Abstract
Information on S-genotypes is essential for designing orchards of Japanese apricot ( Prunus mume Sieb. et Zucc.) and for hybridization. However, this information is lacking for most cultivars grown in China. Thus, in this work, the S-genotypes of 24 Japanese apricot cultivars native to China were identified by sequencing the PCR products obtained from allele-specific polymerase chain reaction (AS-PCR). Seventeen S-RNase alleles were amplified, ten of them for the first time. The new S-RNase alleles were submitted to GenBank and denoted them as S 17, S 18, S 19, S 20, S 21, S 22, S 23, S 24, S 25 and S 26. Furthermore, the S-genotypes of four Japanese apricot cultivars were confirmed by field-testing cross-pollination.
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