Field Evaluations of Improved Cotton Strains Resistant to the Cotton Fleahoppee12

Field tests showed that resistance in cotton strains to Pseudatomoscelis seriatus (Reuter) was related to the density of the trichomes. Thus strains homozygous for the H2H2 pubescent genes had significantly more fleahoppers than those with H1H1 genes or with the normal component of trichomes. Since the characters that imparted resistance could be transferred to improved strains, the efficacy of resistant strains in suppressing cotton fleahoppers was tested in large, replicated field tests. The resufts showed that resistant strains will effectively control the cotton fleahopper.