The Influence Of 1-Methylcyclopropene On The Post-harvesting Physiology And Reservation Effect Of The Huangguan Pear And Housui Pear

Huangguan and Housui are the most important early middle maturity of pear-cultivars, demand exceeds supply in domestic and overseas market. We have studied systematically that Huangguan and Housui in different picking time and different afterripening postharvest were treated by 1-Methylcyclopropene (1-MCP),and found out suitable index, and then confirmed the feasible picking time and the optimal time, furthermore provided the theoretical basis in commercial in resonable application .As a result, Huangguan and Housui pears were treated by 1-MCP compared with control in different picking time, 1-MCP treatment controlled ethylene production and respiration rate , and postponed the time of respiration peaks; significantly delayed the decline of flesh firmness, total soluble solids content, titratable acidity content, Vc content, SOD activity and decay rate; Obviously inhibited the increasing of MDA content,membrane relative permeability and PPO activity, but 1-MCP treatment is not the key on Browning spot of Huangguan pear. In a word, Huangguan pears'appropriate collection time is Aug 18,2006 from the quilaty of storage, and Housui pears'appropriate collection time is Aug,10 2006. different afterripening time of Huangguan and Housui pears is important, the longer the time of afterripening, the worse the storability. But proper afterripening may enhance the flavor,taste and other edible quality. In Hebei Gaocheng, if Huangguan pears collection time is Aug 10,2006, in considering of browning spot of Huangguan pears,we proposal made 5 days afterripening. Housui pears'collection time is Aug 18, 06, if stored a period of time, the appropriate afterripening time is collection same day, if stored short term, the appropriate afterripening time is 5 days.