Desempenho De Genótipos De Milho Em Relação Ao Florescimento E Produtividade De Grãos No Semiárido Sergipano
Year: 2026
Type: article
Abstract: Maize (Zea mays L.) is commonly used for human and animal nutrition, in addition to having high economic importance. In the semiarid region of Sergipe, irregular rainfall and periods of water restriction may limit crop development and yield, making the selection of genotypes adapted to the region’s conditions relevant. Therefore, the objective was to evaluate the performance of maize genotypes regarding female flowering (FF), male flowering (MF), and grain yield (GY). The experiment was conducted in 2021 at the Experimental Farm of the Federal University of Sergipe, Campus do Sertão, in Nossa Senhora da Glória, Sergipe, Brazil. The experimental design was a randomized complete block design (RCBD) in a strip-plot arrangement, with row spacings arranged in strips. Four genotypes were evaluated in four replications. The plots consisted of two rows, each eight meters long. The evaluated variables were MF, FF, and GY. Data were subjected to analysis of variance (ANOVA), and means were compared using Tukey’s test at a 5% significance level (p \leq 0.05). The genotypes differed significantly for male flowering (MF), female flowering (FF), and grain yield (p \leq 0.001). The AG8780 genotype showed the lowest MF and FF values, indicating greater earliness, a desirable trait. In addition, it showed the highest grain yield, indicating superior productive performance under the evaluated conditions. The same genotype presented the highest grain yield among the evaluated materials. The coefficients of variation (CV) were low, with maximum values of 1.65% for female and male flowering and 13% for grain yield, indicating high experimental precision. The performance of AG8780 in terms of earliness and productivity indicates its potential adaptation to the conditions of the semiarid region of Sergipe, since a shorter duration until flowering may potentially reduce plant exposure to rainfall shortages during reproductive stages. It is concluded that AG8780 has traits of interest for the selection of maize genotypes adapted to semiarid conditions, standing out for its earliness and higher grain yield. Earliness is an important trait in this environment due to inconsistent rainfall and the occurrence of periods of water restriction, which may coincide with critical stages such as the determination of grain number.
Institution: Universidade Federal de Sergipe
Language: Portuguese
Topic: Genetics and Plant Breeding
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W7223193487