180 MINERAL SALTS ABSORPTION IN PLANTS 



Ulrich, a. (1941). Metabolism of non-volatile organic acids in excised barley 

 roots as related to cation-anion balance during salt accumulation. Amer. 

 Journ. Bot. 28, 526-37. (88, 91). 



UssiNG, H. H. (1949). Transport of ions across cellular membranes. Physiol. 

 Rev. 29, 127-55. (32). 



Vervelde, G. J. (1953). The Donnan-principle in the ionic relations of plant 



roots. Plant and Soil, 4, 309-22. (35). 

 ViETS, F. G. (1944). Calcium and other polyvalent cations as accelerators of 



ion accumulation by excised barley roots. Plant Physiol. 19, 466-80. (60; 



61, Fig. 20a). 

 Vlamis, J. and Davis, A. R. (1944). Effects of oxygen tension on certain 



physiological responses of rice, barley and tomato. Plant Physiol. 19, 33-51. 



(50; 51, Fig. 16a). 

 Vreugdenhil, D. (1957). On the influence of some environmental factors on 



the osmotic behaviour of isolated protoplasts of Allium cepa. Acta Bot. 



Need. 6, 472-542. (21). 

 Vries, H. de (1871). Sur la permeabilite du protoplasme des betteraves rouges. 



Arch. Need. 6, 117-26. (16, 22). 



Whaley, W. G., Mollenhauer, H. H., and Leech, J. H. (1960). The ultra- 

 structure of the meristematic cell. Amer. Journ. Bot. 4,1, 401-49. (106). 



White, P. R. (1954). The Cultivation of Animal and Plant Cells. Thames and 

 Hudson, London. (14). 



WiEBE, H. H. and Kramer, P. J. (1954). Translocation of radioactive isotopes 

 from various regions of roots of barley seedlings. Plant Physiol. 29, 342-48. 

 (Ill; 112, Tables). 



WiERSUM, L. K. (1948). Transfer of solutes across the young root. Rec. Trav. 

 Bot. Need. 41, 1-19. (119). 



Williams, R. F. (1948). The effect of phosphorus supply on the rates of intake 

 of phosphorus and nitrogen and upon certain aspects of phosphorus 

 metabolism in gramineous plants. Aust. Journ. Sci. Res. B.l, 333-61. 

 (126; 127, Fig. 43). 



WiKLANDER, L. (1958). The soil. Encycl. Plant Physiol. IV. 118-69. (139, 

 Table 14). 



Woodward, J. (1699). Thoughts and experiments on vegetation. Phil. Trans. 

 21, 382-98. (1, 2, Table 1). 



Wright, K. E. (1939). Transpiration and the absorption of mineral salts. 

 Plant Physiol. 14, 171-74. (116, Table 10). 



Zimmerman, M. H. (1960). Transport in the phloem. Ann. Rev. Plant Physiol. 

 11, 167-90. (133). 



