Herbage accumulation of bahiagrass hybrids in two different environments in southern Brazil

• Autor(a) principal: Barbosa, Marlon Risso
• Data de Publicação: 2019
• Outros Autores: Da Motta, Éder Alexandre Minski, Machado, Juliana Medianeira, Kryck, Karine Cristina, Conterato, Ionara Fátima, Weiler, Roberto Luis, Dall’Agnol, Miguel, Simioni, Carine
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Gaúcha (Online)
• Texto Completo: http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/31
• topic: Agronomic assessment; Genetic improvement; Instraspecific hybrids; Paspalum notatum; Avaliações agronômicas; Hibridações intraespecíficas; Melhoramento genético; Paspalum notatum

The native grasslands of southern Brazil have sustained livestock farming for many years; however, decline in pasture areas has led to the loss of genetic diversity of forage species. The development of forage grass cultivars adapted to different environments, will contribute to forming new cultivated pastures or recovering degraded areas. The aim of this study was to assess the herbage accumulation of selected intraspecific hybrid progenies of bahiagrass (P. notatum Flügge) in two different environments (Depressão Central and Campanha region) to estimate their agronomic value. The results indicated variability for the main forage traits studied (leaf dry mass, stem dry mass, inflorescence dry mass, total dry mass, leaf: stem ratio, plant height and population density of tillers). All the hybrids producing more forage mass than the ‘Pensacola’ cultivar in the municipality of Eldorado do Sul and the majority also superior in the municipality of São Gabriel. The production of leaves in the forage was correlated with total dry mass (84%), suggesting that genotype selection for forage mass also selected for production of leaves. The selected hybrids should be indicated for new steps of assessment within the P. notatum breeding program.