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Is the genetic variability of elite rice in southern Brazil really disappearing?

Is the genetic variability of elite rice in southern Brazil really disappearing?

Authors :
Carlos Busanello
Cássia Fernanda Stafen
A. C. de Oliveira
Camila Pegoraro
Tatiana Pedron
Bruno Lemos Batista
V. K. da Luz
A. M. de Magalhaes Junior
Fernanda Pollo Paniz
Ana Marina Pedrolo
Eduardo Venske
CARLOS BUSANELLO, UFPEL
EDUARDO VENSKE, UFPEL
CÁSSIA FERNANDA STAFEN, UFPEL
ANA MARINA PEDROLO, UFPEL
VIVIANE KOPP DA LUZ, UFPEL
TATIANA PEDRON, UNIVERSIDADE FEDERAL DO ABC
FERNANDA POLLO PANIZ, UNIVERSIDADE FEDERAL DO ABC
BRUNO LEMOS BATISTA, UNIVERSIDADE FEDERAL DO ABC
ARIANO MARTINS DE MAGALHAES JUNIOR, CPACT
ANTONIO COSTA DE OLIVEIRA, UFPEL
CAMILA PEGORARO, UFPEL.
Source :
Crop Breeding and Applied Biotechnology v.20 n.2 2020, Crop Breeding and Applied Biotechnology, Sociedade Brasileira de Melhoramento de Plantas, instacron:CBAB, Crop Breeding and Applied Biotechnology, Volume: 20, Issue: 2, Article number: e262620214, Published: 17 JUL 2020, Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice), Empresa Brasileira de Pesquisa Agropecuária (Embrapa), instacron:EMBRAPA
Publication Year :
2020
Publisher :
Crop Breeding and Applied Biotechnology, 2020.

Abstract

There is a worldwide concern about a possible narrowing of the genetic base of most crops, as e.g. that of rice (Oryza sativa L.), as a result of the modern breeding practices. Thus, the purpose of this study was to investigate this phenomenon in the germplasm of elite paddy rice in southern Brazil, including frequently used accessions in crosses. The panel consisted of 91 accessions. Data of morphological traits, SNP markers and mineral content of husked and polished grain were analyzed by hierarchical clustering and principal component analysis. The SNP markers and hierarchical clustering proved most appropriate to assess the genetic variability. A narrowing of the genetic base of rice was confirmed, although a certain level of genetic variability was still found in the germplasm of elite paddy rice in south Brazilian rice, particularly for grain mineral content. Made available in DSpace on 2021-01-22T09:04:28Z (GMT). No. of bitstreams: 1 Artigo-Busanello-et-al-2020.pdf: 1994579 bytes, checksum: 7df191a977188fc578f6ec9820499c9d (MD5) Previous issue date: 2020

Details

Language :
English
Database :
OpenAIRE
Journal :
Crop Breeding and Applied Biotechnology v.20 n.2 2020, Crop Breeding and Applied Biotechnology, Sociedade Brasileira de Melhoramento de Plantas, instacron:CBAB, Crop Breeding and Applied Biotechnology, Volume: 20, Issue: 2, Article number: e262620214, Published: 17 JUL 2020, Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice), Empresa Brasileira de Pesquisa Agropecuária (Embrapa), instacron:EMBRAPA
Accession number :
edsair.doi.dedup.....c0b38ec18db9467c3ed16366f6c8b401