars." The way sugars form a deposit, at first in the cotton ball, then, after infestation by the Bemisia and Aphis parasites, on the fiber itself, after the ball has matured, is a phenomenon that is now better known. These observations result in particular from the research directed by the IRCT, according to which several types of sugars can be distinguished: 1-on the fiber inside the boll: Physiological sugars physiological polyols. After infestation of the fibers: entomological sugars; 2-by the parasites, after maturation of the boll, enzymatic degradation sugars.

Auteurs et affiliations

• Gutknecht J.J.
• Fournier J.

Source : Cirad-Agritrop (https://agritrop.cirad.fr/606572/)

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