Generation mean analysis for nitrogen and phosphorus uptake, utilization, and translocation indexes at vegetative stage in tropical popcorn

摘要: Understanding the genetic control of nitrogen (N) and phosphorus (P) uptake, utilization, translocation is essential to develop superior popcorn genotypes with high N P use efficiency. The main objective this study was determine for efficiency indexes shoot root traits under low-N -P conditions at early vegetative stage in tropical popcorn. We estimated linear quadratic components from replicated evaluation (V6 stage) six generations derived two crosses involving contrasting inbred lines uptake conditions. In general, non-additive were greater than additive component. Dominance effect important increasing translocation, while both dominance epistatic effects important. For most traits, as well. Excepting efficiency, average degree indicated partial several measured traits. Efficient direct selection can be achieved also provides indirect gains via uptake. Concerning efficient dry weight surface area. Our results evidenced that reciprocal recurrent based on progeny might useful low-nutrient