02060naa a2200313 a 450000100080000000500110000800800410001910000220006024501020008226000090018452012020019365000140139565000110140965000260142065000100144665000160145665000080147265000100148065300260149065300150151665300260153165300200155765300140157765300140159165300200160570000160162570000190164177300860166018783802023-04-05       2010    bl uuuu     u00u1 u    #d1 aLEAO, P. C. de S.  aGenetic diversity of a Brazilian wine grape germplasm collection based on morphoagronomic traits.  c2010  aThe objectives of this study were to evaluate the performance of cultivars, to quantify the variability and to estimate the genetic distances of 66 wine grape accessions in the Grape Germplasm Bank of the EMBRAPA Semi-Arid, in Juazeiro, BA, Brazil, through the characterization of discrete and continuous phenotypic variables. Multivariate statistics, such as, principal components, Tocher's optimization procedure, and the graphic of the distance, were efficient in grouping more similar genotypes, according to their phenotypic characteristics. There was no agreement in the formation of groups between continuous and discrete morpho-agronomic traits, when Tocher's optimization procedure was used. Discrete variables allowed the separation of Vitis vinifera and hybrids in different groups. Significant positive correlations were observed between weight, length and width of bunches, and a negative correlation between titratable acidity and TSS/TTA. The major part (84.12%) of the total variation present in the original data was explained by the four principal components. The results revealed little variability between wine grape accessions in the Grape Germplasm Bank of Embrapa Semi-Arid.  agermplasm  aGrapes  amultivariate analysis  aWines  aGermoplasma  aUva  aVinho  aAnálise multivariada  aCultivares  aDiversidade genética  aGrape cultivars  aGrapevine  aVitis spp  aVitivinicultura1 aCRUZ, C. D.1 aMOTOIKE, S. Y.  tRevista Brasileira de Fruticultura, Jaboticabalgv. 32, n. 4, p. 1164-1172, 2010.