Selection ideatype of a new variety of oil flax adapted to forest-steppe conditions

Abstract

Goal. To create a new ideatype of oilseed flax, which will increase seed production in the Forest-Steppe with high yields, seed quality, and disease resistance. Methods. Field method -to determine the interaction of the subject of research with natural and agronomic factors; measuring and weighing -to determine the height of plants, yields of straw, fiber, seeds; settlement-comparative -for the economic evaluation of cultivation of different varieties of flax; statistical, dispersion -to identify the reliability of the results of experiments. Results. Based on field researches of the registered modern varieties of oil flax the key economically valuable signs which were used for the creation of a selection ideatype of a variety of oil flax adapted to the Forest-Steppe zone are allocated. Valuable selection lines of oil flax, which have a set of valuable features and significantly exceed the variety standard for productivity, are selected according to the main parameters of the ideatype in the selection process. Conclusions. Based on field researches and data of laboratory analysis the selection ideatype of a variety of oil flax adapted to conditions of the Forest-Steppe zone is developed. The proposed model can be used at the preparatory stage of selection -in the selection of parental forms for crossing, and directly in the selection process -in the selection of plants among different generations of hybrids in selection nurseries, and in the assessment of the resistance of varieties to biotic and abiotic factors, which was used in selection work of the NSC "Institute of Agriculture of NAAS".

Influence of plant habitus traits on formation of seed productivity in flax

“…An effective means of increasing crop yields is the introduction into production of flax varieties with a high genetic potential for productivity, which depends on the wide genetic diversity of the source material (Poliakova & Lyakh 2016;Kryvosheieva et al, 2020;Porokhovinova et al, 2021). Of great importance for solving this problem is the further improvement of the culture using the latest breeding methods, taking into account the genetic characteristics of the parental components and subsequent selection based on the idea type of the variety.The low efficiency of breeding is associated with the lack of a clear understanding among the breeder of exactly what traits should be used to select high-yielding genotypes that have a decisive influence on the productivity potential of oil flax (Zaika et al, 2020).…”