Pūre Horticultural Research Centre, Abavas iela 2, Pūre, Tukuma nov., LV-3124, LATVIA
Heljo Jänes
Polli Horticultural Research Centre of Estonian University of Life Sciences, Karksi-Nuia 69108, Viljandimaa, ESTONIA
Alena V. Poukh
Brest Regional Agricultural Experimental Station of the National Academy of Science of Belarus, Urbanovich Str. 5, Pruzani, Brest Distr., 225133, BELARUS
Inga Alsiņa
Latvia University of Agriculture, Lielā iela 2, Jelgava, LV-3001, LATVIA