Crescimento de genótipos de milho em diferentes intervalos de avaliação

• Autor(a) principal: Farias, Thassila Silva De
• Data de Publicação: 2023
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional do Instituto Federal de Alagoas (RI IFAL)
• Texto Completo: https://repositorio.ifal.edu.br/handle/123456789/1020
• topic: Semiárido; Híbridos; Períodos; Zea mays L.; Semi-arid; Hybrids; CIENCIAS AGRARIAS

Maize is a crop of great socio-economic importance for animal and human nutrition. Evaluating the growth of cultivars is crucial to determining the performance and adaptability of these genetic materials in different growing environments (soils, temperature regimes, water availability and management practices). In Sergipe, maize has been widely exploited, however, some regions of the state face obstacles in achieving higher yields, and choosing the right cultivar minimizes production losses. The aim of this study was to evaluate the growth of maize genotypes in the environmental conditions of the Alto Sertão region of Sergipe, Brazil. The experiment took place on plot 2N-01, Sector 3, of the California Irrigated Perimeter, located in the municipality of Canindé de São Francisco-SE, between the months of April and August 2022, under a randomized block design, with four replications and treatments arranged in plots subdivided by time, consisting of twelve corn hybrids in the plots: BM930 PRO3, BM855 PRO2, BM990 VIP3, BM815 PRO2, BM270 PRO2, BM709 PRO2, BM880 PRO3, BM3066 PRO2, K7500 VIP3, K9606 VIP3, K9555 VIP3, K7510 VIP3; and one variety: BRS Gorutuba. The subplots consisted of four intervals for assessing plant growth: 22 days after planting - DAP, 36 DAP, 50 DAP and 67 DAP. The characteristics assessed were: plant height, stem diameter, number of leaves per plant, leaf area and leaf area index. The factors genotypes and evaluation intervals had an isolated influence on thatch diameter. For the number of leaves per plant, there was an isolated effect of the evaluation intervals. There was an interaction between the factors for the characteristics of plant height, leaf area and leaf area index. Plant height, the number of leaves per plant, leaf area and leaf area index showed a tendency to increase over the growth assessment intervals. However, from 50 days after planting, the genotypes showed a decrease in stalk diameter. The hybrids K7510 VIP3, K9555 VIP and BM855 PRO2 showed the best growth results.