Taste V. Segregation of genes and chromosomes in the testcross progeny of the 
triploid hybrid [ (bmi, Igi, ai, sui, gli, 71, wr  T’. dactyloides) < bmi, /gi, ai, sui, 
gh, ji, wr) |. 
- Plant Number of ‘Number of extra Dominants from Number sf caweead 
Number Chromosomes Tripsacum Tripsacum Tripsacum chromo- 
chromosomes somes excluding J 
62-580- 8 24 4 Su, Lg, (J)! 2 
- 9 23 3 Su, Lg 1 
-10 27 7 Su, Lg 5 
62-582-16 21 1 Wx O 
-18 24 4 Wx 3 
-20 21 1 Wx O 
-22 22 2 Wx, (J) 1 
-23 20 0 None 0 
-25 28 8 Su, Wx, A, Gl, Bm, (J) 3 
-26 29 9 Su, Wx, A, Gl, Lg, Bm 3 
-27 33 13 Su, Wx, A, Gl, Lg, Bm, (J) 7 
-29 25 5 Su, Wx, Lg, (J) 2 
-31 29 9 Su, Wx, Bm 6 
-32 ae 2 ba, Wx 0 
62-586-41 22 2 (J) 2 
-42 26 6 Bm 5 
-43 25 5 None 5 
45 23 3 Lg, (J) 2 
-47 23 8 (J) 3 
-49 27 7 Wx, A, Gl 4 
-51 28 8 Wx, Gl, (J) 5 
-59 24 4 Wx, A, (J) 2 
-60 24 4 Wx, A, (J) 2 
-61 25 5 Wx, Lg 3 
62-588-65 32 12 A, Gl, Bm 9 
-68 Q7 7 A, Gl, (J) 5 
-71 25 5 Gl, (J) 4 
-72 24 4 Gl 3 
-77 25 5 Gl, Bm 3 
-81 22 2 A 1 
-84 23 3 A 2 
-86 23 3 A 2 
-89 22 2 Lg, (J) 1 
-92 25 5 Lg, (J) 4. 
Totals 163 63 100 
Theoretical * 54 109 
'See text for unreliability of .) phenotypic expression. The total at the bottom 
of the column excludes J. 
* On the assumption that there is a genom of nine unmarkable chromosomes and 
a genom of nine markable chromosomes for which three markers are lacking. 
