. Advanced biology. Biology; Physiology; Reproduction. Layering is a modification of cutting. It consists in bending down a stem and covering it with earth. Deep- notching or ringing the bark of the part buried usually hastens the rooting of the stem. part of the organism may be grafted on to the diseased bone. But, to a large extent, grafting of tissues, bones, and even organs is still in an experimental stage and has not proven suc- cessful in all instances. Natural methods of vegetative propagation. Layering, another method of propagation, often occurs without the assistance of man. In many
. Advanced biology. Biology; Physiology; Reproduction. Layering is a modification of cutting. It consists in bending down a stem and covering it with earth. Deep- notching or ringing the bark of the part buried usually hastens the rooting of the stem. part of the organism may be grafted on to the diseased bone. But, to a large extent, grafting of tissues, bones, and even organs is still in an experimental stage and has not proven suc- cessful in all instances. Natural methods of vegetative propagation. Layering, another method of propagation, often occurs without the assistance of man. In many cases the branches of a tree or brush mav bend down until thev come in contact with the soil. Sometimes thev become covered with soil. If there is sufficient w^armth and moisture in the soil, the branches will develop roots. Frequently, after developing roots, they break off from the tree and form an entirely new plant. The raspberry, with its arching stems, illustrates this type of propagation. Runners are branches that trail along the ground. Sometimes, the ends or joints of these branches come in direct contact wdth moist soil. Roots and, finally, a shoot develop at this point, forming a new plant. Strawberries, as t^unnen. parent. plccrLt> yoxznS -plcCT>^ When runners are found in plants, they may be used as an easy and rapid method of 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 Wheat, Frank Merrill; Fitzpatrick, Elizabeth T. New York ; Boston [etc. ] : American Book Company
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Keywords: ., bookcentury1900, bookdecade1920, booksubje, booksubjectphysiology
