The researchers used polymerase chain reaction (PCR) amplification to determine the S-genotypes of a set of Turkish apricot cultivars, and extended the method to identify self-compatible apricot cultivars. "We determined the complete S-genotype of 51 cultivars and the partial S-genotype of four cultivars. A total of 32 different S-genotypes were assigned to the 51 cultivars, and many of them (28) were classified into newly established cross-incompatibility groups", Halsz noted. Another 12 cultivars demonstrated unique incompatible genotypes and seven self-compatible cultivars were identified in the examined accessions.
"The fact that Turkish and Hungarian apricot cultivars carry twelve and five S-alleles, respectively, and all five alleles detected in Hungarian cultivars were also present in Turkish apricots furnished molecular evidence supporting the long-suspected historical connection between Hungarian and Turkish apricots", said Halsz. The research confirms that Turkish germplasm contributed considerably to the development of several desirable Hungarian apricot cultivars." Halsz added that the connection between the two gene pools appeared to be relatively recent, associated with historical events dating back 300 years.
This study is the first to examine S-genotype diversity of apricots native to Turkey. The scientists anticipate that the research findings will be used by producers to make correct selections of pollination partners in new orchard plantings, as well as by researchers interested in the evolutionary history of apricots.
|Contact: Michael W. Neff|
American Society for Horticultural Science