Potassium is one of the most important elements for crop growth and development. However, potassium deficiencies are common in cultivated land oil crops world, which limits increase their yields. The photosynthesis, fluorescence, physiological indexes peanut plants were affected by low K stress to varying degrees, finally yield decreased. effect on photosynthetic mechanism remains unclear. In t...

Species-specific vocalizations in mice have frequency-modulated (FM) components slower than the lower limit of FM direction selectivity in the core region of the mouse auditory cortex. To identify cortical areas selective to slow frequency modulation, we investigated tonal responses in the mouse auditory cortex using transcranial flavoprotein fluorescence imaging. For differentiating responses ...

Salinity is one of major stresses which can severely limit plant production, especially in the arid and semi-arid regions. The present study was carried out to evaluate the impact of salinity stress on some physio-biochemical parameters in nitre bush plants (Nitraria schoberi). Thus, an experiment was carried out under natural conditions and salinity stress was induced by a combination of diffe...

The study of chlorophyll fluorescence (CF) parameters i.e.: Fo, Fm, Fv/Fm, Y, qP, qN, F’o, F’m was conducted in two strawberry cultivars ‘Honeoye’ and ‘Teresa’. Measurements of their values were done twice: in an early autumn and late spring. Fluorescence of five dark-adapted mature leaves derived from each cultivar was measured in the laboratory at room temperature with the use of a portable p...

This study explores costs of mouth brooding and the response of parent and offspring to brooding under hypoxia in the maternal African mouth brooder Pseudocrenilabrus multicolor. Fish of swamp origin were acclimated to hypoxia (1.42 mg oxygen L(-1)) or normoxia (8.00 mg oxygen L(-1)) for a minimum of 6 months prior to measures of metabolic rate and embryo traits. Regardless of brooding stage, s...

The C3 plants are frequently suffering from exposure to high temperature stress which limits the growth and yield of these plants. This study seeks to clarify the physiological mechanisms of heat tolerance in relation to oxidative stress in C3 species. Fifteen C3 species were exposed to prolonged moderately high temperature stress 36/30°C for 40 days in a growth chamber. Chlorophyll fluorescenc...