[1] Univ Agr, Dept Vegetable & Med Plants, Krakow, Poland
[2] Mendel Univ Brno, Fac Hort, Dept Vegetable Growing & Floriculture, Lednice, Czech Republic
[3] Council Agr Res & Econ CREA, Res Ctr Cereal & Ind Crops, Caserta, Italy
[4] Univ Naples Federico II, Dept Agr Sci, Naples, Italy