The observed bands in the gels were evaluated based on the
presence (coded 1) or absence (coded 0) of polymorphic fragments
for the ERIC products. Cluster analysis was performed with NTSYSpc
(Version 2.10), a numerical taxonomy and multivariate analysis
software package (Rohlf, 2000) based on Dice's similarity coeffi-
cient (SD) with a 1% position tolerance and the unweighted pair
group method using arithmetic averages (UPGMA).