Characteristics of oriental tobacco lines ecotype Dupnitsa

Svetlana Malinova, Maria Kasheva

Abstract: The study was conducted in the period 2019 - 2021 in Experimental Field - Rila, at the Institute of Tobacco and Tobacco Products - Markovo. Three new lines of oriental tobacco and two varieties of high quality oriental tobacco Dupnitsa 160 and Katerini (Greece) and variety Rila 544 (standard) are included. Biometric measurements were performed on the following indicators: plant height (cm), number of leaves, length and width of the 14th leaf (cm). Yield (kg/da) and quality of dry tobacco were reported. Chemical analysis of basic chemical indicators was performed - nicotine, sugars (soluble carbohydrates), total nitrogen. Mathematical evaluation of morphological and economic features was made by analysis of variance. From the obtained data it can be concluded that lines 503 and 504 best meet the new requirements, forming a higher yield compared to the control and both varieties and quality similar to that of Dupnitsa 160 and Katerini. Valuable source material for the selection of oriental tobacco ecotype Dupnitsa has been created.

Keywords: biometric indicators; economic indicators, chemical indicators; oriental tobacco

Date published: 2022-06-21