中文摘要：

为开发碧桃转录组微卫星信息，利用454高通量测序技术，对其花瓣转录组序列进行SSR位点发掘，结果发现含SSR的序列4705条，共得到5668个SSR，平均每3．49 kb出现1个SSR。微卫星序列主要以三碱基重复为主，约占总数的42．66％。笔者共发现516种碱基重复基元，所占比例最高的为（AG／CT）n（18.34％），其次是（ AAG／CTT） n（12.42％）。微卫星多为重复长度小于20 bp 的短序列，长度大于20 bp 的微卫星仅占总数的12.13％。研究还发现碧桃花瓣微卫星的频率和长度呈显著负相关（ P＜0.05），相关系数为－0.246。

英文摘要：

To obtain information of Prunus persica cv. duplex, the transcriptome of peach flowers were sequenced by 454 high-throughput sequencing technology. A total of 5 668 SSRs were identified in 4 705 sequences, with an average densi-ty of one SSR per 3.49 kb. Tri-nucleotide repeats were the most abundant, accounted for 42.66% of all SSRs. Among all the 516 SSR motifs, （ AG/CT ） n was the most frequent repeat motif （ 18.34%） , followed by the （ AAG/CTT ） n （ 12.42%） . The microsatellites in length below 20 bp were in maximum proportion, while the microsatellites over 20 bp were only 12.13%. There were significant negative correlation （ P〈0.05） between the frequency of microsatellites and the length, the correlation coefficient was -0.246.