I. V. Michurin All-Russia Research Institute for Horticulture, Russian Academy of Agricultural Sciences, Tambovskaya obl., Michurinsk-naukograd, Michurin Str. 30, RUSSIA
Olga Rodyukova
I. V. Michurin All-Russia Research Institute for Horticulture, Russian Academy of Agricultural Sciences, Tambovskaya obl., Michurinsk-naukograd, Michurin Str. 30, RUSSIA
Valda Laugale
Pūre Horticultural Research Centre, Abavas 2, Pūre, Tukuma nov., LATVIA