92 



INHERITANCE OF ANTHOCYAN PIGMENT IN PADDY VARIETIES 



On this hypothesis, it is seen there will be foilr kinds of reds, viz. : RRCC 

 RrCc, RrCC, RRCc. No attempt has so far been made to sort out the different 

 shades of red, but it is undoubted that various shades of red do occur in the 



In reality, however, as will be seen from further examples discussed 

 below, the constitution of the parents may have been much more complicated. 



(2) Examples 0/ 3 : 1 ratios. 



In a few cases the simple 3 : 1 ratio has been obtain-d. An example 

 of this wasafiorded by the heterozygous type Ba 1, noted in a former paper,i 

 picked from a variety named Gobrabali in 1911. The parent had a red api- 

 culus to the glumes, red awns and a coloured stigma, and in 1912 split into 



1. Red awns, glumes with red apiculus, coloured stigma, 73, 



2. White awns, glumes with green apiculus, white stigma, 23, 

 giving a ratio 3-17 coloured : 1 colourless. Here the colour in apiculus, awns 

 and stigma behaves as a single unit and may perhaps be due to the same 

 simple factor or to the same intei acting factors. If the latter, the simplest 

 explanation would be to suppose the parent heterozygous for one of the factors, 

 i.e., of the constitution RrC or ROc. 



Five of these coloured plants selected in 1912 again split in 1913 in the 

 proportions shown below : — 



Table II. 



' Hector, G. P. Notes on Pollination and Cross-fertilization in the Common Rico Plant. 

 Oryza saliva, Linn. Memoirs, Depl. of Agri., India, Bot. ISeries, vol. VI, no. 1, 1913. 



