Photosynthetic Characteristics of Transformed Tobacco Plants Grown in Vitro after Their Transplantation in Natural Conditions
نویسندگان
چکیده
The rate of photosynthesis and changes in chlorophyll fluorescence parameters of transformed tobacco plants grown in vitro and after their transplantation in natural conditions were studied. It was found that in vitro conditions limited photosynthetic incorporation of CO2 in the leaves of transformants probably because of restricted gas exchange in the vials. In vitro conditions also caused lower photochemical effectiveness (lower Fv, and Fv/Fm ratio). However, after transplanting the transformed tobacco plants and their acclimation to natural conditions the parameters investigated reached normal values. These results show that the genetic transformation had not influence the photosynthetic characteristics of tobacco line CMS/81 as well as its acclimation ability.
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