Specific features of yield formation and manifestation of productivity traits of winter wheat varietres under the conditions of the southern steppe
Journal Title: «Таврійський науковий вісник» - Year 2017, Vol 97, Issue
Abstract
The paper presents the results of determining the parameters of stability and plasticity of the manifestation of grain productivity of different winter wheat varieties. The research has revealed a number of varieties of the intensive and versatile types. The structural elements of productivity, (ear length, number of ears and grains in an ear, weight of 1000 grains) are in a direct correlation dependence with the weight of grains in the ear and grain productivity as a whole. Some elements of the yield structure can be compensated to some extent by other components formed under more favorable conditions at the next stages of organogenesis. For instance, the number of grains in the ear depends less on the environmental impact, but in most cases on the action of factors in the first half of the plant vegetation period; the weight of grains in the ear is formed mainly at the end of vegetation before ripening. Thus, every plant and every variety is a system of interrelated traits and properties with different levels of their manifestation depending on the genotype, growing conditions and environmental factors.
Authors and Affiliations
В. В. Базалій, І. В. Бойчук, О. О. Домарацький, С. О. Оніщенко, А. С. Стець
Keywords
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