Grygorchuk N. The features of the initial material and its usage efficiency to inerease of soybean oil content Glycine max (L.) Merr

Subject: accumulation of oil in soybean seeds depending on hydrothermal conditions of the region, the duration of a vegetation period and concrete conditions of growing, variation and inheritance of oil seed content the efficiency of plant individual selection for increased level of oil. Aim: ascertainment of the nature of inheritance, variation and the correlation of oil seed content of soybean variety samples by means of interspecific hybridization and the evaluation of the efficiency for the development of a new highly-oil-bearing original material for breeding. Methods: field, laboratory, statistical. Novelty: the level of oil content variation in soybean seeds under the influence of agroclimatical conditions of the year and different quality of individual plants for this parameter are determined. The importance of ecological factors for the variation in oil seed content is shown; the relayion of oil seed content with the other economical characters is revealed. Results: the ascertained peculiarities of inheritance and trait variation and the selected forms as to oil content ensured the development of the valuable original material of soybean. Some sources and donors for high oil content are identified, a possible considerable reduction of relationships between protein and oil contents in the seed of soybean breeding material. Application stage: 7 soybean varieties, such as Opheliya, Sprint, Sribna, Lara, Sedmitsa, Masha, Sharm, which vary by improved seed productivity, good adaptability, higher oil seed content, are developed and registered in the Plant Variety List of Ukraine. 3 forms, which have been certified and registered in Plant genepool of Ukraine, are placed in NCPGRU. Application area: breeding institutions, AIC of Ukraine.