Izvestiya of Saratov University.
ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


зерновка

Влияние засухи на продуктивность яровой мягкой пшеницы

Исследовано влияние погодных условий на развитие семян мягкой яровой пшеницы, морфогенез и продуктивность побега. Засухоустойчивым сортам пшеницы свойственен более развитый конус нарастания побега зародыша зерновки. С момента прорастания семян наблюдается различие сортов по состоянию конуса нарастания и листьев. Высокая температура и недостаток влаги в период вегетации растений уменьшает площадь листовой поверхности, что зависит также от числа листьев и их метамерной принадлежности.

Biological Characteristics of Productivity of Various Breeding and Genetic Forms Winter Rye

The paper presents the results of a study of the biological characteristics of productivity of various breeding and genetic forms of winter rye, presented by grades and district of the Saratov breeding. Significant varietal differences in development of individual morphological parameters of the shoot.

Morphological Characteristics of the Main Bud of the Embrio the Grains of Winter Rye

The paper presents the results of a study of the morphology of the cone of growth and primordium of leaves of the main bud of the embryo grain of winter rye of some varieties from different breeding centers in Russia. The length of the cone of growth reached in the investigated varieties of rye from 51 to 89 ?m. Some varieties of rye in the cone of growth of the embryonic shoot of the embryo grains indicated the embedding of the 4th phytomere in the form of a leaf rudiment.

Influence of Lr-genes on Сharacteristics of Wheat Grain Structure

To protect bread wheat from rust diseases, introgressive resistance genes located in alien translocations are commonly used. In the literature there are no data on the effect of Lr-genes on the structures of the embryo grain. For the solution of these problems, developed lines Dobrynya, resistant to leaf rust. In work results of research of the anatomic-morphological structure of the grains wheat Lr-genes of resistance to leaf rust.