Maize
Genetics Cooperation Newsletter vol 84 2010
Please
Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited
only with consent of authors.
Linkage Tests of waxy1 Marked Reciprocal Translocations
obtained from the collection of William Findley
Janet Day Jackson and Philip Stinard
Maize Genetics Cooperation � Stock Center
Urbana, IL
In the collection of A-A translocation stocks maintained at MGCSC is a series of waxy1-linked translocations that are used for mapping unplaced mutants. Over the last decade, new wx1-linked translocations have been introduced into this series from various Cooperators.
We report here the positive results of two-point linkage tests for three of these new accessions. The linkage tests were set up as modified backcrosses as indicated. These new wx1 marked translocations have been propagated and are now available for distribution. Additional Findley translocation stocks will be tested as time allows.
Table 1. wx1 T4-9e
(4S.53; 9L.26)
A) The Findley source showed linkage of wx1 with su1.
Two-point linkage data for su1-wx1 T4-9e
Testcross: [Su1 wx1 T4-9e x su1 Wx1 N] x su1 wx1 N
source:2004-1216-3^Findley
Region |
Phenotype |
No. |
Totals |
0 |
+ wx |
542 |
|
|
su Wx |
475 |
1017 |
1 |
+ Wx |
146 |
|
|
su wx |
46 |
192 / 1209 |
% recombination su1-wx1= 15.9 + 1.1
Table 2. wx1 T4-9g
(4S.27; 9L.27)
A) The Findley source showed linkage of wx1 with su1.
Two-point linkage data for su1-wx1 T4-9g
Testcross: [Su1 wx1 T4-9g x su1 Wx1 N] x su1 wx1 N
source:2004-1217-3^Findley
Region |
Phenotype |
No. |
Totals |
0 |
+ wx |
393 |
|
|
su Wx |
328 |
721 |
1 |
+ Wx |
128 |
|
|
su wx |
90 |
218 / 939 |
% recombination su1-wx1= 23.2 + 1.4
Table 3. wx1 T7-9(027-9) (7L.61; 9S.18)
The
Findley Source showed linkage of wx1 with
gl1.
Two-point linkage data for gl1-wx1 T7-9(027-9).
Testcross: [Gl1 wx1 T7-9(027-9) x gl1 Wx1 N] x gl1 wx1 N
source:2004-1223-1^Findley
Region |
Phenotype |
No. |
Totals |
0 |
Wx gl |
633 |
|
|
wx + |
710 |
1343 |
1 |
Wx + |
144 |
|
|
wx gl |
122 |
266/1609 |
% recombination gl1-wx1= 16.5+ 0.9