Genetic sources of high productivity and adaptability of pea varieties in conditions of the Right-Bank ForestSteppe of Ukraine

Purpose. To determine the adaptive features of collection samples of peas in terms of yield and quantitative economic and biological characteristics. To investigate the patterns of variability of economic and biological characteristics depending on environmental conditions. According to the indicators of regression coefficients (bi) and stability variance (Si2) to establish samples with high and medium plasticity, its stable manifestation on the basis of productivity in the conditions of the Right Bank Forest-Steppe of Ukraine, which can be used as sources in adaptive breeding. Methods. Experimental, measuring, visual, quantitative, laboratory, mathematical and statistical. Results. The results of many years of the research allowed to thoroughly assess the collection of pea samples by economic and biological characteristics, to establish the limits of variation of these characteristics and to identify promising source material with a set of adaptive properties for selection of high-yielding varieties in the Right-Bank Forest-Steppe of Ukraine. Based on the results of experiments and analysis of trends in selection of grain varieties of peas, the most realistic is the creation of new forms with 7-8 beans, 3-5 productive nodes in plants and 5-6 seeds in a bean, which would allow yields up to 7.0 t/ha and above at a weight of 1000 seeds 250-280g. Correlation analysis revealed the relationship between yield and economic and biological characteristics of collection samples. Conclusions. According to the results of the many years research, the prospects of collection samples of peas of different ecological and geographical origin as a source material with a set of adaptive properties for the selection of new high-yielding varieties in the Right Bank Forest-Steppe of Ukraine were established. The selected samples can be used as genetic sources in practical selection to create new varieties with high productivity.