01776naa a2200301 a 450000100080000000500110000800800410001902400570006010000180011724501080013526000090024352008820025265000100113465000190114465000220116365000160118570000150120170000180121670000190123470000180125370000150127170000170128670000190130370000310132270000230135370000170137677300810139321294832021-01-21       2020    bl uuuu     u00u1 u    #d7 ahttp://dx.doi.org/10.1590/1984-70332020v20n2a302DOI1 aBUSANELLO, C.  aIs the genetic variability of elite rice in southern Brazil really disappearing?h[electronic resource]  c2020  aThere 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.  aArroz  aArroz Irrigado  aGenética Vegetal  aGermoplasma1 aVENSKE, E.1 aSTAFEN, C. F.1 aPEDROLO, A. M.1 aLUZ, V. K. da1 aPEDRON, T.1 aPANIZ, F. P.1 aBATISTA, B. L.1 aMAGALHAES JUNIOR, A. M. de1 aOLIVEIRA, A. C. DE1 aPEGORARO, C.  tCrop Breeding and Applied Biotechnologygv. 20, n. 2, e262620214, July 2020.