University of Massachusetts
Both the anthers and glumes of the annual
teosintes of Mexico are smaller than those in corn except for vestigial
glume (Vg) corn. One of the viability problems of Vg corn
is that the immature anthers are exposed to sun-burning and blasting. Why,
then, not transfer the small anthers of teosinte into Vg corn? We
have been attempting to do this for about five years, generally with unsuccessful
results except for one lineage. In most cases the small anthers of teosinte
appear linked to small glumes that have an additive effect with the Vg
gene, producing an inviable combination. Apparently with the exceptional
case, the small anthers and small glumes of teosinte have been separated
by crossing over. Some promising isolates have been made that should lead
to improved fully male-fertile lines that are homozygous Vg.
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