Estimation of blast resistance of rice breeding lines, carrying resistance genes Pi-b, Pi-z and Pi-40 has been done. For phytopatological test isolates of pathogen from Krasnodar territory were used. As the results of the study Pi-40 gene showed maximal resistance to blast isolates. On the other part, rice line, carrying both genes – Pib and Pi-z showed significantly higher level of resistance with compare to standart variety Khazar
Development of plants in mixed or combined sowings is based on the symbiotic association in the basis of which we have decreased sexual process and its mechanism of genetic exchange among endosymbionts and stimulating of genetic exchange and expansion of the diversity of species among exosymbionts. The exception is the symbiosis of orchids and fungi - activators of orchids mycorrhiza with developed micellar system easily passing on saprophytic option. Coevolution of plant organisms with fungi indicates the specifics symbiogenic conjugate evolution, showing an example of the evolution of a small community with different contact with the external environment. The phenomenon of symbiogenesis has a long history and was manifested in a variety of different types of organisms. Today, some dependence of existence of one species from other organisms is observed at approximately 75% of higher plants and 90% of the animals in varying degrees of symbiogenic dependence from other species and taxa. Originality of symbiogenesis was analyzed by Academician A.A. Takhtadzhyan (1973) during its consideration of origin of eukaryotic cells as process of "assembly" of a complex system. Different approaches to determining the biological essence of symbiosis are known in the history of study of this phenomenon. On the whole phenomenon of symbiosis belongs to the category mutual relations of organisms of different phylogenetic groups
We have presented materials about nutrient media
for growing and industrial the cultivation of
Propionibacterium shermanii: Trypticase Yeast
Extract Glucose Medium, the culture medium
Ellinger and ATCC Medium 33. We have studied pH
change and its impact on the biomass accumulation
of propionic acid microorganisms. We have also
defined the best time of cultivation
Phytocenosis of the oak durmast and english oak on southern and northern exposition are studied and compared
The methods of using geographic information systems in solving problems of monitoring of oil spills are investigated. We have proposed the model of geographic information system for monitoring, forecasting, and oil spill response
The article presents the results of the comprehensive analysis of the main parameters of the health status of the population of Dagestan as the initial stage of the regional medical and ecological monitoring
The results of a long-term research of the influence of various biologically active agents (a humic preparation Lignogumat and microbiological Baikal EM fertilizer) on a structural state and the enzymatic activity of ordinary carbonated black soil are presented. It has been established that biologically active substances
contribute to increased enzymatic activity, humus and improve the soil structure
The present review highlights the applications of
electro-activated aqueous solutions in biotechnology and the food industry
The article presents the materials of the study of nutrient medium and selection modes of cultivations
The influence of climate factors on adaptiveness of Actinidia deliciosa strange cultivars is ascertained in damp subtropics of Russia. The basic limiting factor of its cultivation is precipitation quantity during flowering phase and fetal maturity