Fig. 5.

Mechanical properties of cotton fibre as functions of the extensin CoMPP signal. A. Mechanical properties were determined with the High Volume Instrument (HVI) by CIRAD (France) from 5 g of mature cotton of each line. A sampled fibre is held at a random point and two ends are aligned to measure the length. B. Strength is measured physically by clamping a fibre bundle at known distance and then pulled away at a constant speed until the fibre bundle breaks; the distance it travelled before breakage, shown in percentage to the set distance, was defined as elongation (C). D. The fineness of cotton fibre is evaluated by the Micronaire value. The underlying data and statistical treatment of the physical properties of which the means are used here were published by Rajasundaram et al. (2014).