The Formation and Pathological Anatomy of Frost Rings in Conifers Injured by Late Frosts
Author: Arthur Stevens Rhoads
Publisher:
Published: 1923
Total Pages: 22
ISBN-13:
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Author: Arthur Stevens Rhoads
Publisher:
Published: 1923
Total Pages: 22
ISBN-13:
DOWNLOAD EBOOKAuthor: Arthur Stevens Rhoads
Publisher:
Published: 1923
Total Pages: 16
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DOWNLOAD EBOOKAuthor: United States. Department of Agriculture
Publisher:
Published: 1936
Total Pages: 392
ISBN-13:
DOWNLOAD EBOOKAuthor: Joshua John Skinner
Publisher:
Published: 1924
Total Pages: 902
ISBN-13:
DOWNLOAD EBOOKPp. 27.
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Publisher:
Published: 1917
Total Pages: 1116
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DOWNLOAD EBOOKAuthor: William Henry Chandler
Publisher:
Published: 1925
Total Pages: 804
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DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1924
Total Pages: 500
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Publisher:
Published: 1924
Total Pages: 502
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DOWNLOAD EBOOKAuthor: Philip R. Larson
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 737
ISBN-13: 3642784666
DOWNLOAD EBOOKThe cambium has been variously defined as follows: "The actively dividing layer of cells that lies between, and gives rise to, secondary xylem and phloem (vascular cambium)" (IAWA 1964); "A meristem with products of periclinal divisions commonly contributed in two directions and arranged in radial files. Term pre ferably applied only to the two lateral meristems, the vascular cambium and cork cambium, or phellogen" (Esau 1977); and, "Lateral meristem in vascular plants which produces secondary xylem, secondary phloem, and parenchyma, usually in radial rows; it consists of one layer of initials and their undifferentiated deriva tives" (Little and Jones 1980). Clearly, the cambium is a diverse and extensive meristem, and no one defini tion will encompass all manifestations of what anatomists consider cambium. Its diversity and extent are further exemplified by a single plant, such as a temperate zone tree, in which procambium is initiated in the embryo and perpetuated throughout every lateral, primary meristem before giving rise to cambium in the secondary body. The cambium thereafter performs its meristematic task of producing daughter cells that differentiate to specialized tissue systems. The cam bium, however, does not remain static. Its derivatives vary either in form, or TImc tion, or rate of production at different positions on the tree, with age of the tree, and with season of the year. Moreover, the cambium responds both to internal sig nals and to external stimuli such as environment or wounding.
Author:
Publisher:
Published: 1957
Total Pages: 192
ISBN-13:
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