Investigative analysis shows functional differences in S-RNase alleles, impacting apple cultivar compatibility.
SummaryWe investigated the functional differences in three pairs of S-RNase alleles having similar sequences. It was confirmed using pollination tests that S19 and S28 behaved as different alleles, while S17 and S19 appeared to be the same allele. Our previous new allele designation of S6b in place of S17 and S19, and not S19 and S28, from S-RNase sequence analyses was therefore confirmed. The deduced amino acid sequences of S3 and S10, although showing high similarity (94%), were functionally distinct.
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Matsumoto et al. (2006) studied this question.
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