grain

Simultaneous Determination of Fungicides ThIuram and Tebuconazole in Grain by High Performance Liquid or Micellar Electrokinetic Chromatography

Authors: Amelin V. G., Tretyakov A. V., Bolshakov D. S., Lavrukhin D. K.

Optimal conditions for separation and determination by HPLC or MEKC combined fungicides thiuram and tebuconazole are selected. The method of simultaneous determination of pesticides in grain offered. The recovery of pesticides was 90–95%. Lower bounds defined by the contents of pesticides, taking into account the concentration amounted to 0.005 mg kg−1 in the MEKC method, and 0.0025 mg kg−1 in the method of HPLC. The relative standard deviation of the results of the analysis is less than 0.09, analysis of the duration of 1–1.5 h.

Influence of Lr-genes on Сharacteristics of Wheat Grain Structure

Authors: Prokhorova T. M., Stepanov S. A.

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. The differences between the lines with the translocations on the main embryonic structures grain: the shield, the coleoptiles and the embryonic leaves.

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

Authors: Stepanov S. A., Kargatova A. M.

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 μm. 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.