Cotton fiber quality evaluation for cotton breeders and biotechnologists

Héquet Eric. 2000. Cotton fiber quality evaluation for cotton breeders and biotechnologists. Montpellier : CIRAD-CA-COTON, 17 p.

Résumé : An analysis of the variability in fiber properties measured with the HVI and the AFIS revealed that within-field variations in fiber properties were very large. Commercial harvesting, module storage, and ginning greatly reduced the variability; however, this "mixing process" is not possible throughout critical stages of cotton breeding. Consequently, the variability within a breeder sample is generally much higher than the variability within a bale. Results to date indicate that a threshold level of precision in fiber property measurements taken from breeders' samples requires 4 replications on micronaire measurements and 10 replications on length and strength measurements. With appropriate quality control procedures, both the HVI and the AFIS are shown to have acceptable short-term repeatability. However, the tendency for the AFIS instruments to exhibit "level shifts" over longer periods of use makes it necessary to monitor and reconcile measurements over time. The fact that a variety development program is a long-term project makes this a critical issue .

Auteurs et affiliations

• Héquet Eric, CIRAD-CA-COTON (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/607048/)

Métriques

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