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SODININKYSTË IR DARÞININKYSTË. SCIENTIFIC ARTICLES. 2006. 25(4).
INVESTIGATION OF BIOLOGICAL TRAITS OF APPLE
CULTIVARS
A. Sasnauskas, D. Gelvonauskienë, B. Gelvonauskis, J. B. Ðikðnianienë,
G. Ðabajevienë, P. Duchovskis
Summary
In 1999–2006 at the Lithuanian Institute of Horticulture phenology, blossoming
abundance and shoot injury, growth, resistance to scab (Venturia inaequalis (Cke)
Wint.), apple blotch (Phyllosticta mali Pr. at Del.), European cancer (Nectria galligena
Bres.) and photosynthetic pigments of fruits were studied in 10 new apple
(Malus domestica Borkh.) cultivars. Trees were grafted on M.26 rootstock and
grown in an orchard at a spacing of 4 x 2.5 m.
Investigations showed that early blossomed cvs. ‘Bolotovskoje’, late – ‘Antej’,
‘Katja’, ‘Kovalenkovskoje’, ‘Kurnakovskoje’ and ‘Sveþestj’ apple tree. The results
of the flower resistance to frost showed that cv. ‘Katja’ are the highly resistance.
Winter hardy are cvs. ‘Pamiatj Siubarovoj’ apple shoots. The weakest growth was
in trees of cvs. ‘Sveþestj’ and ‘Delikates’. Immune to scab are cvs. ‘Bolotovskoje’,
‘Jubiliar’ and ‘Sveþestj’. Resistant to apple blotch are cvs. ‘Katja’, ‘Kovalenkovskoje’,
‘Kurnakovskoje’ and ‘Verbnoje’, to European cancer – ‘Sveþestj’. More photosynthetic
pigments were accumulated in apple trees of cvs. ‘Sveþestj’ and ‘Antej’
leaves, less – in ‘Kurnakovskoje’ leaves.
Key words: apple, cultivars, growth, phenology, photosynthetic pigments, resistance
to diseases.
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