We determined partial genomic sequences including a hypervariable HVa (RHV) region and introns of the S
6-, S
12-, S
13-, S
14-, S
17-, S
19-, and S
21-RNases of apple. Previously, it was suggested by Broothaerts (2003) that the S
6 corresponded to S
25 in ‘McIntosh’/‘Wijcik’ and ‘Tydeman’s Early Worcester’, and S
19 corresponded to S
28. However, S
6 and S
19 are different from the S
25 and S
28, respectively. The determined sequences of the S
6 and S
12, and S
17 and S
19 are identical, and these four alleles seem to act as the same allele. We newly assigned S
6a in place of S
6 and S
12, and S
6b in place of S
17 and S
19 from the results of sequence analyses, not pollination tests. The sequences of S
13 and S
14 were also identical. We also newly assigned S
11 in place of S
13 and S
14. We had speculated that S
21 would correspond to S
t by PCR-digestion analysis, however, the determined sequence of S
21 was different from S
t.
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