Assessment of adaptive potential of domestic varieties of tobacco in agroclimatic conditions of central part of Forest-Steppe of Ukraine

Abstract

The purpose. To study features of cultivation and efficiency of different varieties of tobacco in agroclimatic conditions of central part of Forest-Steppe of Ukraine. Methods. Field, laboratory, statistical. Results. It is established that in the given agroclimatic conditions plants of tobacco completely pass all stages of ontogenesis and form high-grade seeds. Varieties of tobacco Virginia and Temp 321 are characterized as late-ripening (vegetative period 115–120 days), other varieties may be characterized as middle-ripening (100-108 days). Varieties of tobacco are differed on height of plants, so they were conditionally divided into 3 groups: tall (Ternopolskii 7, Ternopolskii 14, Virginia, Trapezond), medium-height (Temp 321, Sobolchskii 33, Berlei 9, Spektr), low-height (Berlei 38, Berlei 46, Ternopolskii perspectivnyi). The greatest leafing was fixed at varieties Temp 321, Berlei 46, Sobolchskii 33, Berlei 9. As to the size of leaves they allocated varieties Ternopolskii 7, Ternopolskii 14, Ternopolskii perspectivnyi, Berlei 46 and Virginia. The highest productivity of raw material under all schemes of planting was at varieties Virginia (3,24 t/hectare) and Ternopolskii 7 (3,16 t/hectare). The least productivity in agroclimatic conditions of central part of Forest-Steppe of Ukraine was fixed for varieties Spektr and Sobolchskii 33. Conclusions. It is established that agroclimatic conditions of central part of Forest-Steppe of Ukraine are favorable for cultivation of the majority of domestic varieties of tobacco. In the given zone plants of tobacco completely pass all stages of ontogenesis and form high-grade seeds. The highest productivity of raw material was fixed for varieties Virginia, Ternopolskii 7, Temp 321 and Berlei 38.