Avaliação para características agronômicas de linhas mutantes M3 de Urochloa brizantha induzida por EMS (etilmetanosulfonato)

Abstract

The project is part of the Urochloa brizantha cv Marandu breeding program of Universidade do Oeste Paulista - UNOESTE and involves obtaining progenies with EMS (ethyl methanesulfonate) induced mutation, evaluating the agronomic performance, through the production and nutritive value and morphogenic analyzes. The seeds used for M3 generation formation were obtained in previous works. Thus, the proposal aims to select promising candidates for new Urochloa cultivars. The adoption of this procedure will enable the development of new cultivars in the coming years, with the aim of increasing productivity per animal and per area, as well as contributing to the diversification of pastures in cerrado areas of Brazil. Twenty-one mutants were evaluated in a randomized block design with three replicates. For the evaluation of yield and nutritive value, significant differences were observed for leaf area, average internode length, dry leaf / stem mass, number of seeds, crude protein, neutral detergent fiber, acid detergent fiber and lignin.