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Verônica Brito da Silva, Rogério Figueiredo Daher, Bruna Rafaela da Silva Menezes, Geraldo de Amaral Gravina, Maria do Socorro Bezerra De Araújo, Almir Ribeiro de Carvalho Júnior, Derivaldo Pureza da Cruz, Brunno de Oliveira Almeida, Flávio Dessaune Tardin

Abstract: Pennisetum purpureum Schum. has been a key alternative as an energy source in Brazil because of its higher dry matter accumulation and fiber content. This research aimed to select superior individuals of P. purpureum for energy purposes using among-and-within family selection. The study was carried out in Campos dos Goytacazes- RJ (Brazil), using eight full-sib families. Plants were individually assessed during two pasture cuttings, one in 2014, and another in 2015. The dry matter production (DMP) was correlated with the number of tillers, stem diameter, plant height, and neutral detergent fiber content. Plant selection criteria in both cuts were through direct and indirect selections, and Smith and Hazel index. A joint analysis of variance showed significant differences for all five traits assessed in both cuts. The results achieved with Smith and Hazel index were promising for simultaneous selection of the evaluated traits, favoring selection of superior families and individuals them.

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