In the article, with a descriptive method and a method of analysis and synthesis, we have conducted a study of species diversity of Lagenaria on the basis of a miniature sculpture of netsuke. In Japan and China, in the period from the 17th to the 20th century, the most common was 9 species. The biological peculiarities of
some rare species of lagenaria has been described
The data of the morphological, cultural, physiological and biochemical characterization of α-glucosidase inhibitor producer, isolated from soil sample by selective methodic is presented in this work. It is shown that on the set of listed attributes the culture can
be referred to Kitasatoa genus. The 9th edition of “Key to the bacteria,” Bergey, Kitasatoa genus moved to a group of “Streptomyces and related genera” and transformed into the Streptomyces genus. In this case, strain 839 was named Streptomyces species, it was given the number 1328-D
Rice fields all over the world are one of the places of invasion of adventive weed species. They can reduce the yield of the rice crop by 20-30%. The phytomonitoring studies in the rice systems of the Krasnodar region in 2017 have discovered a new species of Ammannia coccinea Rottb. (Lythraceae) among the weed vegetation of the grain crops. The article gives a botanical description of the species; its biological and ecological features and ways of its distribution are discussed. Ammannia coccinea is an annual plant, light-loving and hygrophilous. The country of origin is North America. This is one of the most malicious weeds in California and the United States in general. In Asian and European countries, the plant is brought with rice seeds. Currently, in many rice-growing regions of the world, the species A. coccinea tends to spread and increase the severity of infestation. The species was registered in the Krasnodar region in the rice fields of the Abinskiy, Kalininskiy, Krasnoarmeiskiy and Slavyanskiy regions. The number of plants of A. coccinea does not exceed one plant per 10 m2, with the exception of three locations of invasion, where the density is up to 5-7 pcs/m2 and the plants occupy an area about 0.5 hectares. Considering the fact that in rich soils the height of the plant reaches 1 m, with the ramification of the stem, the plants go to the first tier. They successfully compete with rice plants, suppressing their growth and development. This can adversely affect crop yield. The article discusses the reasons for the appearance of A. coccinea in the rice fields of the Krasnodar region
Green building, forestry, agriculture of the Rostov region is in desperate need of resistant and long-lived samples of deciduous trees of the first grade. The main object of the search of promising forms of deciduous trees were artificial plantations of Quercus robur in the Botanical Garden of SFU. The research identified several of samples of Quercus robur, which are of economic interest. Based on ecological and biological properties and economic qualities, the most promising on was a sample of Quercus robur var. tardiflora, planted in 1888. This sample is less receptive to pests and diseases. It also has a high winter hardiness and drought resistance and significantly superior to similar samples of Quercus robur along longevity and has a high decorative effect. Dedicated sample of Quercus robur var. tardiflora, and his generation from seed is very different from other samples of the population by time of phenological phases. The all main henological phases of this sample occured later by on 10-15 days. The sample belongs to the group of plants of late phenological dates start and end of the growing season. The phenology of dedicated samples contributes to their high steadiness into regional climate. It propagates by sowing freshly harvested seeds. Phenological features of the selected sample might be inherited in the seminal generations
At present, the demand of producers and the market
determine the model of future varieties. Task for
breeders is to develop varieties having a set of
economic and biological traits fitting into the model
templates. The developed varieties and hybrids should
ensure for climatic conditions of the Krasnodar region
consistently high yields, better product quality and
maximum efficiency of crop industry. As a result of
breeding work there was developed a watermelon
variety called Yubilyar, belonging to medium-ripening
group, having high figures of economically valuable
traits. The variety has resistance to unfavorable factors
of growing conditions and stable yields. It is suitable
for cultivation in rainfed areas and practically does not
require protective measures against major diseases
prevalent in the southern regions. Fruits are large, of
wide elliptical shape, with bright crispy red flesh and a
thin crust. Determined by stable fruiting under
different weather conditions, friendly yield return,
commercial fruits – up to 92%. Potential yield – up to
25 t/ha. Good stored for 40-50 days, suitable for
transportation on a long distance. Passed preliminary
tests on the fields in the Krasnodar, Rostov regions and
the Republic of North Ossetia. According to results of
evaluation from producers the variety meets
requirements of the market and has a commercial
appeal
The article presents the first results of studies of
somaclonal variability, which take place during
cultivation of tea plants tissues and organs in vitro
culture. As a starting material, there was used
morphogenic callus, isolated from the basal part of tea
microshoots, because callus increases somaclonal
variability. An optimized protocol of the nutrient
medium for induction gemmogenesis to product somatic
clones of tea plants in vitro culture was developed.
Morphogenesis calluses, initiated from the basal part of
tea microshoots and subcultured on the nutrient medium
with 6 – BAP – 2,5 ml + gibberellic acid – 1,0 ml +
Tidiazuron – 4,0 ml + Tryptophan – 1000 mg,
distinguished by high rates of induction of
gemmogenesis – 63,3 %. The article studies the effect of
exogenous growth regulators on morphological and
growth indices of tea callus culture in vitro
It this article, the situation in dairy practice with nutrition factors caused metabolic diseases such as ketosis, acidosis, lameness and a decline in fertility is shown. The article has the proposes on the nutrition of highly productive cows in transition period
Milk protein hydrolysates are analyzed for the presence of low molecular weight fractions of peptides. Bioactivity is shown; the requirements for obtaining are streamlined; effect of peptides on the physical and chemical characteristics of kefir is revealed
The article presents data on the occurrence of pathological forms of trunk in hardwood species in suburban and green area of the city of Voronezh. Based on the studies, we have considered a pathological feature complemented and differentiated
This article is devoted to the biotechnological properties of the oil-degrading strain Rhodococcus erythropolis B2, which allow us to use microorganism B2 as a base of biopreparation: hydrocarbon- destructive potential, growth characteristics on the different media, producing phytohormones and biosurfactants, adhesive and floatation activity, and also laboratory and field tests