AN OCCURRENCE OF PERFORATED TRACHEIDS IN THUJA OCCIDENTALIS L.
نویسندگان
چکیده
منابع مشابه
Mechanisms of drought response in Thuja occidentalis L. II. Post-conditioning water stress and stress relief.
We examined the extent of osmotic adjustment and the changes in relative water content (RWC) and transpiration rate (i.e., relative stomatal function) that occur in water-deficit-conditioned 6-year-old Thuja occidentalis L. (eastern white cedar) trees in response to a severe drought. Trees conditioned by successive cycles of mild or moderate nonlethal water stress (conditioning) and nonconditio...
متن کاملMechanisms of drought response in Thuja occidentalis L. I. Water stress conditioning and osmotic adjustment.
We investigated the extent of osmotic adjustment and changes in transpiration rate that occur in response to repeated cycles of water deficit stress in 6-year-old Thuja occidentalis L. (eastern white cedar) trees. Groups of trees were water-stress conditioned by repeated exposure to predetermined thresholds of nonlethal water stress by withholding water until the predawn water potential fell to...
متن کاملCavitation Events in Thuja occidentalis L.? : Utrasonic Acoustic Emissions from the Sapwood Can Be Measured.
Ultrasonic acoustic emissions (AE) in the frequency range of 0.1 to 1 megahertz appear to originate in the sapwood of Thuja occidentalis L. The AE are vibrations of an impulsive nature. The vibrations can be transduced to a voltage waveform and amplified. The vibrations of each AE event begin at a large amplitude which decays over 20 to 100 microseconds. Strong circumstantial evidence indicates...
متن کاملEffects of Thuja Occidentalis as an alternative remedy in the treatment of Papillomatosis in Cattle
Papillomatosis is a condition in farm animals and is treated by surgical excision or application of certain caustic agents. Contrary to it, two cattle with teat warts were treated by an alternative method by using the thuja occidentalis (thuja-30, a homeopathic medicine) @ 10 drops Per os twice a day for a span of 3 weeks and lead to complete recovery.
متن کاملPharmacological Evaluation of Sedative activity of methanolic extract of Thuja occidentalis in mice.
The methanolic leaf extract of Thuja occidentalis was evaluated for possible sedative activities in mice. Sedative activity was evaluated by using hole cross, open field, thiopental sodium-induced sleeping time and elevated-plus maze (EPM) tests at 200mg/kg and 400 mg/kg. The extract decreased the locomotor activity of mice in hole cross, open field and EPM test and showed the remarka...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 1958
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.1958.tb05921.x