Figure 2.

rfo alleles. Panel A shows the nucleotide sequences of RT-PCR products obtained from pooled RNA samples of fertile plants of an F5 Asian radish mapping population [16] homozygous for the dominant Rfo restorer allele (Rfo/Rfo) or sterile plants (rfo/rfo) of the same population. Nucleotide differences between the two sets of sequences are enclosed in boxes. The amino acid sequences of various Rfo alleles and the corresponding region of PPR-A are illustrated in Panel B. rfk refers to the sterile allele of the Rfk1 restorer of the related Kosena CMS system reported in [17]. The sequence of Rfk1 is identical to Rfo.