Genetika 2011 Volume 43, Issue 2, Pages: 307-320
https://doi.org/10.2298/GENSR1102307K
Full text ( 184 KB)
Relationship among eastern cottonwood genotypes according to early rooting traits
Kovačević Branislav (Institut za nizijsko šumarstvo i životnu sredinu, Novi Sad)
Orlović Saša (Institut za nizijsko šumarstvo i životnu sredinu, Novi Sad)
Ivanović Mile (Naučni institut za ratarstvo i povrtarstvo, Novi Sad)
Čobanović Katarina (Poljoprivredni fakultet, Novi Sad)
Nikolić-Đorić Emilija (Poljoprivredni fakultet, Novi Sad)
Katanić Marina (Institut za nizijsko šumarstvo i životnu sredinu, Novi Sad)
Galović Vladislava (Institut za nizijsko šumarstvo i životnu sredinu, Novi Sad)
The relationship between twelve genotypes of eastern cottonwood (Populus
deltoides Bartr.) was analyzed according to sixteen early rooting traits and
cutting survival. Principal component analysis (PCA) and cluster analysis
were used on data that were standardized by common and by one alternative way
of standardization. Alternative way of standardization (standardization with
within-genotype standard deviation instead of standard deviation of
genotypes’ means) was used in order to emphasize the contribution of genotype
to the effect of differences among genotypes on total variation. After bought
ways the first principal component had high correlation with the most of
rooting traits and cutting survival, while the second was mainly related to
the traits of root formation on the basal cut of cutting (wound roots). Three
difficult-to-root genotypes (S6-7, S1-3, 129/81) were distinctly grouped
against other examined genotypes, by bought principal component and cluster
analysis. There was a slight difference in grouping of easy-to-root genotypes
(B-229 and PE19/66) among examined ways of standardization.
Keywords: multivariate analysis, Populus deltoides, root and shoot development