168 CORRELATION OF COLOUR CHARACTERS IN RICE 
VI. CandD. Cgives3: 1, D 15: 1, so expected ratio, if segregating 
independently, is— 
ADICDe 3 “sic: 3} (O{6l 2 1 ed 
Observed sur onal : 819 ; 0 : 297 (7 families of 4,687 
plants) 
The combination of coloured glumes (C) with green apiculus (d) does 
not occur. 
This is the same as previous cases, viz.. C due to a single factor, D to two 
factors, the factor responsible for C and an additional one, both or either 
capable of producing colour. Thus— 
12 C 4d 
——Ee— eee SS 
CD 3 (Ofel cD ed 
9 3 : 3 : 1 
~ 0 ee a ee 
115; D : ld 
HOY {OAD =e Sci: 0 Cd : 1 ed 
Observed 3571 : 819 : 0 : 297 (7 families of 4,687 
plants) 
Expect Sa By alleys vgetsinkenes 3 M0 : 292-93 
7. Variety Agartollah x Variety C25. 
(A) The combination “ leaf-sheath, pulvinus, auricles, internode, outer 
glumes, inner glumes, apiculus”’ sticks together (1 exception was found 
in 4,669 plants examined, wz., one plant with coloured apiculus and 
coloured glumes, but green leaf-sheath, internode, pulvinus and auricle), 
giving 9 coloured : 7 colourless (total 8 families, 1:3: 1). 
(B) The ligule gives 27 coloured: 37 colourless (total 8 families 
barr algen 
I. Aand B. A segregates 9:7, B27: 37. If independent segregation 
takes place, the expected ratio 1s— 
A 9 arnvien) 
243 AB : 189 aB : 333 Ab: 259 ab 
Observed zee 1. Ou2 : 0 : 699 : 1,998 (4,669 plants, 7 
families) 
The combination of “green leaf-sheath, pulvinus, auricles, internode, 
outer glumes, apiculus ” (a) with coloured ligule (B) does not occur. 
