A GKNETICO-PHYSIOLOGICAL STUDY ON THE NOBMATICN ETC. 73 



Also, in the seecl coat of Pkisedm vulgaris, Phaseolus ranUißorvs^ Pisum 

 sativum-, Viyna nngtiimlia and Vigtm sinensis^, the C(.>loured types which nre 

 duo to anthocyauin pigments are doiaiuaut over those which ai'o duo fcj 

 phlobapheue pigments and the latter are dominant over white types. In 

 Pisum, the well known work of Mendel lias already shown that the brown 

 coloured pja is a simple dominant over the colourless one. Lock enumerated 

 the genes concerning the colom- of the testa as follows ; (1) greyish or brownish 

 pigmentation as opposed to the absent (white) (C) (c), (2) purple spotted of 

 bright pm-ple spots as opposed to very faint or absence of the character (S) 

 (s), (3) the presence of maple character. Mapliug or mottling of a rich brown 

 coloiu' as opposed to the absence of the character (31) (m). 



1. Lock. K. H., SUidies in Plant Breeding in tlie Tropics. Ann. Koy. Bot. Giinl. Peradcniya. 

 3 : 95, 190G, Shcll, G. H., Some Latent Characters in White Bean. Science. N. S. 25 : 828, 1907. 

 — Shtll. X yevr Mendelian Eatio and Several Types o£ Latency. .\mer. Xat. 42 : 433, 1908. — 

 TscHEEMAK, V. E., Weitere Beitrüge ueber Verschieilenwertigkeit der ilerkmarle bei Kreuzung von 

 Erbsen n. Bohnen. Zeit f. d. 1. Versuch. Osterreich, 1901, 641.— Tschekmak, Weitere Kreiitzim.2;s- 

 stndien an Erbsen, Levkojen und Bohnen. Ibid. 1904, 533. — ^Tschermak, Bastardiemngsversuche 

 an Levokojen, Erbsen, \md Bohnen mit Rücksicht auf der Faktorenlehre. Zeit.f. induk. u. Vererb. 

 7 : 81. 1912. Emebsos, 1'. X.. Inheritane« of Color in the Seeds of the Common Bean. ".Phaseolus 

 \-xilgaris. Ann. Beix)rt iSebraska Exp. Station 22 ; G7, 1909.— Lcs-dbeeo, J. and Akermav, A , The 

 Colour of the Seed in the Descend.ints of \ Natural Hybrid of Two Varieties o£ Phaseolus 

 vulgaries. Sveriges Utsadesforeinge Tidskrift. 27 : 115, 1917. (cited in Intermit. Eeview of Sc. and 

 Pract. of Agric. 8 : Entry 1013, 1917.) 



2. Lock, K. H., The Present Stage of Knjwledge of Hereility in Pisum. .4nn. Eoy. Bot. 

 Peradeniya. 4 : 93, 1908. Mesdel. (.i.. Versuche imler Pflanzenhybriden. Verband. Naturforsch. 

 Verein in Briinn. 10 : 1865. — White, O. F., Researches on the 35 Factors Determining the various 

 Characters of the Genus Pisum, Jour. Agric. Research. 11 : 166, 1917. 



3. Spillman, W. J., Inheritance of the •' Eye " in Vigna. Amer. Nat 45 : 513. 1911.— SpxiJ/- 

 MAN-, Color Correlation in Cowi)ejis. Science N. S. 38 : 302, 1913. — Harlaxd, S. C, Inheritance of 

 certain characters in the Cowpaa (Vigna Sinensis)- Jour. Genet. 8 . 101, 1919. 



