PARNELL, EANGASWAMI AYYANGAE, AND RAMIAH 



95 



results given by F3 it must have been segregating. Pigmented and 

 unpigmented plants occurred in the ratio o : i in F2 ; in F3 and F4 some families 

 were pure and others impure for pigmentation. All unpigmented plants are 

 disregarded in the following description. 



The original rogue, referred to as F], must have been of the constitution 

 L 1 G g S s A A — i.e., the same as those described above w^th the exception of 

 the pure purple axil. The results from F3 and F4, given in Table XIV below, 

 show the same behaviour of the segregating factors. L and G are coupled 

 in all but a few rare individuals, and repulsion takes place between LG and S. 



As noted the stigma was not examined in F2 but its nature in the F2 



parents selected can be deduced with certainty from their behaviour in F3. 



The general behaviour of the whole group, neglecting unpigmented plants, was 



as follows : — 



6 Fo plants LGsA type bred true in 2,486 individuals. 



7 F3 

 6 Fo 



8 F3 

 6 F2 



11 F3 



IgSA 



LGSA 



T 



6,945 

 2,916 

 5,988 

 gaA'e 1 : '2 : 1 ratio * y 



s 



\.BLE XR'. 



6ee Table XIV. 



Origin of parent 



Reference No. 



LGsA LGSA 



IgSA 



No. 153, N, l'„ 



Total .. 

 Calculated 1 : 2 : 1 



No. 190, F., 

 No. 61J, :^, F, 



Total .. 

 Calculated 1:2:1 



also L g hi A, 1 



LgS A, 1 



Lg S A, 3 



I G S A, 4 



2,636 



2,773:5 



5,529 

 5,547 



2,929 



2,773-5 



614-N 



f 8 plants, N, ) 

 I LGSA 



221 also IGSA, 1 



, . , (IGSA, 5 



'""^■^ " \Lr,SA, 2 



1,725 



1.6S8 



* With very occasional aberrant types in addition. 



