. The biology of flowering plants. Phanerogams; Plant physiology; Plant ecology; Plant Physiology. A B -Starch content of guard cells oi Fouquieria splendens ; A, starch abundant; B, starch almost absent. (After Lloyd.) supposed to be due to its effect on photosynthesis. The guard cells contain chlorophyll ; in light they should accumulate carbohydrates with a consequent increase in osmotic pressure, giving the condition favourable to open- ing. This, however, is not the case. Lloyd (1908), Loftfield (1921), and Iljin (1915) have found that the open- ing in light is accompanied by a gr
. The biology of flowering plants. Phanerogams; Plant physiology; Plant ecology; Plant Physiology. A B -Starch content of guard cells oi Fouquieria splendens ; A, starch abundant; B, starch almost absent. (After Lloyd.) supposed to be due to its effect on photosynthesis. The guard cells contain chlorophyll ; in light they should accumulate carbohydrates with a consequent increase in osmotic pressure, giving the condition favourable to open- ing. This, however, is not the case. Lloyd (1908), Loftfield (1921), and Iljin (1915) have found that the open- ing in light is accompanied by a great decrease in the amount of starch in the guard cells ; as the stomata close in the dark the starch is reformed (cp. Fig. 10). This is, of course, not the behaviour of the ordinary assimilating cell. Cases have been observed, by Ursprung (1917), where intense in- solation has led to disappearance of starch ; but, normally,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Skene, Macgregor. New York, The Macmillan Company
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Keywords: ., book, bookcentury1900, bookdecade1920, booksubjectplantphysiology
