VARIABILITY OF THE MOST IMPORTANT QUANTITATIVE PROPERTIES IN SOME VARIETIES OF TOBACCO TYPE BURLEY

The morphological properties that characterize the type of tobacco or the variety in one type are known as qualitative and quantitative. The quantitative properties are regularly conditioned from the impact of a larger number of genes and also they depend from the environment factors. The investigations are done in 2015 on experimental field in the Scientific Tobacco Institute in Prilep, with four repetitions with following varieties: Posejdon (control), BD-1, B-1246 and one new perspective line DP-1710. The aim of this investigationes is to show the variability of the most important quantitative properties: height of the plant with inflorescence, the number of leaves per plant and the length and width of the biggest and the smallest leaf from the middle harvesting belt in tobacco type Burley. The results from the research are processed statistically by these parameters: average value (x)̄, average value error (Sx ), standard deviation (S), variation coefficient (CV) and variation width (WV). From the research, we established that the subject varieties are stable enough, the variability is very low because everywhere the variation coefficient was lower than 10%. However, the newly created line DP -1710 is with the slightest variation in the tested properties. Among other things, it is on average the highest (x ̄= 188 cm) and has the largest leaves (x ̄ = 63 cm), which is a positive feature in coarse tobacco of this type.