86 



INIIEHITANCK OK UKI> COLOn: IN .UTK. 



Thus, ill a ti)tal of 54,963 plants of the F, generation, 

 produced from unfixed reds of the Fj generation, the ratio of red 

 plants to green ones is almost exactly as 3 : 1. 



FixKii Rk:) Plants. 

 In Tables III and V, it will be scon that a number of plots 

 in thf F, i^eneration contained no green plants, viz. : — 



In none of the.'^e plots is a single green plant to be found 

 and the plants are therefore, presumablj', fixed with reference to 

 the inheritance of red colour. On the other hand, as regards 

 degree of colouration ; while two or three plots contain practic- 

 ally only one type of red plant, the plants in the majority of 

 these plots, as was the case with the red planes of the F^ genera- 

 tion (Tables I and II), are a mixture of the several shades of 

 red, enumerated at the commencement of this paper (p. 1, types r^ 

 Ik <■). Differences of such magnitude as these, if hereditary', have 

 hitherto been held to constitute the distinction between one 

 race and another. 



In the following Table No. VII it will be seen that one of 

 the plots (No. 263.R,) contained practically only dark red 

 plants, while in a second (No. 262. R^) were 85 per cent, of dark 

 red plants. In a third plot all the plants had green stems with 

 red petioles and fruits. Thus, in the latter case, by crossing a 

 pure green jute with a dark red one, it has been possible to 

 produce, pure and fixed, a common intfimediate colour type, 

 an interesting fact which suggests that the origin of the other 

 intermediate races of jute, at present under cultivation in Bengal, 

 might also, possibly, be traced to hybridization. 



