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    BRSMG Caçula: very early upland rice cultivar for Minas Gerais
    (Crop Breeding and Applied Biotechnology, 2013) Soares, Antônio Alves; Reis, Moizés de Sousa; Cornélio, Vanda Maria de Oliveira; Leite, Natália Alves; Soares, Plínio César; Santos, Vanderley Borges; Condé, Aurinelza Batista Teixeira; Reis, Wagner Pereira
    The basic objective of the upland rice breeding program developed in the state of Minas Gerais is to make new commercialcultivars available. A new cultivar named BRSMG Caçula is being released, with the main traits: earliness, lodging tolerance, grain quality, disease tolerance, and high grain yield.
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    Artificial neural networks for adaptability and stability evaluation in alfalfa genotypes
    (Crop Breeding and Applied Biotechnology, 2013) Nascimento, Moysés; Peternelli, Luiz Alexandre; Cruz, Cosme Damião; Nascimento, Ana Carolina Campana; Ferreira, Reinaldo de Paula; Bhering, Leonardo Lopes; Salgado, Caio Césio
    The purpose of this work was to evaluate a methodology of adaptability and phenotypic stability of alfalfa genotypes based on the training of an artificial neural network considering the methodology of Eberhart and Russell. Data from an experiment on dry matter production of 92 alfalfa genotypes (Medicago sativa L.) were used. The experimental design constituted of randomized blocks, with two repetitions. The genotypes were submitted to 20 cuttings, in the growing season of November 2004 to June 2006. Each cutting was considered an environment. The artificial neural network was able to satisfactorily classify the genotypes. In addition, the analysis presented high agreement rates, compared with the results obtained by the methodology of Eberhart and Russell.
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    Genetic improvement of sugar cane for bioenergy: the brazilian experience in network research with RIDESA
    (Crop Breeding and Applied Biotechnology, 2012) Barbosa, Márcio Henrique Pereira; Resende, Marcos Deon Vilela; Dias, Luiz Antônio dos Santos; Barbosa, Geraldo Veríssimo de Souza; Oliveira, Ricardo Augusto de; Peternelli, Luiz Alexandre; Daros, Edelclaiton
    In this paper, it is presented RIDESA's model for sugar cane breeding to ethanol, and its scientific, technological and human resources training contributions. RIDESA is an inter-university network for the development of sugar cane industry in Brazil, and was formed by a technical cooperation agreement between ten public universities. The model of network management is presented in this study, which involves, among other things, the public-private partnership (Universities-Mills) for the development of cultivars. RIDESA has produced 59 cultivars since 1990 and is now responsible for 59% of the total area cultivated with this plant in Brazil. In the last five years, 286 agronomists were trained in breeding programs at universities that comprise RIDESA. In this same period, the network formed 35 professors, 24 doctors and 7 post-docs in researches with this crop. It is also presented a conceptual approach on methods of sugar cane breeding involving families and genome-wide selection.
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    Contribution of components of production on snap bean yield
    (Crop Breeding and Applied Biotechnology, 2012) Araújo, Lanusse Cordeiro de; Gravina, Geraldo de Amaral; Marinho, Caillet Dornelles; Almeida, Sebastião Ney Costa de; Daher, Rogério Figueiredo; Amaral Júnior, Antônio Teixeira do
    Aiming to estimate the path coefficients among morphological traits and effects of production components on the yield of grains and pods, thirty snap bean genotypes (27 lines and three commercial controls) were evaluated in Bom Jesus of Itabapoana-RJ. The experiments were carried out in a randomized block design, with four replications, from May to June, in 2009 and 2010. Eight traits were evaluated and the number of pods per plant, associated with high genetic correlation, is the character with the most significant direct effect on productivity. There is a high rate of genotypic association between the yields of pods and grains, as well as direct effects of high magnitude and positive signal between them, indicating that the selection for increased pod yield allows increased grain yield.
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    Sugarcane: cultivar RB937570
    (Crop Breeding and Applied Biotechnology, 2012) Silveira, Luís Cláudio Inácio da; Barbosa, Márcio Henrique Pereira; Kist, Volmir; Daros, Edelclaiton; Peternelli, Luiz Alexandre; Souza, Vicente Freitas Martins de; Ribeiro, Sebastião Nilson Niquini; Vilarinho, Francisco Mauro
    The sugarcane cultivar RB937570 is early to medium maturing. It should be grown preferably on medium texture soils with medium to high fertility. In central-southeastern Brazil, RB937570 should be harvested between May and August. It is tolerant to the major economically relevant crop diseases, has a good shoot development after mechanical harvesting and high sucrose yields.