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

Authors: Ilyin N. S., Gagarinsky E. L.

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

Authors: Antonyuk L. P., Starichkova N. I., Slavkina E. A., Khanadeeva M. A.

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

Authors: Kargatova А. М., Ermolaeva Т. Y., Nuzhdina N. N.

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

Authors: Strapko A. M., Kasatkin M. Y.

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

Authors: Korobko V. V.

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.

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