Genetic parameters and selection of Pennisetum glaucum (L.) R. Br. genotypes based on agronomic performance in Cáceres, MT.
Genetic correlations; Plant breeding; Quantitative genetics
Pennisetum glaucum (L.) R. Br.], is a multipurpose species, essential for sustainable production systems, standing out for its hardiness and forage potential in the Cerrado biome. The success of breeding programs is based on the existence of genetic variability and the accurate estimation of biometric parameters. The objective of this study was to estimate genetic parameters and select pearl millet genotypes based on agronomic traits to identify promising materials for the environmental conditions of Cáceres-MT. The experiment was conducted in a randomized complete block design, with nine genotypes and four replicates. The following traits were evaluated: plant height (ALTP), stem diameter (DC), panicle insertion height (ALTIP), and panicle length (COMP). Data were subjected to analysis of variance (ANOVA), Scott-Knott cluster test, and estimation of genetic parameters using the GENES software. ANOVA revealed significant differences () among genotypes only for panicle length, indicating the existence of exploitable genetic variability for this trait. For the vegetative variables (ALTP, DC, and ALTIP), there were no significant differences, demonstrating high phenotypic uniformity among the materials evaluated in the test environment. Genotypes BRS 1502, 2022MT001-060, and 2022MT001-016 showed the highest average panicle lengths, being statistically superior. It is concluded that the evaluated germplasm presents phenotypic uniformity for vegetative traits and exploitable genetic variability for panicle length, making this trait suitable for short-term selection gains.