Genotypic and environmental contributions to lint yield, yield components, and fiber quality in upland cotton from Arkansas variety trials over a 19‐year period

Lint yields and their underlying yield components can be substantially influenced by genotype environment. Thus, the objectives of current study were to quantify genotypic environmental contributions lint yield, components, fiber quality in multi-site variety trials conducted Arkansas over a 19-year period, identify traits most strongly associated with long-term trends aforementioned traits. Annual assessments included seeds per hectare (SPH), intra-boll parameters. Production environment accounted for higher percentage all variability 15 out 19 years. However, four years identified which greater than contributions. Genotype was dominant driver percent, index, seed score, fibers seed, density, length, strength, uniformity. SPH, micronaire. Correlations between varied from year year, even when primary driver. A regression function that utilized index SPH stronger more consistent indicator variation any single component. Finally, show percent has increased significantly past years, whereas declined 19.6% cotton varieties highest yields.