The structure of the correlations of eggplant in different placement schemes of plants

Abstract

The correlation analysis was carried out between 11 biometric and economic characteristics of 6 eggplant varieties in 3 variants plant density (placement schemes 70х25, 70х35, 70х45) under the conditions the Left Bank Forest-steppe of Ukraine. By method of maximum correlation path, the structure relationships studied features and their variability in different variants of the experiment was determine.

Two separate correlation agglomeration were identified in all schemes plant placement. The basis of the first agglomeration with high correlation bonds between signs was four signs: prevalence general disease, the degree development of general disease, yield and fruit market. A clear classification yields was determined with a degree development of the total disease incidence with a close correlation link between these features from -0.83 to -0.87, depending on the variant of experiment. The second agglomeration in different variations of experiment consisted of various elements.

Most signs were grouped in the first agglomeration when growing eggplant in the layout of plants 70x25 and 70x45. Therefore, under scheme 70х25 here also included height of a plant, width of a plant, contents in fruits dry substance and area of ​​assimilation surface. In the variant with the scheme 70x45 to this agglomeration included width of the plant, leaf length, leaf width, content in the fruits of total sugar fell. In the variant with the scheme 70x35 to this agglomeration, in addition to the main 4 signs, included only the area of the assimilation surface.

The second agglomeration under layout scheme of plants 70x25 consisted of three elements: leaf width, content in the fruits of the total sugar and length leaf. In the variant with scheme of placing plants 70х35 to these signs have joined height plant, width plant and contents in fruits of a dry substance. In the variant with scheme 70x45 the second agglomeration also consisted three features:  contents in fruits of a dry substance, area of assimilation surface and the height of plant.

The obtained results allow us to assume that the density placement of eggplant plants in field conditions affects to structure of correlation relations between features. A complex of agreed features that outline the peculiarities of growth, development and response to conditions for the cultivation of eggplant plants as a holistic system were noticed.