. A textbook of botany for colleges and universities ... Botany. 524 ECOLOGY velopment; in any event, green plants may become variegated by grafting. The boundaries of the white spots usually are veins, which perhaps act as barriers to the virus. White spots exposed for a time to darkness and then to light become green, as though the virus were destroyed by darkness. In some plants (fig. 757), but not in all, the albescent leaves or parts of leaves are smaller than those that are green, indicating defective food migration from other parts. The movements of chloroplasts. — In diffuse light, pla
. A textbook of botany for colleges and universities ... Botany. 524 ECOLOGY velopment; in any event, green plants may become variegated by grafting. The boundaries of the white spots usually are veins, which perhaps act as barriers to the virus. White spots exposed for a time to darkness and then to light become green, as though the virus were destroyed by darkness. In some plants (fig. 757), but not in all, the albescent leaves or parts of leaves are smaller than those that are green, indicating defective food migration from other parts. The movements of chloroplasts. — In diffuse light, plastids commonly are close to the outer cell walls, and so arranged as to expose a maxi- mum surface to the light {epislrophe,iLg. j^S). When exposed for a time to in- tense light, the plastids for the most part move to the side or rear walls, to which they are closely appressed,. 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 Coulter, John Merle, 1851-1928; Barnes, Charles Reid, 1858-1910, joint author; Cowles, Henry Chandler, 1869- joint author. New York, Cincinnati [etc] American book company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
