Lecture 2 — 47 — Micronutrient Elements 



Maze, P. Influences respectives des elements de la solution 



minerale sur le developpement du mais. Ann. Inst. Pasteur 



28: 21-68, 1914. 

 Reed, Howard S. Cytology of leaves affected with little leaf. 



American Journal of Botany 25: 174-186, 1938. 

 . Effects of zinc deficiency on cells of vegetative 



buds. American Journal of Botany 28: 10-17, 1941. 



and DUFRENOY, Jean. Catechol aggregates in the 



vacuoles of cells of zinc deficient plants. American Journal 



of Botany 29: 544-551, 1942. 

 Shive, John W. Significant roles of trace elements in the 



nutrition of plants. Plant Physiology 16: 435-445, 1941. 

 Skoog, Folke. Relationships between zinc and auxin in the 



gnfowth of higher plants. American Journal of Botany 27: 



939-951, 1940. 

 SoMMER, A. L. Copper as an essential for plant growth. Plant 



Physiology 6: 339-345, 1931. 

 and Lipman, C. B. Evidence on the indispensable 



nature of zinc and boron for higher green plants. Plant 



Physiology 1: 231-249, 1926. 

 Steinberg, Robert A. The essentiality of gallium to growth 



and reproduction of Aspergillus niger. Journal Agr. Res. 



57: 569-574, 1938. 

 Stout, P. R. and Arnon, D. I. Experimental methods for the 



study of the role of copper, manganese, and zinc in the 



nutrition of higher plants. American Journal of Botany 



26: 144-149, 1939. 

 Trelease, Sam F. and Martin, Alan L. Plants made poison- 

 ous by selenium absorbed from the soil. Botanical Review 



2: 373-396, 1936. 

 and Trelease, Helen M. Seleniimi as a stimulating 



and possibly essential element for indicator plants. Ameri- 

 can Journal of Botany 25 : 372-380, 1938. 

 Warington, Katherine. The effect of boric acid and borax on 



the broad bean and certain other plants. Annals of Botany 



37: 629-672, 1932. 



