Morphobiological features of diaphragm formation in in vitro and ex vitro grape plants of interspecific origin
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45Clonal micropropagation of grape varieties of interspecific origin Moscow white (Vitis amurensis Rupr. x Vitis vinifera L.) showed that on the 40 th day of the animation stage, a mono-podial type of branching is typical for micro-plants, and there is no diaphragm in all nodes of micro-shoots. On the 120 th day of growing in containers, the researchers revealed that the nodes of the plant shoots, from the 1 st to the 6th, have a monopodial branching type. Parenchymal cells which form an incomplete diaphragm are present in the seventh node.
Structure features of the stomatal apparatus of representatives of the genus Thymus L.
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45Thymus vulgaris L. and Thymus serpyllum L. are sought-after medicinal plants in many countries of the world for their essential oils, flavonoids and tannins. The species of this genus are extremely polymorphic, both in their morphological and anatomical structure and in their biochemical composition. Stomata play an important role in growth and yield formation. The study of the stomatal apparatus and its features is a relevant research topic for agricultural crops.Eight specimens of Th. vulgaris and three specimens of Th.
SUSTAINABILITY OF WHITE CLOVER (TRIFOLIUM REPENS L.) IN SOWN SWARDS DEPENDING ON THEIR COMPOSITION, INTENSITY MOWING AND NITROGEN FERTILIZERS
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45The authors carried out studies at the experimental field station of Russian State Agrarian University - Moscow Timiryazev Agricultural Academy in 2008-2020. The study aimed to determine the resistance of white clover in mixtures with various types of grasses with two- and three-cut clipping treatments. In the experiment with four to five-component mixtures, the proportion of white clover reached 36-53% in the botanical composition of swards with the content of perennial ryegrass in the fourth year of life. It did not exceed 22-23% in the mixtures with cock’s foot.
Evaluation of breeding qualities of hog producers using the BLUP method
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45The paper presents the approbation results of the program “Assessment of the breeding value of hogs using the BLUP method” developed by All-Russian Research Institute of Pedigree Breeding (VNIIplem) in cooperation with LLC “Selikom” (Ryazan). The authors show some factors affecting the breeding value of the animals and give the basic provisions of their genetic evaluation with the method of best linear undistorted prediction (BLUP).
Isolation of specific bacteriophages - Pseudomonas savastanoi pv. glycinea - and their use in soybean bacterial blight control
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45Bacterial blight is one of most harmful diseases of legumes, reducing the profitability of soybean production in Russian Federation. Among a number of Pseudomonas isolates obtained from diseased seeds and plants of soybean, 4 strains were selected and confirmed as Pseudomonas savas-tanoi pv. glycinea (Psg). Properties of the isolated bacteria were similar to type strain of Psg CFBP 2214 in plant virulence, LOPAT tests, and PCR analysis for coronafacate ligase gene, and partly -in the phage reaction profile.
Individual sensitivity of brood mares’ blood cells to modulated ultrasound
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45The authors prove a possibility of laboratory diagnostics of early stages of pregnancy in female horses. Exposure of a temperature-controlled mare blood samples to standing amplitude-modulated ultrasonic wave with a generation frequency of 0.88 MHz, an intensity of 0.05 W/cm 2 and a modulation frequency from 10 to 20 Hz for 15-20 sec leads to a significant change in the morphological state of blood cells.
To the 85th anniversary of honored agronomist Vladimir Ivanovich Susov
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45The article is dedicated to the memory of the honored agronomist, PhD (Ag) Vladimir Ivanovich Susov. The article describes the contribution of V.I. Susov in the development of agronomic measures for the cultivation of fruit trees traditional for the middle zone of the European part of Russia (apple, pear, cherry, plum) and less common ones (apricot, quince, peach, walnut and many other valuable trees). The article is dedicated to the 85th anniversary of V.I. Susov.
Parameters of the intervention policy in the wheat market
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45The article solves the problem of updating the parameters of the policy of purchasing and commodity interventions in the Russian wheat grain market. These parameters are the recommended range of the intervention fund size and the corresponding price interval, outside which interventions are necessary (commodity beyond the upper boundary and purchase beyond the lower boundary). The applied methodology is based on the updated simulation model of the intervention policy on the wheat market, previously developed at the Center for Agro-Food Policy of the RANEPA.
Use of integral leukocyte indices in assessing the eff ect of stress factors on goat homeostasis
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45The principle of a quantitative-qualitative approach, which reflects the activity of the organism while distinguishing its specific and non-specific adaptive responses, includes the requirement for quantitative assessment of specific changes in the body. To achieve the research objective, the resources of integral leukocyte indices (ILI) were used to assess the homeostasis of goats during castration, weaning from dams and transfer from pasture to stabling.