Abstract:

Jianbasuan and Huagai pears were used as materials to study the relationship between the
changes of pericarp structure and cell wall components and their storage characters. The results show that:
(1) A large amount of small crackles on the pericarp of Huagai pearwas observed. There were a lot of tumor
like objects and little cracks on the surface of J ianbasuan pear. Many damaged areas appeared on the surface
of Jianbasuan pear, and they could connected with each other, and intercellular junctions of the middle part of
pericarp of Jianbasuan pear broke completely and holes appeared on the damaged areas. (2) Compared with
Huagai pear, the content of cellulose, proto pectin and fruit firmness of Jianbasuan being poor storabilitywere
lower, while decay rate, water2soluble pectin and ethylene production were higher.

Key words: Pyrus ussuriensis, Pericarp, Ultrastructure, Cell wall