Abstract
Aim. To study wide range of onion collection samples of different ecological and geographical origin by set of agronomic traits and properties for subsequent use in crossbreeding and selection of valuable genotypes among breeding material.Materials and methods. The studies were conducted during 2011-2015 in vegetable crop rotation of Nosivka Plant Breeding Experimental Station of MIW located in the northern part of the Forest-Steppe ofUkraine. Annually 60-80 onion varieties and hybrids of different ecological and geographical origin (Ukraine,Poland,Russia, theNetherlands,France,Italy,USA,Germany, etc.) were studied in collection nursery. The methods of the State strain testing, methods of studying selection samples by main agronomic traits and evaluating disease resistance were used. Statistical processing data obtained was performed by the method of B.A. Dospekhov.Results. 14 samples (Gladstone F1, Valensiia, Liubchyk, Tamara F1, Tkachenkivska, Stryhunivska, Variah, Supra, Universo F1, Veselka, Pandero F1, Kometa F1, Density F1, Mavka) were identified among onion collection varieties and hybrids by a number of agronomic traits (yielding capacity, early maturity, resistance to the major diseases, keeping quality, marketability of onions) and recommended to be used in breeding programs.Conclusions. The above-mentioned high-yielding, early maturing, little susceptible to downy mildew and sufficiently resistant to rots samples with high marketability and good storage can be involved in hybridization to develop promising breeding material with the specified parameters.
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