Agriculture Reference
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Fig. 24.4. Action potentials in soybean induced by irradiation at 470 nm in direction B as
shown in Fig. 24.1. The irradiance was 8.5 µE
m 2 s. The distance between electrodes was
5 cm. The soil was preliminarily treated with water every day. The volume of soil was 0.5 L.
The frequency of scanning was 50,000 samples/s.
/
period. The fiber cannot transmit a second impulse during the refractory
period. The integral organism of a plant can be maintained and developed
in a continuously varying environment only if all cells, tissues, and organs
function in concordance (Volkov et al. 2002).
These propagating excitations are theoretically modeled as traveling
wave solutions of certain parameter-dependant nonlinear reaction-diffu-
sion equations coupled with some nonlinear ordinary differential equa-
tions.Thesetravelingwavesolutionscanbeclassifiedassingleandmulti-
ple loop pulses, front and back waves, or periodic waves of different wave
speed. This classification is matched by the classification of the electro-
chemical responses observed in plants. The experimental observations also
show that under the influence of various pathogens, the shapes and speeds
 
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