As the result of the dissertation work, 45 samples of naked grain oats of different ecological and geographical origin were investigated for the first time in the conditions of the eastern part of the Left Bank Forest Steppe of Ukraine, the theoretical generalization and a new solution of the important scientific task concerning a complex analysis of the peculiarities of forming their productivity and crop capacity as well as determining their selection value by a set of productivity traits while conducting samples crossing with the use of classical methods (determination of phenotypic dominance, true and hypothetical heterosis in F1, (heritability coefficient, frequency and degree of transgression – in F2) and methods of multidimensional statistics (hierarchical cluster analysis and the K-averages method) and the creation of a new source material were given. Perspective lines
based on a complex of productivity and crop capacity were defined. As a result of studying collection samples of naked grain oats by the duration of the vegatation period, it was determined that all samples belonged to the medium maturing group. There were no significant differences among the samples as to the duration of the vegatation period.
The influence of the year's conditions on the manifestation of some signs in collection samples was proven. The difference between the collection samples based
on the features of panicle productivity and the level of their manifestation has been defined By the height of naked grain oats plants samples were divided into three
groups: very low (60–74 cm) – 2 samples (Korolyok (BLR), Valdyn 765 (RUS)), low (75–85 cm) – 28 samples and medium-low (86–96 cm) – 15 samples.
On the basis of structural analysis and complex evaluation of the panicles productivity, the sources of valuable traits for the selection of naked grain oats were
singled out. Genotypes with a high manifestation of productivity and crop capacity traits were defined: – by panicle length – ТР 12-115 (UKR), Jakub (CR), Solomon (DEU),
Litovskij Nadij(LVA), Bai Jan 2 (CHN), AC Percy (CAN), Sibirsky Holozerny, Inermys, Pushkinsky, Vyatsky, Bage, Aldan, Murom, Pomor, Havrosh, Ofenya, Tarsky Holozerny, Golets (RUS); – by a number of spikelets formed in a panicle - Abel (CR), Bai Jan 2 (CHN), Tyumensky holozerny, Bekas, Baget, Vyrovets, Aldan, Tarsky holozerny, Pomor,
Golets (RUS); – by a number of grains in a panicle – OM 11-3007/3, B/n REN nuda 039605 (UKR), Abel (CR), Samuel, Solomon (DEU), Vandrounyk, Maraphon, Holz (BLR),
Sybirsky holozerny, Pushkinsky, Vyatsky, Agramak, Bekas, Aldan, Murom, Ofenya (RUS); – by the grain mass in a panicle – Abel (CR), AC Percy, Boudrais (CAN), Pushkinsky, Agramak, Bekas, Vyrovets, Aldan (RUS); – by the weight of 1000 grains – AC Percy (CAN), Korolek (BLR), Levsha (RUS); – by starch content – OM 2803 and B/n REN nuda and 039605 (UKR), Samuel (BLR), AC Percy (CAN), Vandrounyk, Belorussky, Maraphon (BLR), and Sibirsky Holozerny (RUS). – by crop capacity – OM 11-3007/3 (UKR), Abel (CR), Solomon (DEU), AC Percy and Boudrais (CAN), Maraphon (BLR), Valdyn 765, Vyatsky, Murom, Vyrovets, Bekas, Agramak, Aldan (RUS).
