Abstract
The development of highly informative DNA markers, such as simple sequence repeats (SSRs), is essential for breeding to select agronomically important traits and for genetic studies in pear. We developed SSR markers by using two approaches, RAHM (random amplified hybridization microsatellites) and 5' anchored PCR methods. Segregation analysis of the SSRs revealed that amplified fragments were derived from the same loci, using 3 sets of progenies from crosses between pear varieties. Genetic diversity was characterized using 32 varieties, including 10 from Japanese pear (Pyrus pyrifolia), 9 from Chinese pear (P. bretschneideri, P. ussuriensis), 10 from European pear (P. communis) as well as 3 wild relatives (P. calleryana). Diversity of SSR genotypes was observed among species as well as within species and 65 putative alleles were detected. The use of seven SSR markers was sufficient to differentiate between all of the 32 varieties.
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Yamamoto, T., Kimura, T., Sawamura, Y. et al. Simple sequence repeats for genetic analysis in pear. Euphytica 124, 129–137 (2002). https://doi.org/10.1023/A:1015677505602
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DOI: https://doi.org/10.1023/A:1015677505602