Comprehensive evaluation of new lines Burley tobacco

Yovko Dyulgerski

Abstract: In experimental field of TTPI during the period from 2013 to 2015 are studied nine new created lines of Burley tobacco varietal group. Biological and economic evaluation is made of the studied variants. As a result, the study found that all studied lines have optimal for Burley tobacco biometric indicators and length of the vegetative period and outperform the standard Pliska 2002 variety. With the high yield features, Lines 1477 followed by Line 1467 and Lines 1466. The highest percentage of first class should it obtain from Lines 1466, which gives the lowest percentage of third grade. The results of economic evaluation showed that all new lines superior to the standard Pliska 2002 variety, both in production and in percentage of first class. Line 1466 is the best balanced for the requirements for the chemical composition of Burley tobacco. Line 1477 and Line 1466 are with the best performers in the complex of indicators studied, but they also have disadvantages that do not allow their presentation to IACAS (Executive Agency for Seed Testing, Approbation and Seed Inspection) for recognition as new Burley tobacco varieties. New lines are valuable genetic material that can be successfully used in Burley tobacco breeding.

Keywords: biological indicators; Burley tobacco; chemical composition; economic assessment; new lines

Date published: 2022-04-21