maize mutant phenotypes

anthocyanin deletion chromosome segment carrying A1 Sh2 normal albino and lethal alleles whose recessive null phenotypes are expressed at the loss of a covering ring chromosome carrying the respective dominant allele of these loci. Photo of an ear from, the cross of a1-p Sh2/a1-x3 (a viable heterozygote), X a1-x3/a1-x3/Ring A-b (viable homozygous deficiency because it is covered by the A1-b ring that carries the normal alleles of the lost loci) showing colored kernels with colorless shrunken sectors, colored kernels with pale nonshrunken sectors (loss of ring A1-b) with the a1-x3 and and a1-p female contribution.

anthocyanin deletion chromosome segment carrying A1 Sh2 normal albino and lethal alleles whose recessive null phenotypes are expressed at the loss of a covering ring chromosome carrying the respective dominant allele of these loci. Photo of an an, a1-x1/a1-x1/Ring A1-b plant near flowering showing albino, chimeras, indicating ring loss.

anthocyanin deletion a-x1 def/Ring A1-b; Ear from the cross a1-p/a1-x1 X a1-x1/a1-x1/Ring A-b ear showing colorless shrunken sectors indicating loss of ring-carrying A1-b and Sh2.