PbSSs	Pear Sucrose Synthase genes
Sus	Sucrose Synthase
Inv	Invertase cleavage
DAF	Days after flowering
Ka	Nonsynonymous
Ks	Synonymous
Mya	Million years
MEME	Multiple Em for Motif Elicitation
NJ	Neighbor-joining
qRT-PCR	Real-time PCR
Mb	Megabyte
Gb	Gigabyte
UDP	Uridine diphosphate
gDNA	Genomic DNA
CDS	Coding sequence
MW	Molecular weight
pI	Isoelectric point