. Plant anatomy from the standpoint of the development and functions of the tissues, and handbook of micro-technic. Plant anatomy. COURSE OF FOOD DISTRIBUTION 167 diameter of branches, trunk and roots; but by the beginning of summer, or even in May, much of the food is being stored in roots and trunks. By August growth has almost ceased in most woody plants, and the bulk of the food made thereafter is stored in branches, trunk, and roots for use during the winter to a certain extent, and for resumption of growth in the spring. In accordance with this the flow of the food would be up as well as
. Plant anatomy from the standpoint of the development and functions of the tissues, and handbook of micro-technic. Plant anatomy. COURSE OF FOOD DISTRIBUTION 167 diameter of branches, trunk and roots; but by the beginning of summer, or even in May, much of the food is being stored in roots and trunks. By August growth has almost ceased in most woody plants, and the bulk of the food made thereafter is stored in branches, trunk, and roots for use during the winter to a certain extent, and for resumption of growth in the spring. In accordance with this the flow of the food would be up as well as down in the first part of the period between the appearance and fall of leaves, and chiefly down for storage after the elongation of the branches and the growth of fruit has practically ceased. Most of the reserve food is stored in the roots and trunk, and in the spring the larger part must as- cend where growth and fruitage is going on in the crown, and where cambial activity is first awakened. The sieve tubes which are empty during the winter can be filled by these ascending currents, and in most instances the tracheal tubes are also pressed into service and carbohydrates, chiefly as sugar, and proteids and amides to a certain extent, are poured into, them from their place of storage in the xylem and phloem parenchyma and medullary Fig. 93.—Diagram showing how, in Indian corn, the food from the upper and lower leaves finds its way into the 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 Stevens, William Chase, 1861-. Philadelphia, P. Blakiston's Son
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