Different chemicals has different efficiency in coloration induced and fruit quality regulating

• 1、College of Horticulture,Northwest A&F University,Yangling 712100
• 2、Department of Horticulture,Zhejiang University,Hangzhou 310058

Abstract：Red Chinese sand pears (Pyrus prifolia Nakai) native to Yunnan Province and southern part of Sichuan Province, Recently, the pears had been widely accepted by consumers. Poor fruit coloration has been a noticeable problem, however, there are short of the technique of coloration regulation on production. Red Chinese sand pear cultivar, ‘Mantianhong’ (mid-maturing) was used as materials in this study. Color response and related physiological mechanism of coloration regulation of red Chinese sand pears to post-harvest induced is influenced by chemicals was investigated systematically. The results are as follows: Different chemicals has different efficiency in coloration induced and fruit quality regulating. No positive efficiency was observed in 0.4 m mol•L-1ABA and 3 m mol•L-1GA treatment in inducing anthocyanin accumulation of ‘Mantianhong’. However, alone 2 mmol•L-1 ETH, 0.12 mmol•L-1GNT, 2 mmol•L-1MJ and mixture of these chemicals enhanced anthocyanin accumulation in red Chinese sand pear. Simultaneous irradiation with MJ and ETH had a synergistic effect in inducing anthocyanin accumulation of ‘Mantianhong’. All these treatments can obtain fruit quality of ‘Mantianhong’ pear, such as fruit firmness, TSS, soluble sugar and organic acid. This study will provide theoretical and technical support for improving the coloration of red Chinese sand pears.

Keywords： Red Chinese sand pear anthocyanin coloration regulation chemicals