Archive image from page 484 of Cyclopedia of American horticulture, comprising. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches cyclopediaofamer04bail4 Year: 1900 VARIEGATION VASES 1903 vigor of the plants are reduced as a result. It is further evident that the initial causes of variegation may be quite diverse, some of the most iisual being seed of low vitality; unsuita
Archive image from page 484 of Cyclopedia of American horticulture, comprising. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches cyclopediaofamer04bail4 Year: 1900 VARIEGATION VASES 1903 vigor of the plants are reduced as a result. It is further evident that the initial causes of variegation may be quite diverse, some of the most iisual being seed of low vitality; unsuitable nourislimeut, especially a lack of elaborated nitrogen ; rapid growth in very moist soil; severe injury to the roots during a period of rapid growth of the iipper parts of the plant; severe cutting back, etc. Though started at first through the infliience of envi- ronment, variegation, when of value horticulturally, has in many cases been increased and fixed by selection till it has become almost a specific character in some groups of plants, Antmunal Coloration,—A word might be said in this connection regarding autumnal coloration. The produc- tion of color in autumn foliage is, as is well known, due in part to the gradual destruction of the chlorophyll when the leaves have reached maturity and approach the period of death, and in part to the action of acids on anthocyaniu as described below. Many of the de- structive changes which take place in the chlorophyll are oxidation processes, the same as occur in the cells of highly colored variegated plants, and physio- logically they are not very dift'ereut from the changes occurring in Calathea, Caladiura, Codiieura, etc. The approach of maturity in the leaf, and the coming on of cool weather in autumn, stimulates the production of oxidizing ferments, and the action of these and the acids of the cell-sap upon the chromogen, or color con- tents of the leaves, especially the chlorophyll and anthocyaniu, causes many of the bril
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Keywords: 1900, archive, bailey_l_h_liberty_hyde_1858_1954_ed, book, bookauthor, bookdecade, bookpublisher, booksponsor, booksubject, bookyear, boston_library_consortium_member_libraries, drawing, gardening, historical, history, illustration, image, miller_wilhelm_b_1869_joint_author, new_york_etc_the_macmillan_company, page, picture, print, reference, vintage, zimmermann_a_albrecht_b_1860
