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 /spetrovic@pfos.hr, 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