Estimates of genetic selection gain in irrigated F3 rice families

Autores

  • Gabriela de Magalhães da Fonseca Instituto Rio Grandense do Arroz.
  • Maicon Nardino ​Maicon Nardino Professor Adjunto A-I M​elhoramento de Trigo ​Departamento de Fitotecnia/DFT Universidade Federal de Viçosa​ - UFV​ https://orcid.org/0000-0002-4177-4921 Viçosa-MG Brasil Fone: (31) 3612-4444
  • Marina de Magalhães da Fonseca
  • Viviane Koop da Luz Universidade Federal de Pelotas
  • Ariano Martins de Magalhães Júnior Embrapa Clima Temperado -Pelotas
  • Antonio Costa de Oliveira Universidade Federal de Pelotas
  • Luciano Carlos da Maia Universidade Federal de Pelotas

DOI:

https://doi.org/10.15361/1984-5529.2020v48n2p139-146

Resumo

Rice production estimate in Brazil is 10.7 million tons, of which approximately 80% comes from the flood irrigation system in the southern region. Rice breeding programs have an important role in the development of cultivars with high production potential and industrial quality. This study estimates variance components and genetic parameters in F3 families, and predicts the genetic gain in rice grain quality for the F4 generation. We used fifty-six (56) F3 families obtained from the advance of generations of the hybrid BRSCIRAD 302. This hybrid was selected for its traits of agronomic and scientific interest, such as grain yield and industrial yield. The hybrid was developed by Embrapa in partnership with CIRAD (Center for International Cooperation in Agronomic Research for Development) for Rio Grande do Sul State through the crossing of CIRAD 464 (M) × SBT 106 (F). The quality of the selected families was analyzed for amylose content, white belly, and gelatinization temperature. The F3 families showed low gelatinization temperature. Selection of BRSCIRAD 302 hybrid families with smaller white belly spots and higher amylose content may be more successful if carried out between F3 families. Twenty-two (22) families showed amylose content higher than that of the highest parent (29.44%). The predicted genetic gain in amylose content was 4.85% for families derived from the hybrid BRSCIRAD 302.

Biografia do Autor

Gabriela de Magalhães da Fonseca, Instituto Rio Grandense do Arroz.

Melhorista no Instituto Rio Grandense do Arroz. 

Maicon Nardino, ​Maicon Nardino Professor Adjunto A-I M​elhoramento de Trigo ​Departamento de Fitotecnia/DFT Universidade Federal de Viçosa​ - UFV​ https://orcid.org/0000-0002-4177-4921 Viçosa-MG Brasil Fone: (31) 3612-4444

http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4436948J3

Viviane Koop da Luz, Universidade Federal de Pelotas

Pós doutoranda na área de Melhoramento de Plantas.

Ariano Martins de Magalhães Júnior, Embrapa Clima Temperado -Pelotas

Pesquisador/Melhorista de arroz na Embrapa Clima temperado - Terras Baixas

Antonio Costa de Oliveira, Universidade Federal de Pelotas

Professor na UNiversidade Federal de Pelotas, na área de Genômica e Melhoramento de Plantas

Luciano Carlos da Maia, Universidade Federal de Pelotas

Professor na UNiversidade Federal de Pelotas, na área de Genômica e Melhoramento de Plantas

Arquivos adicionais

Publicado

29/06/2020

Edição

Seção

Melhoramento Genético Vegetal - Plant Breeding