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Genetic Variability, Correlation among Agronomic Traits, and Genetic Progress in a Sugarcane Diversity Panel

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  • Fernanda Zatti Barreto

    (Centro de Ciências Agrárias, Departamento de Biotecnologia e Produção Vegetal e Animal, Universidade Federal de São Carlos, Araras CEP 13604-900, São Paulo, Brazil)

  • Thiago Willian Almeida Balsalobre

    (Centro de Ciências Agrárias, Departamento de Biotecnologia e Produção Vegetal e Animal, Universidade Federal de São Carlos, Araras CEP 13604-900, São Paulo, Brazil)

  • Roberto Giacomini Chapola

    (Centro de Ciências Agrárias, Departamento de Biotecnologia e Produção Vegetal e Animal, Universidade Federal de São Carlos, Araras CEP 13604-900, São Paulo, Brazil)

  • Antonio Augusto Franco Garcia

    (Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba CEP 13418-260, São Paulo, Brazil)

  • Anete Pereira Souza

    (Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas CEP 13083-862, São Paulo, Brazil
    Centro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas, Campinas CEP 13083-862, São Paulo, Brazil)

  • Hermann Paulo Hoffmann

    (Centro de Ciências Agrárias, Departamento de Biotecnologia e Produção Vegetal e Animal, Universidade Federal de São Carlos, Araras CEP 13604-900, São Paulo, Brazil)

  • Rodrigo Gazaffi

    (Centro de Ciências Agrárias, Departamento de Biotecnologia e Produção Vegetal e Animal, Universidade Federal de São Carlos, Araras CEP 13604-900, São Paulo, Brazil)

  • Monalisa Sampaio Carneiro

    (Centro de Ciências Agrárias, Departamento de Biotecnologia e Produção Vegetal e Animal, Universidade Federal de São Carlos, Araras CEP 13604-900, São Paulo, Brazil)

Abstract

Sugarcane breeding programs require 15 years of experimentation to create more productive cultivars, and estimates of genetic progress can indicate the efficiency of breeding programs. In this study, we used a diversity panel, the Brazilian Panel of Sugarcane Genotypes (BPSG), with the following objectives: (i) to estimate, through a mixed model, the adjusted means and genetic parameters of ten traits evaluated over three harvest years; (ii) to estimate genotypic correlation among those traits; and (iii) to estimate genetic progress over six decades of breeding. The heritabilities ranged from 0.43 to 0.88, and we detected 42 significant correlations, 9 negative and 33 positive. Over six decades, the sucrose-related traits BRIX, POL%C, and POL%J showed an average increase per decade of 0.27 °Brix, 0.26% and 0.31%, respectively. Stalk number, height, and weight of the plot, and cane and sucrose yields revealed average increases per decade of 3.27 stalks, 0.06 m, 9.42 kg, 11.22 t/ha, and 2.08 t/ha, respectively. The genetic progress of the main agronomic traits is discussed through a historical series of sugarcane genotypes present in the BPSG. The findings of this study could contribute to the management of new breeding strategies and allow for future studies of associative mapping.

Suggested Citation

  • Fernanda Zatti Barreto & Thiago Willian Almeida Balsalobre & Roberto Giacomini Chapola & Antonio Augusto Franco Garcia & Anete Pereira Souza & Hermann Paulo Hoffmann & Rodrigo Gazaffi & Monalisa Sampa, 2021. "Genetic Variability, Correlation among Agronomic Traits, and Genetic Progress in a Sugarcane Diversity Panel," Agriculture, MDPI, vol. 11(6), pages 1-15, June.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:6:p:533-:d:571925
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    References listed on IDEAS

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    2. Pardey, Philip G. & Beddow, Jason M. & Hurley, Terrance M., 2014. "World Food Futures to 2050," Briefs 197625, University of Minnesota, International Science and Technology Practice and Policy.
    3. Pardey, Philip G. & Beddow, Jason M. & Hurley, Terrance M. & Beatty, Timothy K.M. & Eidman, Vernon R., 2014. "A Bounds Analysis of World Food Futures: Global Agriculture Through to 2050," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 58(4), October.
    4. Heitor Luís Costa Coutinho & Ana Paula Dias Turetta & Joyce Maria Guimarães Monteiro & Selma Simões de Castro & José Paulo Pietrafesa, 2017. "Participatory Sustainability Assessment for Sugarcane Expansion in Goiás, Brazil," Sustainability, MDPI, vol. 9(9), pages 1-15, September.
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