Evidence for gene inactivation in the virus-induced aberrant ratio phenomenon in maize.
Reciprocal crosses were made between pairs of plants showing the "aberrant ratio" (AR) effect at the a locus, and simultaneously between these plants and an aa tester. The results suggested that the AR effect in the particular line that was used could be explained by inactivation of a gene other than A, but also required for aleurone color. Segregation ratios in additional crosses largely fit expectations predicted on the basis of this hypothesis.
Samson
R G
RG
Departments of Plant Pathology and Agronomy, University of Nebraska, Lincoln, Nebraska 68583.
Brakke
M K
MK
Compton
W A
WA