EFFECT OF LIGHT ON GERMINATION OF SEEDS 99 



visible spectrum promoting the germination of light-sensitive lettuce seed. 



Smithsonian Inst. Pubis. Misc. Collections, 96, 1-8. 

 Parker, M. W., S. B. Hendricks, H. A. Borthwick, and N. J. Scully. 1946. 



Action spectrum for the photoperiodic control of floral initiation of short-day 



plants. Botan. Gaz., 108, 1-26. 

 Toole, E. H., H. A. Borthwick, S. B. Hendricks, and Vivian K. Toole. 1953. 



Physiological studies of the effects of light and temperature on seed germina- 

 tion. Proc. Intern. Seed Testing Assoc, 18 (2), 267-76. 

 Toole, E. H., S. B. Hendricks, H. A. Borthwick, and Vivian K. Toole. 1956. 



Physiology of seed germination. Ann. Rev. Plant Physiol., 7, 299-324. 

 Toole, E. H., A. G. Snow, Jr., V. K. Toole, and H. A. Borthwick. 1956. 



Effects of light and temperature on germination of Virginia pine seeds. Plant 



Physiol., 31 (Suppl.), xxxvi (Abstract). 

 Toole, E. H., V. K. Toole, H. A. Borthwick, and S. B. Hendricks. 1955a. 



Photocontrol of Lepidiiim seed germination. Plant Physiol., 30, 15-21. 

 Toole, E. H., V. K. Toole, H. A. Borthwick, and S. B. Hendricks. 1955b. 



Interaction of temperature and light in germination of seeds. Plant Physiol, 



30, 473-78. 

 Toole, E. H., V. K. Toole, S. B. Hendricks, and H. A. Borthwick. 1957. Effect 



of temperature on germination of light-sensitive seeds. Proc. Intern. Seed 



Testing Assoc, 22 ( 1 ) , 196-204. 



