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Structure of elements productivity introgression cultivarsand lines of spring soft wheat of the Saratov selection

Within two years differing on weather conditions, the structure of a crop of spring soft wheat was studied. Comparison introgression grades and lines with genetically homogeneous grades has shown their approximate similarity on number of lateral shoot. The length of a stalk made on years of vegetation of plants from 469 to 605 mm, length of an ear − from 63 to 90 mm. The share of an ear from length of shoot varied from 10.9 to 14.6 %. The number of cones of an ear on the average for 2 years of studying made from 12.4 to 14.4 pieces.

Study of a dormant state in Azospirillum brasilense, symbiotic bacteria herbaceous plants

The evaluation of the viability of the bacterial cells in dormant (long-stored) cultures Azospirillum brasilense and the renewal of their reproduction in the presence of the protein WGA, a component of root exudates of the host plant, were studied. It was found that for 3.5 years the number of viable A. brasilense cells the culture retained sufficient to resume growth in fresh medium. Azospirilla also not lose viability when persisted under stress conditions. Protein WGA (wheat germ agglutinin) stimulated the reactivation of growth A.

Anatomy of the stalk of shoot Populus nervirubens Alb.

The anatomy of a stalk of annual runaway Populus nervirubens Alb was studied. Specific features of anatomy of a core, xylem and phloem a poplar are established. It is revealed two types of cages in the centre of a core and variety of cages in a zone adjoining with xylem. Sieve elements phloem have a kernel. Presence of cytoplasm, kernels and a time of a cellular wall in phloem fibres and sklereid is noted. Fibres settle down groups with various number of separate fibres in groups. Between fibres presence intercellular space is revealed.

Cultivar features of morphogenesis of winter rye seedlings

The article analyses the adjusting to the temperature fluctuations of the shoot and root system of seedlings of the winter rye in terms of biomass gain. The most substantial biomass gain is found in shoots of seedlings. It is stated that the rate of root/shoot supply of rye seedlings depends on temperature. At lower temperatures the root supply rate increases. Rye cultivars differ in terms of length of growth zone of germinal roots.

Integration of morphogenesis of shoot and root system of seedlings of wheat

The article studies the features of morphogenesis of wheat seedlings, the maintenance of pigments of photosynthesis at presence and absence of light, as well as at the removal of the main and additional germinal roots and shoot.

Sclerenchyma development in some species of trees of Rosaceae

Some features of the anatomic organisation of annual runaway of some kinds from family Rosaceae are studied. The comparative analysis of sclerenchyma development (quantity of groups of fibres in a bark, number of cells in group) is presented.

Microevolution of elements productivity of shoot spring soft wheat of the saratov selection

The structure of elements of efficiency of runaway of summer soft wheat of the different grades created from the beginning of the XX-th century is analysed. Various tendencies in development of length of a stalk, number of spikelets and kernels an ear, weight kernels are revealed.

Specific features of pigment distribution on spring wheat metamers

Studied the content of pigments and their distribution in seedlings of spring wheat in rainfed conditions. Changes in the quality and quantity of pigments in the zones of the body indicate the specificity of their growth activity. Comparative analysis of different pigments metameres suggests different physiological maturity subsystems each metamer.

The comparative characteristic of growth and development of some varieties spring wheat seedlings

The article presents a comparative description of the growth and development of seedlings of some varieties of spring wheat. To study the growth and development of seedlings used indicators such as the mass of the root system, the mass shoot, the root-maintenance. The results can be used in practical breeding.

Features of the development of root system spring wheat seedlings

Some features of the development of the root system of spring wheat seedlings were studied. Varietal differences in the length of the main embryonic root length of the zone division and extension have been installed. The study can be used in practical plant breeding.

Improving the efficiency of Allium regelianum A. Becker clonal micropropagation

An effective protocol for clonal micropropagation of Allium regelianum was optimized, including three following steps. In the first step bulbs-donors of explants were obtained from ripe seeds; in the second step – propagation under effects of exogenous cytokinins; and in the third step – final bulblets formation on the hormone-free medium. The second and the third steps may be repeated more than once. The importance of apex destruction for micropropagation was demonstrated.

The influence of rootstock on the growth and development of the shoot part yearlings saplings pear

The paper presents the results of studying the influence of five local rootstocks differing life form and degree of development of the tissues of the stem, on the growth and development of the cane part yearlings pears.

Metameasured principle of system of regulation efficiency of wheat

Features ontogeny wheat and existing hypotheses of integrity of a plant are considered. It is offered new to the concept of system of regulation of efficiency of wheat on the basis of autonomy formation metameres runaway and a special role sclerenchymes in a plant life.

Application of rhizobacteria for increase in the efficiency of the spring soft wheat cultivation

The data on the effect of the pre-sowing treatment with bacteria Azospirillum brasilense on grain yield and quality of spring soft wheat plants are given. The results obtained show a positive effect of rhizobacteria on yield under stress conditions of vegetation, with pre-sowing does not adversely affect the quality of the grain.

Influence of osmotic stress on wheat seedlings development

The growth reaction and pigments amount in wheat seedlingsunder water deficit modeling osmotic stress was studied. An environmental increasing of osmotic stress is an inductor of pigment systems changes. The pigment systems sensitivity depends on the type of pigments. The data observed in the experiment can be useful for early diagnosticpotential resistancevarieties to water deficit.

 

Cultivare features of development of envelopes kernel of the winter wheat

Experimental data on a thickness of envelope kernels in different years of vegetation of plants, to parametres and dynamics of development of cross cells pericarp seeds of grades of a winter wheat are resulted.

Influence of spectral structure of light on development kernel of summer soft wheat

Experimental data on influence of light of various quality on formation kernels wheat during the period embryogenesis are resulted. Linear parametres of development of separate structures kernel in various conditions of vegetation of plants are established.

Features of morphogeny of structural elements of immature embryos of lines wheat, cultivated in vitro

The paper presents the results of a study of the structural elements of morphogenesis of immature embryos of two nursing wheat lines cultured in vitro on agar medium containing lipopolysaccharide.

The structure mesophyll of the plate leaves of wheat

A variety of spending bunches of a plate of leaves is noted. Two facings had some bunches. In cells of an external facing are noted хлоропласты. Cells of an internal facing are presented by fibres sclerenchyma, having a kernel and plasmodesms. In mesophylle plates of leaves it is allocated 11 type cells. In the top leaves a variety of types of cells decreases, and the share of cells with the expressed meshy form increases.

Morphogenetic variability of the organization of structure of the leaf at damage various gaul the inducing organisms

Investigated features of variability of the structural organization of leaves of wood plants at damage by their gaul the inducing invertebrates.

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