Ekologiczna promienioczułość Lemna minor L. i Spirodela polyrrhiza (L.) Schleiden [Ecological radiosensivity of Lemna minor L. and Spirodela polyrrhiza (L.) Schleiden]
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چکیده
منابع مشابه
Interactions between Chromium and Plant Growth Regulators on the Growth of Spirodela polyrrhiza (L.) Schleiden
Chromium is one of the most toxic heavy metals which reduces the growth of plants at relatively low concentrations, whereas IAA, kinetin, GA3 and 24-epibrassinolide (24-epiBr) are well known plant growth regulators (PGRs) which enhance the growth of plants. The present study was undertaken to determine the effect of binary combinations of Cr(VI) and PGRs on Spirodela polyrrhiza (L.) Schleiden, ...
متن کاملThe abscisic acid induction of a novel peroxidase is antagonized by cytokinin in Spirodela polyrrhiza L.
The growth regulator abscisic acid (ABA) can be used to induce dormant bud structures (turions) in the duckweed Spirodela polyrrhiza L. In this paper we show that during this process, ABA rapidly induces elevated levels of mRNA transcripts encoding a novel basic peroxidase. In addition, we show that in the presence of the cytokinin kinetin the maintained increase is attenuated. Kinetin not only...
متن کاملEffect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid.
To elucidate effect of chemical reagents addition on growth of aquatic plants in restoration of aquatic ecosystem, Spirodela polyrrhiza (L.) Schleid was used to evaluate its physiological responses to excess iron (Fe(3+)) and copper (Cu(2+)) in the study. Results showed that accumulation of iron and copper both reached maximum at 100 mg L(-1) iron or copper after 24 h short-term stress, but exc...
متن کاملTitration of Isolated Cell Walls of Lemna minor L.
A theoretical model has been built to bypass the equation of titration of the cell wall. This equation, which is an extension of the Henderson-Hasselbach equation, underlines the importance of the exchange constant, the ionic strength as well as the rate of neutralization. The model is restricted to the case when the ionization degree is equal to the neutralization degree. The shape of the titr...
متن کاملExchange Properties of Isolated Cell Walls of Lemna minor L.
From our theoretical treatment which is an extension of the classical Donnan theory, we have estimated the rational selectivity coefficients of the carboxylic groups of the walls during exchanges of divalent ions against monovalent ones (i.e. calcium and potassium or calcium and sodium ions). These coefficients express the interactions between the different ions, those between the counter-ions ...
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ژورنال
عنوان ژورنال: Monographiae Botanicae
سال: 2017
ISSN: 2392-2923,0077-0655
DOI: 10.5586/mb.1977.005