Genetic distances of potato genotypes based upon using morphological, genealogical, and molecular data

Giovani Olegário da Silva, Arione da Silva Pereira, Velci Queiroz de Souza, Caroline Marques Castro, Fernando Irajá Félix de Carvalho, Eduardo Alano Vieira

Abstract


The objective of this work was to compare estimates of genetic distances of potato genotypes using genealogical, morphological and molecular data, and jointed data (morphological and molecular). The work was carried on at Embrapa Clima Temperado and UFPel/FAEM/Laboratório de Genômica e Fitomelhoramento. The evaluaton was with a set of 13 potato cultivars and elite clones of the Embrapa Clima Temperado Active Germoplasm Bank of Potatoes. The field experiments were grown in springs of 1999, 2000, 2001, 2002 and 2003, in single 20 plant plots, spaced at 0.30m between plants and 0.80m between rows. The genotypes were evaluated morphologically for 33 plant and tuber traits and for AFLP markers. The analysis of variance, considering year as replication, revealed no significant differences only for leaflet width, flowers frequency, stalk pigmentation e apex aspect. Correlations between dissimilarity matrices were significant only for jointed (morphologic and molecular) and molecular matrix. Therefore, all estimates of genetic distance between potato genitors should be considered in planning crosses.


Keywords


Solanum tuberosum L; genealogy; AFLP; Dissimilarity analysis



DOI: http://dx.doi.org/10.5433/1679-0359.2009v30n4Sup1p983

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional