Title:	Is the genetic variability of elite rice in southern Brazil really disappearing?
Authors:	BUSANELLO, C. VENSKE, E. STAFEN, C. F. PEDROLO, A. M. LUZ, V. K. da PEDRON, T. PANIZ, F. P. BATISTA, B. L. MAGALHAES JUNIOR, A. M. de OLIVEIRA, A. C. DE PEGORARO, C.
Affiliation:	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.
Date Issued:	2020
Citation:	Crop Breeding and Applied Biotechnology, v. 20, n. 2, e262620214, July 2020.
Description:	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.
Thesagro:	Arroz Arroz Irrigado Genética Vegetal Germoplasma
DOI:	http://dx.doi.org/10.1590/1984-70332020v20n2a30
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPACT)