Predicted genetic gains weighted by selection pressures for grain quality in irrigated rice
Abstract The objective of this work was to analyze components of variances and heritabilities, estimate selection gain, and evaluate the different selection pressures for physical quality attributes of grains of families of segregating generations of irrigated rice (Oryza sativa), through the REML/B...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Embrapa Informação Tecnológica
2021-11-01
|
| Series: | Pesquisa Agropecuária Brasileira |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2021000102910&tlng=en |
| _version_ | 1798021640975548416 |
|---|---|
| author | Paulo Henrique Karling Facchinello Ivan Ricardo Carvalho Eduardo Anibele Streck Gabriel Almeida Aguiar Janaína Goveia Michele Feijó Roberto Ramos Pereira Victoria Freitas de Oliveira Paulo Ricardo Reis Fagundes Luciano Carlos da Maia Francine Lautenchleger Ariano Martins de Magalhães Júnior |
| author_facet | Paulo Henrique Karling Facchinello Ivan Ricardo Carvalho Eduardo Anibele Streck Gabriel Almeida Aguiar Janaína Goveia Michele Feijó Roberto Ramos Pereira Victoria Freitas de Oliveira Paulo Ricardo Reis Fagundes Luciano Carlos da Maia Francine Lautenchleger Ariano Martins de Magalhães Júnior |
| author_sort | Paulo Henrique Karling Facchinello |
| collection | DOAJ |
| description | Abstract The objective of this work was to analyze components of variances and heritabilities, estimate selection gain, and evaluate the different selection pressures for physical quality attributes of grains of families of segregating generations of irrigated rice (Oryza sativa), through the REML/BLUP methodology. The experiment was conducted in the state of Rio Grande do Sul, Brazil, where selections were made in the F3, F4, and F5 segregating generations, in the 2015/2016, 2016/2017, and 2017/2018 crop seasons, in eight segregating populations (families) from different crosses. Intrinsic physical quality attributes, genetic parameters, and response to selection were evaluated using different selection pressures. The obtained estimates showed genetic gains for the characters related to grain quality, mainly for total chalky area, vitreous whiteness, total whiteness, ratio between vitreous whiteness and total whiteness, and percentage of whole grains and broken grains, in selections in early generations. The used families show satisfactory results, being superior to the control cultivars. For most characters, the estimates of broad-sense heritability are considered intermediate, together with the other parameters, showing the possibility of genetic selection for grain quality attributes. The response to selection with a pressure of 10% is very promising for rice grain quality attributes. |
| first_indexed | 2024-04-11T17:16:58Z |
| format | Article |
| id | doaj.art-75fcefc9b52445e1923d3baa9b26b90a |
| institution | Directory Open Access Journal |
| issn | 1678-3921 |
| language | English |
| last_indexed | 2024-04-11T17:16:58Z |
| publishDate | 2021-11-01 |
| publisher | Embrapa Informação Tecnológica |
| record_format | Article |
| series | Pesquisa Agropecuária Brasileira |
| spelling | doaj.art-75fcefc9b52445e1923d3baa9b26b90a2022-12-22T04:12:37ZengEmbrapa Informação TecnológicaPesquisa Agropecuária Brasileira1678-39212021-11-015610.1590/s1678-3921.pab2021.v56.02497Predicted genetic gains weighted by selection pressures for grain quality in irrigated ricePaulo Henrique Karling Facchinellohttps://orcid.org/0000-0001-8227-6358Ivan Ricardo Carvalhohttps://orcid.org/0000-0001-7947-4900Eduardo Anibele Streckhttps://orcid.org/0000-0003-0532-2861Gabriel Almeida Aguiarhttps://orcid.org/0000-0001-7762-4725Janaína Goveiahttps://orcid.org/0000-0002-3826-8382Michele Feijóhttps://orcid.org/0000-0001-8238-2214Roberto Ramos Pereirahttps://orcid.org/0000-0002-1598-1046Victoria Freitas de Oliveirahttps://orcid.org/0000-0002-1206-6934Paulo Ricardo Reis Fagundeshttps://orcid.org/0000-0001-5294-2380Luciano Carlos da Maiahttps://orcid.org/0000-0002-4371-261XFrancine Lautenchlegerhttps://orcid.org/0000-0003-0219-6062Ariano Martins de Magalhães Júniorhttps://orcid.org/0000-0002-0756-4648Abstract The objective of this work was to analyze components of variances and heritabilities, estimate selection gain, and evaluate the different selection pressures for physical quality attributes of grains of families of segregating generations of irrigated rice (Oryza sativa), through the REML/BLUP methodology. The experiment was conducted in the state of Rio Grande do Sul, Brazil, where selections were made in the F3, F4, and F5 segregating generations, in the 2015/2016, 2016/2017, and 2017/2018 crop seasons, in eight segregating populations (families) from different crosses. Intrinsic physical quality attributes, genetic parameters, and response to selection were evaluated using different selection pressures. The obtained estimates showed genetic gains for the characters related to grain quality, mainly for total chalky area, vitreous whiteness, total whiteness, ratio between vitreous whiteness and total whiteness, and percentage of whole grains and broken grains, in selections in early generations. The used families show satisfactory results, being superior to the control cultivars. For most characters, the estimates of broad-sense heritability are considered intermediate, together with the other parameters, showing the possibility of genetic selection for grain quality attributes. The response to selection with a pressure of 10% is very promising for rice grain quality attributes.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2021000102910&tlng=enOryza sativabreedingheritabilitiesREML/BLUP methodology |
| spellingShingle | Paulo Henrique Karling Facchinello Ivan Ricardo Carvalho Eduardo Anibele Streck Gabriel Almeida Aguiar Janaína Goveia Michele Feijó Roberto Ramos Pereira Victoria Freitas de Oliveira Paulo Ricardo Reis Fagundes Luciano Carlos da Maia Francine Lautenchleger Ariano Martins de Magalhães Júnior Predicted genetic gains weighted by selection pressures for grain quality in irrigated rice Pesquisa Agropecuária Brasileira Oryza sativa breeding heritabilities REML/BLUP methodology |
| title | Predicted genetic gains weighted by selection pressures for grain quality in irrigated rice |
| title_full | Predicted genetic gains weighted by selection pressures for grain quality in irrigated rice |
| title_fullStr | Predicted genetic gains weighted by selection pressures for grain quality in irrigated rice |
| title_full_unstemmed | Predicted genetic gains weighted by selection pressures for grain quality in irrigated rice |
| title_short | Predicted genetic gains weighted by selection pressures for grain quality in irrigated rice |
| title_sort | predicted genetic gains weighted by selection pressures for grain quality in irrigated rice |
| topic | Oryza sativa breeding heritabilities REML/BLUP methodology |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2021000102910&tlng=en |
| work_keys_str_mv | AT paulohenriquekarlingfacchinello predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT ivanricardocarvalho predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT eduardoanibelestreck predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT gabrielalmeidaaguiar predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT janainagoveia predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT michelefeijo predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT robertoramospereira predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT victoriafreitasdeoliveira predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT pauloricardoreisfagundes predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT lucianocarlosdamaia predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT francinelautenchleger predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice AT arianomartinsdemagalhaesjunior predictedgeneticgainsweightedbyselectionpressuresforgrainqualityinirrigatedrice |