i8 



Bulletin 392 



mauves nor pinks. The summation of data for this group is: dark 

 blues, 45; light blues, 64; whites, 55. Eight of the whites were faintly- 

 flushed with color, and so were really tinged whites in the blue series. 

 It is significant to note that in all the four pedigrees in which these tinged 

 whites made their appearance there was a common ancestor, plant 21. 

 The blue factor B was brought in by this strain, as was further shown by 

 the evidence from collateral breeding. 



Another group of light blue plants threw mauves and pinks as well 

 as blues and whites when they were selfed. These plants, together with 

 their parents and ofifspring, are given in table 5 : 



TABLE 5. Light Blues Selfed 



Pedigree no. 



222-10. 



132-2. .. 



132-3- ■■ 

 I 32-2-1 . 

 132-3-8. 



151-3- 

 151-4- 

 151-6- 



220-2. 

 220-5. 



231-3- 



232-3- 



"200-2-4 ■ 



Colors of 

 parents 



Light blue X 

 white flaked 

 magenta 



Pink X white 



Tinged white 

 X dark blue 



Dark blue X 

 white 



.Pink X light 

 blue 



Pink X light 

 blue 



Dark 

 blue 



I 



10 



39 



Light 

 blue 



29 



51 



Mauve 



Pink 



10 



White 



23 (i tinged) 



4 



5 



4 (i tinged) 



42 

 33 



* 200-2-4 was recorded as light blue, but when selfed it gave 33 whites and no colors. It must have 

 been a white itself. 



If a light blue were simplex for B, then in the recombination of genes, 

 due to selling, mauves and pinks might appear, as in the cases shown 

 in table 5, due to the dropping-out altogether of the gene B. 



If the light blue were heterozygous for all three genes, B, R, and X, 

 then there would result a great number of genotypes in the recombination 

 of genes following self-fertilization. The phenotypes resulting would be 



134 



