Strength of the connection of kernels with an ear of the trititrigia variety ‘Pamyati Lyubimovoy’ in the dead-rape stage

Abstract

The development of new crops (for example, by hybridization) requires significant costs, both resources and time, and therefore justified reasons. The work on the development of trititrigia (perennial wheat) variety ‘Pamyati Lyubimovoy’ has been carried out by the FSBSI «National Grain Center named after P.P. Lukyanenko» for almost 70 years. The development of such grain crop makes it possible to apply new technological methods and technical means to realize its potential. It is also necessary to establish the applicability of existing mechanization means in its cultivation in various natural and climatic zones of the Russian Federation, where it is possible to obtain and analyze data on its physical, mechanical and biological characteristics. Despite a big breakthrough in the development of trititrigia (it was included in the State List of Breeding Achievements in 2019), there are few scientific works devoted to it and there is not enough information about it, or it is contradictory, fragmentary, and it is almost impossible to meet such grain crop in the fields. In this regard, the purpose of the current work was to obtain statistically reliable information on the value of the force of kernel separation from a trititrigia ear of the variety ‘Pamyati Lyubimovoy’ in the dead-rape stage. This indicator is important for estimating such crop properties as self-shedding after reaching full ripeness, determining the degree of heavy threshing, which will make it possible to identify the features of its harvesting by existing combines. During the current study, there were used statistically generally accepted data processing methods, namely, the estimation of release, the normality of distribution using the Shapiro-Wilk test, and the comparative Student’s T-test. The average value of the separation force along the entire ear length was 5.16 N. When dividing the ear into zones: lower, central and upper (20, 60 and 20 % of the ear length from the point of attachment of the ear to the stem, respectively), the values were 4.3 H, 5.65 N and 5.27 N.