[The order of the bs, Skdh, and Aadh1 genes in chromosome 5R of rye Secale cereale L].

Segregation analysis was performed in the progenies obtained in analyzing crosses of hybrids of spring and winter accessions of rye Secale cereale L. and wild S. montanum subsp. anatolicum (Grossh.) Tzvel. (syn. S. strictum (J. Presl) J. Presl). The test genes controlled the brittle stem (bs), the allelic variants of aromatic alcohol dehydrogenase (Aadh 1) and shikimate dehydrogenase (Skdh), and the growth habit (Vrn 1). A linkage was observed in the inheritance of the brittle stem and the aromatic alcohol dehydrogenase and shikimate dehydrogenase alloenzymes. The order of genes was established to be bs-Skdh-Aadh 1, and the genetic distances were estimated to be bs-(9.0%)-Skdh, bs-(10.8%)-Aadh 1, and Skdh-(5.3%)-Aadh 1. The recombination coefficient between the Skdh and Aadh 1 genes varied from 2.2 to 18.2%, averaging 5.3%. The growth habit was inherited independently of the bs-Skdh-Aadh 1 linkage group.

[Genetic control of the spring habit in old local cultivars and landraces of common wheat from Siberia].

The inheritance of the spring habit was studied in 63 old local cultivars and landraces of common wheat from Eastern and Western Siberia and the Tyva Republic. Minimal polymorphism was observed for the dominant Vrn genes, controlling the spring habit in landraces of these regions. The control was digenic and involved the Vrnl and Vrn2 dominant genes in the majority (95%) of cultivars and was monogenic in three cultivars. None of the cultivars had the Vrn3 dominant gene, characteristic of the neighboring regions of China and Central Asia. Among 137 old local cultivars and landraces of Siberia, only one (cultivar Sibirskaya (k-23347) from Irkutsk oblast, was comparable in the response to the natural short day (photoperiod) to Chinese cultivars. Comparison of the results and the data reported for commercial cultivars revealed that the genotype frequencies of the dominant Vrn genes in Siberian landraces and commercial cultivars of common wheat remained essentially unchanged at least for the past 100 years. At the same time, Siberian landraces significantly differed in Vrn dominant gene frequencies from cultivars of the adjacent regions. It was assumed that the control of the spring habit by the two Vrn dominant genes is optimal for the climatic conditions of Siberia.

[Immunological reactivity in postinfarct cardiosclerosis]. / Immunologicheskaia reaktivnost' u bol'nykh postinfarktnym kardiosklerozom

In 77 patients with postinfarction cardiosclerosis the blood serum immunoglobulin level was studied along with some indices of the lipid and protein metabolism. An increased blood level of immunoglobulins A, M and G was observed in postinfarction cardiosclerosis cases, those with hyper-beta-lipoproteinemia, hypercholesterolemia and C-reactive protein having a significantly higher level of immunoglobulin G and than the rest of the patients. In those having an increased content of immunoglobulin G in the blood serum hypo-beta-globulinemia was observed, as well as a considerable increase of the gamma-globulin fraction as compared to those having a normal or decreased level of immunoglobulin G. Proceeding from these data the authors suggest the presence of autoimmune shifts in the patients with postinfarction cardiosclerosis that are closely connected with lipid and protein metabolism disorders.