Bif1-pro1-Lg4 linkage on chromosome 8
--M. G. Neuffer and Dan England

Data from the cross of Bif1 pro1 Lg4/+++ on +++ are given below. We had some problems such as reduced numbers of the double dominant Bif1 Lg4, and poor expression of Lg4 in the A632 background used. However, we have been able to establish the order of these 3 genes as Bif1 pro1 Lg4. The plants were selfed to test for pro1.

 +++ x Bif1 pro1 Lg4/+++
 
Locus
Bif1
pro1
Lg4
TOTAL
No. Plts.
37
41
29
89
%
41.6
46.1
32.6
 
Classes
Region
Genotype
No.
Totals
Expected
Parental
Bif1 pro1 Lg4
19
   
 
+ + +
39
58
56.2
R1
+ pro1 Lg4
4
   
 
Bif1 + +
3
7
8.8
R2
+ + Lg4
5
   
 
Bif1 pro1 +
14
19
20.8
R1,2
Bif1 + Lg4
1
   
 
+ pro1 +
4
5
3.2

Paired Recombination Values
Bif1 --- pro1 0.1348 ± 0.0362
pro1 --- Lg4 0.2697 ± 0.0470
Bif1 --- Lg4 0.2921 ± 0.0482 


Please Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited only with consent of the authors

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