. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. GERMINATION. HI GERMINATION. 608. Definition. The recommencement of growth in the seed is called germination. It is the awakening of the embryo from its tor- por, and the beginning of development in its parts already formed, so as to become a plant like its 471 4TS 472 471 Gormination of the Beach-nut, 470, Cross-section, showing the folded cotyledons. 471, The radicle '472, The ascending axis, above c, appear
. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. GERMINATION. HI GERMINATION. 608. Definition. The recommencement of growth in the seed is called germination. It is the awakening of the embryo from its tor- por, and the beginning of development in its parts already formed, so as to become a plant like its 471 4TS 472 471 Gormination of the Beach-nut, 470, Cross-section, showing the folded cotyledons. 471, The radicle '472, The ascending axis, above c, appears. 473, The cotyledons expand into the primordial leaves. 474, The first true leaves. G09. Experiment. All the stages of this interesting process may be conveni- ently observed, at any season, by an experiment. Let a few seeds, as of flax, cotton, wheat, pea, be enveloped in a lock of cotton resting upon water in a bulb- glass, and kept constantly at a proper temperature. Or, in spring, the garden soil will give us examples of all kinds everywhere. 610. That the seed may begin to grow, or germinate, it is first planted, or, at least, placed in contact with warm, moist soil. Con- cerning the proper depth of the planted seed agriculturalists are not agreed; but nature seems to indicate that no covering is needed beyond what will secure the requisite moisture and shade. 611. The process commenced. Thus situated the integuments gradually absorb water, soften and expand. The insoluble, starchy matter deposited in the cotyledons, or in the albumen, or in both, un- dergoes a certain chemical change, becoming sweet and soluble, capable of affording nourishment to the embryo now beginning to dilate and develop its parts. First (in the winged seed of the maple, scattered everywhere) the radicle is seen protruding from the micropyle, or the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearanc
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