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The phylogeny of members of the family Linaceae DC. ex Perleb has not been adequately studied. In particular, data on the phylogenetic relationship between Linum stelleroides Planch. and other representatives of the blue-flowered flax are very controversial. In the present work, to clarify this issue, we obtained DNA sequences of three nuclear loci (IGS and ITS1 + 5.8S rDNA + ITS2 of the 35S rRNA gene and the 5S rRNA gene) and eight chloroplast loci (rbcL, the trnL–trnF intergenic spacer, matK, the 3′ trnK intron, ndhF, trnG, the psbA–trnH intergenic spacer, and rpl16) of 10 Linum L. species (L. stelleroides, L. hirsutum, L. perenne, L. leonii, L. lewisii, L. narbonense, L. decumbens, L. grandiflorum, L. bienne (syn. L. angustifolium), and L. usitatissimum) using high-throughput sequencing data. The phylogenetic analysis showed that L. stelleroides forms a basal branch in the blue-flowered flax clade. Previously found inconsistencies in the position of L. stelleroides and some other species in the Linaceae phylogenetic tree resulted from the erroneous species identification of some of the studied plant samples.

No abstract

В статье представлены результаты изучения влияния регуляторов роста (Biodux, Энерген, Иммуноцитофит) на продуктивность некоторых представителей рода хоста [Hosta albo-marginata (Hook.) Hyl., H. fortunei (Baker) Bailey, H. lancifolia (Thunb.) Engl., H. plantaginea (Lam.) Aschers., H. sieboldiana (Hook.) Engl., H. glauca var. aurea-variegata (Sieb.) Stearn, H. undulata (Otto et Dietr.) Bailey), культивируемых в Башкирском Предуралье. Показано, что изученные регуляторы роста обладают видоспецифичным действием. Наиболее эффективным препаратом является Biodux, самыми отзывчивыми видами — Hosta glauca var. aurea-variegata и H. plantaginea.

The aim was to obtain Japanese iris varieties with different flowering periods, original colour of flowers, good corrugation of petals and greater resistance to various adverse environmental factors in the south of Primorsky Krai, Russia. New varieties were created by spontaneous and directed hybridization of geographically distant varieties, selection of adaptability donors and involvement of radiation mutagenesis in the breeding process. Intervarietal hybrids were characterised by intermediate inheritance of colour and flower shape, generative and vegetative productivity, plant height and flowering time. The inclusion of hybrid forms in the breeding process allowed the variety of flower colour and shape, flowering time and generative productivity to be expanded in the F2 generation. Promising interhybrid forms with biological characteristics that determine the possibility of their cultivation under the extreme conditions of the subregion were selected. A hybrid fund was created: over 135 adapted genotypes and 14 varieties. On the basis of the long-term experimental research, the expediency and necessity of breeding work with Japanese irises under the conditions of the subregion was established.