Heterogenety of flax interspecies hybrids for anatomic stem parameters
Interspecies hybrids F<sub>1</sub> from crossing fiber flax (L. usitatissimum L.) cultivars with wild species (blue flax L. angustifolium Huds. and pale flax L. bienne Mill.) were developed for expanding and enriching fiber flax gene pool. The traits defining the content and quality of flax fiber were studied in the produced hybrids as against the parental forms. The investigations performed have shown that flax hybrids Fj combine resistance to lodging with good parameters of fiber productivity. There were selected accessions which are not inferior and sometimes are superior to the parental fiber flax cultivar in plant height, industrial stem length and some anatomic stem parameters. The data obtained point to a preferable use of L. angustifolium in interspecies crosses.