. The cytoplasm of the plant cell. Plant cells and tissues; Protoplasm. Guilliermond - Atkinson — 106 Cytoplasm of granules, rods or chondrioconts, are able to change from one of these forms to the next, and are characterized by a number of well determined physical and chemical properties. The theory of the duality of the chondriosomes has been remarkably confirmed by a study of the life history of the chondriome throughout the plant kingdom and is particularly well supported by the investigations of Mangenot and Emberger. Development of chondriosomes and plastids among the plant groups:- Embe
. The cytoplasm of the plant cell. Plant cells and tissues; Protoplasm. Guilliermond - Atkinson — 106 Cytoplasm of granules, rods or chondrioconts, are able to change from one of these forms to the next, and are characterized by a number of well determined physical and chemical properties. The theory of the duality of the chondriosomes has been remarkably confirmed by a study of the life history of the chondriome throughout the plant kingdom and is particularly well supported by the investigations of Mangenot and Emberger. Development of chondriosomes and plastids among the plant groups:- Emberger (1920-23), in investigating the pteridophytes (Figs. 71-74), found that the egg cell in the ferns contains a chon- driome exactly like that in the animal cells, in which chondriome it is not possible to distinguish the plastids from other chondriosomes. However, in those prothallial cells from which the egg cell is de- rived there are both large chloroplasts and small chondriosomes. As these cells differentiate in the course of the formation of the egg, Emberger has shown that their chloroplasts lose chlorophyll and. miH' © [0 d. 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 Guilliermond, Alexandre, 1876-; Atkinson, Lenette May Rogers, 1899-. Waltham, Mass. , Chronica Botanica Company
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