1. Is the genetic variability of elite rice in southern Brazil really disappearing?
- Author
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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, and CAMILA PEGORARO, UFPEL.
- Subjects
0106 biological sciences ,Germplasm ,phenotyping ,Biology ,01 natural sciences ,Genetic variation ,genetic variability ,Genetic variability ,Genetic resources ,General Environmental Science ,Oryza sativa L ,Genetic diversity ,Oryza sativa ,Germoplasma ,Arroz Irrigado ,food and beverages ,04 agricultural and veterinary sciences ,Hierarchical clustering ,Agronomy ,genotyping ,Arroz ,Plant morphology ,Genetic marker ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,General Earth and Planetary Sciences ,Genética Vegetal ,Agronomy and Crop Science ,010606 plant biology & botany ,Biotechnology - 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
- Published
- 2020