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Biomedical subjects

G S Stepanov

Publications and source records attributed to G S Stepanov.

41 records · Page 3Linked to original sources
PubMedDate not supplied

[Hormonal interrelations in the hypophyseal-ovarian system in heifers during prostaglandin F2-alpha-induced estrus].

Study of prostaglandin F2 alpha action, synchronizing the estrus, in experiments on heifers demonstrated that Estrumeit (made by ICI, Great Britain), rostaglandin F2 alpha drug, in a dose of 500 micrograms was an active luteolytic factor, leading to the corpus luteum regress, determined by a fall in the progesteron level in the peripheral blood. During the estrus induction there was a short-term elevation in production and excretion of testosterone, this pointing to the prostoglandins participation in the activation of the androgenic ovarian function. Prolactin hyposecretion was shown to be a necessary condition for the realization of general biological processes for the occurrence of estrus.

Animals↗
PubMedDate not supplied

[Ineffectiveness of the back cross method in selecting hemp for heterosis].

In the back crossings the heretability caused by the additive effect of the genes predominates. The selection on the characters controlled by the additive genes leads to the homozygosis increase of the population and to the reduced vitality of the plants. The repeated crossing of the heterozygous hybrid plants with the parental form homozygous according to the recessive gene increases the quota of the genes of the latter. It results in the intermediate type of inheritance for all the elements of the back crossing hybrids productivity.

Cannabis↗