OBSERVATIONS ON THE INHERITANCE OF 

 ANTHOCYAN PIGMENT IN PADDY 

 VARIETIES. 



BY 



G. P. HECTOR, M.A., B.Sc, 

 Economic Botanist to the Government of Bengal. 



[Received for publication on the 27th December, 1915.] 



A considerable proportion of paddy varieties are characterized bv the 

 presence of reddish and purplish authocyan pigment distributed throughout 

 various parts of the plant. The varieties so far studied at Dacca may, 

 with reference to the distribution of the pigment, be broadly classified as 

 follows :^ 



(1) Leaf-sheaths, apiculus of the glumes, and stigma coloured. 



(2) Leaf-sheath and apiculus of glumes coloured, but stigma colour- 



less (white). 



(3) Apiculus of glumes and stigma coloured., but leaf-sheaths colour- . 



less. 



(4) Apiculus of glumes onlv coloured. 



Class 1 is the commonest group— 2, 3 and 4 coutain.ing comparatively 

 few members. 



The colours concerned range from red through purples to almost black, 

 and it is noteworthy that in some of these coloured types the colour in the 

 stigma is a darker shade than the colour in the leaf-sheath and apiculus, and, 

 as will be shown below, appears to contain in such cases additional colour 

 factors not present in the leaf-sheath and apiculus. 



It is somewhat doubtful if classes 3 and 4 really exist. The apparent 

 absence of colour in the leaf-sheath iu these cases may, as is suggested by 



