We have highlighted that Acala cultivars have been general outliers with lower than average yield for their length and particularly strength values in US and AUS data sets (Fig. 1 and Fig. 2).
Acala cotton has been developed in western US with particular attention to fibre properties and Verticillium Wilt (Verticillium dahliae) resistance and for some period under a one cultivar law in CA ( Smith et al., 1999).