ABSTRACT
Insects cause a substantial loss in cotton productivity and increase production cost. Genetic resistance to insects is essential for successful cotton production and profitability. The MAR-7 germplasm was evaluated at 10 locations throughout Texas. The strains test was evaluated at 10 locations, the Early Field Planting (EFP) test at 4 locations, and the Uniform MAR test (UMAR) at ten locations. In addition to grades and yield data, progressive increases in levels of resistance to insects in the MAR germplasm were measured and quantified by mapping mature plants from the tests conducted in Corpus Christi and Hillsboro under insecticide and no-insecticide treatments. Results included yield and earliness from the UMAR and EFP tests and the insecticide treated and non-treated tests, and boll retention.
|