Abstract
IF 25–30 gm. of mature leaves of the cotton plant are rolled up, wrapped in cloth, the wad placed between two disks about 2 in. in diameter and the whole put in the jaws of a small vice, sap is expressed on the application of pressure. As the sap flows out of the wad, much of the leaf is squeezed out from between the disks. To obtain more aap, the tissue must be collected into a ball and again wrapped up in the cloth. On the application of pressure, sap is again expressed. This process can be repeated three or four times ; but a point is reached when even under the greatest pressures that can be obtained in the vice, the yield of sap amounts to only a few drops. If now the residue from which sap has been expressed is frozen at -16 ° C. and then thawed, much more sap can be obtained on the application of very small pressures.
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References
Dixon, H. H., and Atkins, W. R. G., Proc. Roy. Soc. Dub., 13, 422 (1913).
Walter, H., Ber. deut. bot. Ges., 46, 539 (1938).
Scarth, G. W., and Levitt, J., Plant Physiol., 12, 51 (1937).
Stiles, W., “Introduction to Principles of Plant Physiology”. (London, 1936).
Jordan, Lloyd D., and Moran, T., NATURE, 132, 515 (1933).
Iljin, W. S., Bull, de l'assoc. Russe pour les recherches scientifiques à Prague, 1 (VI). Sec. des sciences naturalles et mathématiques, No. 4 (1934).
Lepeschkin, W. W., Biodynamica, 19 (1936).
Mason, T. G., and Phillis, E., Bot. Rev., 3, 47 (1937).
Audus, L. J., New Phyt., 34, 386 (1935).
Sayre, J. D., and Morris, V. H., Plant Physiol., 7, 261 (1932).
Chibnall, A. C., J. Biol. Chem., 55, 333 (1923).
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Phillis, E., Mason, T. Concentration of Solutes in Vacuolar and Cytoplasmic Saps. Nature 140, 370–372 (1937). https://doi.org/10.1038/140370b0
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DOI: https://doi.org/10.1038/140370b0
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