1 Аграрен университет, Катедра по генетика и селекция, 4000 Пловдив, бул. „Менделеев” 12
2 Институт по земеделие и семезнание „Образцов чифлик”, 7007 Русе, ул. „Проф.Иван Иванов”1
Резюме
The objective of the study was the power of influence of three different rootstocks
(Berlandieri x Riparia SO4 - control variant, Rupestris du Lot and Chasselas
x Brelandiers 41B) to be determined on the most important technological
characteristics of Russalka 3 seedless cultivar, via parallel use of two evaluation
criteria. The observation was carried out over a period of 7 consecutive years, as 12
traits were followed. A high degree of variability of some of the traits was reported.
In grafting of cv Russalka 3 on SO4 and Chasselas 41B rootstocks, in 58% of all traits observed, the values of the variation coefficients were above 20%, whereas
for the Rupestris du Lot rootstocks - such values were for 66% of the traits. Data
was statistically processed with two evaluation criteria (t - Student and F - Fisher)
in order larger number of significant differences to be found in determining the
influence of the rootstocks. Using the Fisher criterion, the number of significant
differences was nearly four times larger, compared to the use of the second criterion
(Student). In high variability data, it is recommended to evaluate the influence of
a certain factor using Fisher’s (F) statistical criteria. The analysis showed that the
variant with vines grafted on Rupestris du Lot rootstocks significantly exceeded
the control (with grafted vines on SO4 rootstocks) by traits: content of sugars,
berry resistence to pressure, and resistance to pick off, while for the variant with
use in grafting Chasselas 41B rootstock – the traits was % of berries in the cluster.
Comparing the values of the technological traits in vines cv Russalka 3, grafted on
both rootstocks (Rupestris du Lot and Chasselas 41B), significant differences in
probability α <0.1% were reported for six of all twelve traits.
Key words: Biometric analysis, Rupestris du Lot and Chasselas 41B, Russalka 3
seedless cultivar, SO4 rootstocks, Technological traits