بررسی اثر تراکم بوته بر خصوصیات مورفولوژیکی چند واریته توتون تیپ هواخشک

Desrable plant density improve the quantities and qualitative characteristics of tobacco and increase quantity yield. Also ecological and agronomical requirement such as plant density, fertilizer rates and better time of transplanting should be identified. In order to evaluate qualitative and quantitative yield and choose one or several suitable varieties, this study carried out in RCBD from on split plot. Main plots allocated four varieties (HB39P, KY907.HB4105P and Burley21) and subplots were Distance transplanting (40×100,50×100 and 60×100)cm with three replication during (2010-2011) in urmia tobacco research center. The combined data analysis showed that the effect of plant density (B) on characters such as middle leaf length, plant height, was significant 5% level. Between years and also in different varieties (A) on characteristics such as middle leaf length, plant height was significant. However in some characteristics such as green leaf weight , dry leaf weight in each plant and one was so significant. The results of mean comparisons showed that male sterile varieties in comparison to burley 21 preferred in morphological characteristics .