【Object】To discover key genes related to drought resistance of pear plants based on transcriptome data, and provide a theoretical foundation for the breeding of drought resistant pear varieties.【Method】High through-put transcriptome sequencing by illumina Hi Seq TM 2000 was performed using leaves of ‘Huangguan'pear(Pyrus bretschneideri ‘Xuehuali'×P. pyrifolia ‘Shinsseiki') and ‘Hwangkumbae' pear(P. pyrifolia‘Niitaka'×P. pyrifolia ‘Nijisseiki') under normal irrigation and drought stress treatments. Gene onto...