The effect of water stress and defoliation on some of quantitative and quanlitiveof )Teuciumpolium(in Iranshahr
Subject Areas :
najmeh Safari
1
,
ahmad Mehraban
2
,
khaled miri
3
1 - Department of Agronomy, Faculty of Agriculture, Islamic Azad University Zahedan Branch, Zahedan, Iran.
2 - Department of Agronomy, Faculty of Agriculture, Islamic Azad University Zahedan Branch, Zahedan, Iran
3 - Faculty of Agriculture and natural resource research and education center of Baluchistan, Zahedan, Iran.
Keywords: Drought stress, defoliation, Teucriumpolium,
Abstract :
In order to investigate the effect of different levels of water and defoliation on some quantitative and qualitative characteristics of medicinal plant Teucriumpolium (Calpoureh). An experiment was Factorial shame in completely design conducted at the center for Agricultural Research in Iranshahr city came in to force in autumn 2014. Treatment were combination of water stress on four levels (A1= -0.3, A2= -5, A3= -10, A4= -15 bar) and defoliation stress on three levels (B1= 0 , B2 =25 , B3 =50 perecent defoliation). The levels of water shortage as main treatment and defoliation levels were considered as sub-plots. For imposing drought levels, First, by using pressure plats method , and soil moisture content were determined various potential water and then weighed average soil and added water loss. Traits in this project were: SPAD ridings, Stomatal resistance, Canopy temperature, Leaf to steam ratio, Specific leaf weight, Percentage of dry leaves and root / shoot ratio were measured. The results showed that water stress canopy temperature and percentage of dry leaf in Teucriumpolium significantly. Defoliation stress also reduced SPAD readings in Teucriumpolium. Significant negative correlation was between leaf / stem ratio and different levels of water stress in the plant. Also, root / shoot ratio showed appositive correlation with different levels of water stress. With the increase of water stress and defoliation stress, quality characteristics (oil) Teucriumpolium was decreased. In generality can be said, Teucriumpolium the plants are sensitive to two stresses.
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