October, 1918.] 



ON THE XENIA IN THE BARLEY. 



213 



Experiment X. 



„ [ Blue trrained " Rokkaku-chevalier ' 



Parents : { 



I Whitish yellow grained " Goldenmelon " 



" Goldenmelon " x "Rokkaku-chevalier" 



Individual 

 number 



Number 



of ears 



examined 



Blue grains 



Whitish 

 yellow 

 grains 



T.g. 



Deviation 



Probable 

 error 



D./P.E. 



1 



4 



12 



15 



4 



4 

 9 

 2 



100 

 85 



191 

 48 



31 

 34 

 82 

 14 



131 



119 



273 



62 



±2.50 



±4.25 



±13.75 



±1.50 



±4.96 

 ±4.72 

 ±7.16 

 ±3.41 



0.50 



o.90 

 1.92 

 0.44 



Total 

 observed 

 Expected 



Ji 



424 



438.75 



161 



146.25 



585 

 5S5 



±14.75 



± 10.47 



1.41 



If these results indicated above are totalized, the numbers are : 



Bine grains Yellow grains Total grains D. P.E. D./P.E. 



Observed 7498 2504 10002 ±3.50 ±43.31 0.08 



Expected 7501.5 2500.5 10002 



As was shown above, the segregation of two sorts of grains was 

 almost three to one in every cross. It seems, therefore, that about 

 half of the whitish yellow grains classified under this class by Miya- 

 ZAWA were, in fnct, dilute blue, but owing to the dilution of the anto- 

 cyanic pigment this was overlooked and miselassilied under the class of 

 whitish yellow. Actually there was observed some degree of the in- 

 tensity of bluencss among these grains produced on the hybrid ears, 

 some dark blue, some faded blue or tinged and others intermedia tely 

 linked between them. These decrees of intensity may be connected with 

 the genetic composition of the triple system of the endosperm nucleus, 

 as was suggested by several investigators' 1 in maize inheritance. 



1; Emerson. Anomal endo perm development in maize and the problem 



of bud sports. Zeitsekr. !'■ ind. Abstamm, a. Vererb. BJ. XIV, 1915. Hayes and 



Further experiments and inheritance in maize Connect icn I Agr. Exp. Sta. 



Ball. No. l- s , 1916, I'r.m and Ktjwada, < )n tli" comp iii f factorial formula 



for zygotes in the study of inheritance of leed-charactera of '/■ << Wayt I., with note 

 on seed pi Botanioal Magazine. Yd. XXX, L916. 



