FOLIA HORTICULTURAE, cilt.33, sa.2, ss.1-16, 2021 (SCI-Expanded)
This study
was conducted to test the growth, drought tolerance and biochemical characteristics
of introduced cultivars (‘Jonkheer van Tets’, ‘Hollandische Rote’ and ‘Viksne’)
and some selected Russian cultivars and genotypes (‘Shchedraya’, ‘Natali’, 129-21-61,
111-19-81, 261-65-19 and 271-58-24). The studies were conducted between 2014
and 2018 under temperate continental climate conditions. Climatic conditions
was found to have significant influence on the disease severity of the red
currant genotypes, while the Sphaerotheca
mors-uvae infections increased in optimum seasons and Pseudopeziza ribis damages increased in drought seasons. None of
the selected genotypes was found to be resistant to any of the diseases/pests
but ‘Jonkheer van Tets’, ‘Hollandische Rote’ and 111-19-81 less affected from
these diseases/pests. Berry weight, yield, raceme length and number of berries
in raceme were found to be higher in optimum seasons and different
cultivars/genotypes had superior characteristics for different parameters.
Highest berry weight was observed from 261-65-19 genotype (0.65 g), while the
highest yield was noted from ‘Hollandische Rote’ (15.6 t/ha). It was also found
that the water content of leaves and transpiration has strong positive
relationship with the soil moisture at 0-200 mm, but a week correlation with
soil moisture at 200-400 mm. Results also showed that the transpiration of the
leaves decreases in later development stages (July). Hierarchical clustering
suggested four clusters, where the introduced cultivars produced one cluster,
Russian cultivars took place in other cluster, 261-65-19, 111-19-81 and
129-21-61 genotypes located separately in third cluster and 271-58-24 genotype
(superior in terms of phenolic contents) differed from others.