Genetic base of Brazilian irrigated rice cultivars
The aim of this study was to estimate the genetic base of Brazilian irrigated rice cultivars released in the period from 1965 to 2012. The genealogies of the cultivars were obtained based on information from marketing folders, websites, crossings records, and scientific articles. The following fa...
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Brazilian Society of Plant Breeding
2015-08-01
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doaj-27930413f9ed432fb7f694fff7a7883d2020-11-25T02:02:55ZengBrazilian Society of Plant BreedingCrop Breeding and Applied Biotechnology1518-78531984-70332015-08-0115314615310.1590/1984-70332015v15n3a26Genetic base of Brazilian irrigated rice cultivarsHudson de Oliveira Rabelo0João Filipi Rodrigues Guimarães1 José Baldin Pinheiro2 Edson Ferreira da Silva3 Universidade Federal Rural de Pernambuco (UFRPE), Departamento de Agronomia, Rua Dom Manoel de Medeiros, s/n, 52.171-900, Recife, PE, Brazil.Universidade Federal de Viçosa (UFV), Departamento de Biologia Geral, Av. P.H. Rolfs, s/n, 36.571-900, Viçosa, MG, BrazilEscola Superior de Agricultura Luiz de Queiroz (ESALQ), Departamento de Genética, Av. Pádua Dias, 11, 13.418-900, Piracicaba, SP, Brazil UFRPE, Departamento de Biologia The aim of this study was to estimate the genetic base of Brazilian irrigated rice cultivars released in the period from 1965 to 2012. The genealogies of the cultivars were obtained based on information from marketing folders, websites, crossings records, and scientific articles. The following factors were calculated: relative genetic contribution (RGC), accumulated genetic contribution (AGC), frequency (in percentage) of each ancestor in the genealogy (FAG), number of ancestors that constitute each cultivar (NAC),number of ancestors responsible for 60%, 70%, 80% and 90% of the genetic base (NAGB), and average number of ancestor per cultivar (ANAC). The cultivars were also grouped based on the period of release (1965-1980, 1981-1990, 1991-2000 and 2001-2012). For each grouping, the previously described factors were also estimated. A total of 110 cultivars were studied and it was concluded that the genetic base of Brazilian irrigated rice cultivars is narrow.http://www.sbmp.org.br/cbab/siscbab/uploads/c8eb9792-b0a1-dcda.pdfOryza sativarelative genetic contributionaccumulated genetic contributiongenealogiesgenetic vulnerability |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hudson de Oliveira Rabelo João Filipi Rodrigues Guimarães José Baldin Pinheiro Edson Ferreira da Silva |
spellingShingle |
Hudson de Oliveira Rabelo João Filipi Rodrigues Guimarães José Baldin Pinheiro Edson Ferreira da Silva Genetic base of Brazilian irrigated rice cultivars Crop Breeding and Applied Biotechnology Oryza sativa relative genetic contribution accumulated genetic contribution genealogies genetic vulnerability |
author_facet |
Hudson de Oliveira Rabelo João Filipi Rodrigues Guimarães José Baldin Pinheiro Edson Ferreira da Silva |
author_sort |
Hudson de Oliveira Rabelo |
title |
Genetic base of Brazilian irrigated rice cultivars |
title_short |
Genetic base of Brazilian irrigated rice cultivars |
title_full |
Genetic base of Brazilian irrigated rice cultivars |
title_fullStr |
Genetic base of Brazilian irrigated rice cultivars |
title_full_unstemmed |
Genetic base of Brazilian irrigated rice cultivars |
title_sort |
genetic base of brazilian irrigated rice cultivars |
publisher |
Brazilian Society of Plant Breeding |
series |
Crop Breeding and Applied Biotechnology |
issn |
1518-7853 1984-7033 |
publishDate |
2015-08-01 |
description |
The aim of this study was to estimate the genetic base of Brazilian irrigated rice cultivars released in the period from 1965
to 2012. The genealogies of the cultivars were obtained based on information from marketing folders, websites, crossings records,
and scientific articles. The following factors were calculated: relative genetic contribution (RGC), accumulated genetic contribution (AGC), frequency (in percentage) of each ancestor in the genealogy (FAG), number of ancestors that constitute each cultivar (NAC),number of ancestors responsible for 60%, 70%, 80% and 90% of the genetic base (NAGB), and average number of ancestor per cultivar (ANAC). The cultivars were also grouped based on the period of release (1965-1980, 1981-1990, 1991-2000 and 2001-2012).
For each grouping, the previously described factors were also estimated. A total of 110 cultivars were studied and it was concluded that the genetic base of Brazilian irrigated rice cultivars is narrow. |
topic |
Oryza sativa relative genetic contribution accumulated genetic contribution genealogies genetic vulnerability |
url |
http://www.sbmp.org.br/cbab/siscbab/uploads/c8eb9792-b0a1-dcda.pdf |
work_keys_str_mv |
AT hudsondeoliveirarabelo geneticbaseofbrazilianirrigatedricecultivars AT joaofilipirodriguesguimaraes geneticbaseofbrazilianirrigatedricecultivars AT josebaldinpinheiro geneticbaseofbrazilianirrigatedricecultivars AT edsonferreiradasilva geneticbaseofbrazilianirrigatedricecultivars |
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