190 S. KLEIN 



a very delicately balanced equilibrium between growth sub- 

 stances and their specific inhibitors. This too will be discussed 

 separately. Incomplete as this resume is, I hope it still shows 

 that dormancy in seeds cannot possibly be dependent on one or 

 a few substances only, or on one mechanism only, but that it is 

 a state dependent on a large number of systems, which we are 

 still unable to comprehend fully. 



REFERENCES 



1 D. KOLLER, Bull. Research Council Israel, 5D (1955) 58. 

 " H. A. BoRTHwicK, S. B. Hendricks, M. W. Parker, E. M. Toole and 

 V. K. Toole, Proc. Natl. Acad. Sci., Washington, 38 (1952) 662. 



3 M. Evenari, Symp. Soc. Exptl. Biol., II (1957) 21. 



4 S. Klein, Ph. D. Thesis, Hebrew University, Jerusalem, 1956. 



•5 N. C. Thornton, Contrihs. Boyce Thompson Inst., 8 (1936) 24. 



* W. Crocker and L. V. Barton, Chronica Botan. Camp. Waltham, Mass., 



1953. 

 ' H. E. TooLE, S. B. Hendricks, H. A. Borthwick and V. K. Toole, Ann. 



Rev. Plant Physiol., 7 (1956) 299. 

 8 M. Evenari, Botan. Rev., 15 (1949) 153. 

 ^ H. R. Lerner, a. M. Mayer and M. Evenari, Physiol. Plantarum, 12 



(1959) 245. 

 ^0 M. Evenari, Encyclopedia of Plant Physiology, in press. 

 11 H. A. Borthwick and W. W. Robbins, Hilgardia, 3 (1928) 275. 

 1- M. Evenari, Radiation Biology, Vol. 3, (Ed. A. Hollaender), McGraw 



Hill Comp., New York, 1956, p. 518. 

 1^ M, Evenari and G. Neumann, Bull. Research Council Israel, 3 (1953) 136. 

 1-^ A. Kadman-Zahavi, Bull. Research Council Israel, 4 (1955) 370. 



15 A. Kadman-Zahavi, Ph. D. Thesis, Hebrew University, Jerusalem, 1959. 



16 G. E. Nutile, Plant Physiol., 20 (1945) 433. 



1" W. L. Butler, K. M. Morris, H. W. Siegelman and S. B. Hendricks, 



Proc. Natl. Acad. Sci., Washington, 45 (1959) 1703. 

 1^ M. Evenari and G. Neumann, Palestine, J. Botany, Jerusalem Ser. 6 



(1953) 96. 

 19 W. O. James, Plant Respiration, Clarendon Press, Oxford, 1953. 

 ^0 S. Klein and J. Preiss, Plant Physiol., 33 (1958) 321. 

 21 J. Preiss and S. Klein, Plant Physiol., 33 (1958) 326. 

 •" D. KoLLER, Ecology, 40 (1956) 20. 

 -3 H. Ikuma and K. V. Thiman, Science, 130 (1959) 568. 



