Stochastic predetermination of bioproductivity component by the growth features of winter wheat upper leaf blades

Abstract

The relative and absolute importance of a number of traits, in particular, agrophysiological, morpho-functional, at the level of individual organs and parts of an integral plant, and/or sowing for the development of features of biological traits, and other agroecologically significant components of the crop production process, has been discussed in research papers for a long time. The purpose of the study was to search for agroecologically significant signs of growth of the upper leaf blades (ULB), which can empirically and potentially determine the development of the grain dry mass (GDM) of winter wheat under “model” conditions of biological agrotechnical influences designated as biological fertiliser systems. Methods used in the research: methodological approaches of field experiments, gravimetric, convective drying, and stochastic methods. The development of GDM was largely driven by potentially scalable integral growth traits of ULB – leaf area duration, biomass duration (LADULB, BMDULB, respectfully) or their combinations with potentially non-scalable features of the average growth rate ULB – net assimilation rate, relative growth rate (NARULB, RGRULB, respectively). It is also highly probable that LADULB may play a central role in the development of RGRULB or BMDULB (but not NARULB). The coordination of RGRULB with NARULB was not excluded, although it was overly complicated. The construction of such and similar studies in the line of an exhaustive explanation of consistent systemic and mechanistic predeterminations of the production process with signs of ULB growth under various agrotechnical and biological influences will improve discursive and mathematical simulation constructs that can characterise and integrate the differential effects of plant components on photosynthesis of leaf cover, crown, and ultimately on the processes of development of components of the final biological and economic yield of winter wheat

Keywords

• signs or features of growth of upper leaf blades
• leaf area and biomass durations
• net assimilation and relative growth rates
• winter wheat
• “model” biologically improved agronomic conditions – biologically improved fertilisation systems