1 64 EIGSTI 



Clausen, R. 1945. Mosaic resistance transferred from wild tobacco to cultivated 

 varieties through the science of genetics. Cahfornia Agric. 3(7) :7, 16. 



Cook, J., and J. Loudon. 1951. Alkaloids: Colchicine. Ed. by Holmes and Manske. 

 Vol. 2, pp. 261-325. Academic Press. New York. 



Darrow, G. 1950. Polyploidy in fruit improvement. Sci. Monthly 70:211-219. 



Dermen, H. 1940. Colchicine, polyploidy and technique. Bot. Rev. 6:599-635. 



. 1952. Polyploidy in the apple. Jour. Hered. 43:7-8. 



DusTiN, A. 1934. Contribution a I'etude des poisons caryoclasiques sur les tumeurs 

 animales. Bull. Acad. Roy. Med. Belg. 14:487-502. 



, L. Havas, and F. Lits. 1937. Action de la colchicine sur les divisions 



cellulaires chez les vegetaux. C. R. Assoc, des Anat. 32:170-176. 



EiGSTi, O. 1938. A cytological study of colchicine effects in the induction of poly- 

 ploidy in plants. Proc. Nat. Acad. Sci. (U.S.) 24:56-63. 



and p. Dustin. 1947. Colchicine bibliography. Lloydia 10:65-114. 



and . 1949. Colchicine bibhography. Lloydia 12:185-207. 



and . 1955. Colchicine in agriculture, medicine, biology and chem- 

 istry. 470 pp. Iowa State College Press. Ames, Iowa. 



AND B. Tenney. 1942. Colchicine — a report on experiments. 40 pp. Univ. 



Okla. Press. Norman, Okla. 

 Emsweller, S. 1949. Polyploidy in Liliiim longiflorum. Amer. Jour. Bot. 36:135- 



144. 

 Frandsen, K. 1947. The experimental formation of Brassica napus L. var. oleifera 



DC. and Brassica cammta Braun. Dansk. Bot. Ark. 12:1-16. 

 Gavaudan, p., and N. Pomriaskinsky-Kobozieff. 1937. Sur I'influence de la 



colchicine sur la caryocinese dans les meristemes radiculares de I' Allium cepa. 



C. R. Soc. Biol. Paris 125:705-707. 

 Havas, L. 1940. Colchicine chronology. Jour. Hered. 31:115-117. 

 JosEFSSON, A. 1953. Tetraploida rovor, foradling och Forsok vid Sveriges Utsades- 



forening. Sveriges Utsadesf. Tidskr. 3:165-180. 

 Kamenoto, K. 1952. Further studies on polyploid Cattleyas. Bull. Pac. Orchid Soc. 



Hawaii 10:141-148. 

 KiHARA, H. 1952. Triploid watermelons. Proc. Amer. Soc. Hort. Sci. 58:217-230. 



AND F. Lilienfeld. 1949. A new synthesized 6X wheat. Hereditas Suppl. 



Vol.: 307-319. 



AND I. NiSHiYAMA. 1947. An application of sterility of autoploids to the 



breeding of seedless watermelons. Kihara Inst. Biol. Res. Seiken Ziho 3:92-103. 



AND K. Yamashita. 1947. A preliminary investigation for the formation of 



tetraploid watermelons. Kihara Inst. Biol. Res. Seiken Ziho 3:89-92. 

 Krythe, J., AND S. Wellensiek. 1942. Five years of colchicine research. BibHog. 



Genetica 14:1-132. 

 Levan, a. 1938. Effect of colchicine on root mitosis in Allium. Hereditas 24:471-486. 

 . 1945. Polyploidiforadlingens Nurvarande Lage. Sveriges Utsadesf. Tidskr. 



1945:109-143. 

 Loudon, J. 1955. Chapter 6 in Colchicine, ed. by Eigsti and Dustin (1955). Iowa 



State College Press. Ames, Iowa. 

 LuDFORD, R. 1936. The action of toxic substances upon the division of normal and 



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