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.
A
new mutable allele of vp1.
‑‑Stinard, PS
A
viviparous kernel mutant with large revertant sectors of aleurone color on a
colorless background was found segregating on the selfed ear of a colored
aleurone Spm‑w line (genotype [M14/W22 ACR X a1 Spm‑w Sh2;
wx1] selfed). Colored nonviviparous kernels from this
ear were planted, and the resulting plants selfed and outcrossed to vp1‑Mc and wx1‑m8::Spm‑I8 testers. This mutant was found to be allelic to vp1, and has been named vp1‑Pookie for the person who
identified it. All plants segregating
for sectored viviparous kernels segregated for sectored kernels in outcrosses
to the vp1 tester;
all such plants also happened to carry wx1. However, none of the outcrosses of
these same plants to the wx1‑m8
tester segregated for waxy mutable kernels; all waxy kernels were stable,
indicating that Spm is not
responsible for the aleurone sectoring observed in vp1‑Pookie.
Tests will be conducted with receptor alleles for other transposable
element systems in order to determine the cause of mutability.