Abstract
The aim of the study was to determine the breeding value of advanced lines of fibrous flax and oilseed flax (linseed) on the basis of comparative experiments with reference varieties. In field experiments conducted in 2019–2020, the HDH line of fibrous flax and the R26 linseed line were assessed in terms of significant phenotypic traits and also traits affecting the yield structure. Due to the fundamentally different weather conditions in the growing seasons of 2019 and 2020, it was also possible to determine the susceptibility of the studied genotypes of flax to climatic stress factors. The obtained results showed the high breeding value of the HDH line as a potential new variety of fibrous flax. The R26 line did not exceed the reference varieties in terms of the traits essential for the oily form of the cultivated flax cultivars, but it was characterized by a favorable morphological and yield-forming structure for dual purpose varieties. Moreover, both assessed lines showed high resistance to unfavorable climatic conditions.
Highlights
Lines as Potential New Varieties.Flax (Linum usitatissimum L.) is a species with very diverse application potential.The raw materials obtained from the cultivation of flax are used, among others in the pharmaceutical, food, textile and energy industries
We present the results of field experiments with our two breeding lines-HDH and R26, which are characterized by their high yielding potential
The functional characteristics of the R26 line were assessed as a potential new dual-purpose variety that could be recommended for cultivation
Summary
One of the main problems of breeding new varieties of flax is the low variability of the most important functional traits [14,15]. This is generally caused by the low genetic diversity of cultivated forms. We present the results of field experiments with our two breeding lines-HDH (fibrous flax) and R26 (linseed), which are characterized by their high yielding potential. In these studies, selected functional traits of new breeding lines and seven reference varieties were compared. The functional characteristics of the R26 line were assessed as a potential new dual-purpose variety that could be recommended for cultivation
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