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Pagina 106
In many processes the phase is determined, for rhythms both in light and in
darkness, by the time light or darkness respectively begin. An excellent example
of this is to be found in the rhythm of C02 output in succulent plants.<161- 162>
The ...
In many processes the phase is determined, for rhythms both in light and in
darkness, by the time light or darkness respectively begin. An excellent example
of this is to be found in the rhythm of C02 output in succulent plants.<161- 162>
The ...
Pagina 125
Although, as we have seen, there is strong evidence that closure can occur in the
absence of oxygen, there is other evidence that, under some circumstances,
prolonged lack of oxygen can lead to opening in darkness. This was first
observed ...
Although, as we have seen, there is strong evidence that closure can occur in the
absence of oxygen, there is other evidence that, under some circumstances,
prolonged lack of oxygen can lead to opening in darkness. This was first
observed ...
Pagina 129
6.2). The recognition of the C02-dependent and -independent effects of light in
producing opening (see p. 77) offered a possible explanation of time (min) Fig.
6.2 Continuous record of closing in darkness in Xanthium pennsylvanicum,
showing ...
6.2). The recognition of the C02-dependent and -independent effects of light in
producing opening (see p. 77) offered a possible explanation of time (min) Fig.
6.2 Continuous record of closing in darkness in Xanthium pennsylvanicum,
showing ...
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Inhoudsopgave
Chapter Morphology and Physiology of Stomatal Cells | 1 |
The Measurement of Stomatal Aperture | 26 |
The Theory of Diffusion Through Stomata | 49 |
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Veelvoorkomende woorden en zinsdelen
acid air space system blue light C02 concentration C02-compensation point C02-free air carbon dioxide cent changes in stomatal chlorophyll chloroplasts clamp cobalt chloride paper darkness density diameter diffusion path diffusive flow effective length elliptical energy epidermal cells epidermal strips evidence glycollate graminaceous guard cells guard-cell Heath hydrogen hydrolysis illumination leaf leaf discs leaves light intensity mannitol manometer measured Meidner mesophyll metabolic night opening normal number of stomata observations occur onion opening and closing oxygen permeability photophosphorylation photosynthesis plants plasmolysed porometer porometer cup pressure rate of diffusion rate of photosynthesis reaction reduced resistance to diffusion solution starch starch content stoma mother cell stomatal aperture stomatal apparatus stomatal behaviour stomatal control stomatal mechanism stomatal movements stomatal opening stomatal pores stomatal resistance stomatal tube subsidiary cells tissue turgor uptake ventral walls Vicia faba viscous flow porometer washers water deficit water vapour Wheatstone bridge Xanthium pennsylvanicum