%0 Journal Article %T Effects of quantitative and qualitative principal component score strategies on the structure of coffee, rubber tree, rice and sorghum core collections %A Hamon Serge %A Dussert St¨¦phane %A Deu Monique %A Hamon Perla %J Genetics Selection Evolution %D 1998 %I BioMed Central %R 10.1186/1297-9686-30-s1-s237 %U http://www.gsejournal.org/content/30/S1/S237