Canonical discriminant variate
1 2 3 4 5
PH 0,776* 0,544 .086 .090 -.290
EL 0,549* 0,438 -.362 .349 .503
NS -0,0730,7 0,625* -.363 .592 -.070
NGE Not included
HW -0,093 0,564* .572* .001 .488
TKY 0,197 -0,244 .613* .622* -.143
Y -0,62 0,078 -.014 .253 .374*
Eigenvalue 1.154 .364 .189 .084 .018
Variance % 63.8 20.1 10.5 4.7 1.0
Canonical correlation .732 .517 .399 .279 .132
P level 0,01 0,01 0,01 0,01 0,142
S. Petrovic1, T. Cupic2, V. Guberac1, S. Maric1 1Faculty of Agriculture, University J.J. Strossmayer,Osijek, Croatia /[email protected], 2Agricultural institute Osijek, Croatia
A total of 40 winter bread wheat varieties, originated from Croatia, Austria,
France, Italy and Russia, were used in this study. The genotypes were sown in the
Eastern part of Croatia using randomized block design with three replicates.
During growth season, following traits were measured: plant height (PH), spike
length (SL), 1000 kernel weight (TKW), hectoliter weight (HW), number of
spikelets/spike (NS), number of grains/spike (NGS), and grain yield (Y).
Discriminant analysis was carried out to perceive the differences of six Rht8/Ppd-
D1 groups on the mean value of individual variables and to determine which of
these variables was the most discriminant between groups (Table 1).
Canonical and correlation analysis of the first two discriminant axis explained 83.9% of total
variability between groups. The First canonical axis showed the highest difference between
groups 165/b and 192/a, while the second axis mostly discriminate groups 196/b and 174/a.
Based on discriminant analysis results distances between centroids of every groups were
calculated using the Mahalonobis coefficient (Picture 1). Coefficients between groups varied from
2.1* to 26.8** and it was possible to discriminate groups according to some agronomic traits
Canonical discriminant variate
1 2 3 4 5
PH 0.776* 0.544 0.086 0.090 -0.290
SL 0.549* 0.438 -0.362 0.349 0.503
NS -0.0730 0.625* -0.363 0.592 -0.070
NGS Not included
HW -0.093 0.564* 0.572* 0.001 0.488
TKW 0.197 -0.244 0.613* 0.622* -0.143
Y -0.62 0.078 -0.014 0.253 0.374*
Eigenvalue 1.154 0.364 0.189 0.084 0.018
Variance % 63.8 20.1 10.5 4.7 1.0
Canonical correlation 0.732 0.517 0.399 0.279 0.132
P level 0.01 0.01 0.01 0.01 0.142
Table 1. The canonical
loadings of independent
variables on first two
canonical discriminant
variates of the Rht8/Ppd1
groups
Picture 1. Centroid
values for the first two
canonical discriminant
functions