THE INFLUENCE OF CLIMATE CHANGE ON THE LEAF AREA FROM THE LEAF FLAG LEVEL TO THE SPRING OATS

Abstract

Nowadays, oats occupy a very important place among cereals, belonging to a group of functional and healthy foods. Globally, especially in more developed countries, both oats and many of its derivatives are consumed. In addition to satiety and pleasant taste, the consumption of oats has a number of beneficial properties for healthAmong animals, oats should not be missing, especially for certain categories. For example, it is very beneficial for the optimal development of young animals, as well as for breeding. In this study, the leaf surface was taken as a variable because it has an important role in evaluating the vital processes in the oat plant, such as photosynthetis and evapotranspiration that are responsible in the process of energy transformation. At the level of the oat plant, the leaf flag has an extremely significant role because, depending on the size of the leaf surface, a net assimilation rate is expected as high as possible for the oat varieties. And the rate of assimilation mentioned, depends on a number of factors, called stressors, such as drought, salinity, cooling, frost and floods that negatively influence the overall growth of oat plants. Thus, in this paper, we highlight the impact of climatic factors, the so-called stress factors mentioned above, on the oat plant, especially on the leaf flag. Samples taken from the research field were measured using the device LI-300 Portable Area Meter (leaf surface) to determine the leaf area on the leaf flag for the 15 genotypes in the comparative culture of competitions in the Oat Improvement Laboratory of S.C.D.A. LOVRIN. In conclusion, it is obvious the difference of the leaf surface at the 15 genotypes from the comparative culture of competition for spring oats in the two years, as well as the difference between precipitation where we have 229 l / sqm in 2019 and 168 l / sqm in 2020 and the difference between temperatures, 13.05 ℃ in 2019 and 13.75 ℃ in 2020. As a result of this study, we concluded that the greatest impact on the leaf surface of the leaf flag level is precipitation according to the literature where we know that oats need a large amount of water for optimal development.