4.
Linkage of a new glossy character in chromosome 5.
This new glossy gives a semi‑dwarf plant with
transverse bands of necrotic tissue. The absence of recombinations with brittle‑1
indicates it lies close to the centromere of chromosome 5. McClintock's failure
to find glossy sectors in her studies with ring chromosomes composed of
proximal portions of the short arm of 5 would suggest that this new glossy gene
lies in the long arm of 5.
F2 data from Bt gl/bt Gl plants. Pr is segregating as is A2 but an aleurone ratio of 27:37 indicates three
aleurone genes are segregating.
|
Pr Bt |
pr Bt |
Pr bt |
pr bt |
wh Bt |
wh bt |
|
|
Gl gl |
Gl gl |
Gl gl |
Gl gl |
Gl gl |
Gl gl |
|
|
464 264 |
91 9 |
6 0 |
10 0 |
409 216 |
318 0 |
Total 1787 |
M.M. Rhoades and Ellen Dempsey