果实生长期用MeJA处理对‘红贵妃’芒果货架品质的影响

我国芒果产区因缺乏采后处理条件，致使芒果在货架期品质劣变严重。本文研究了在果实生长期喷施茉莉酸甲酯（MeJA）对‘红贵妃’芒果采后品质的影响。结果表明：与对照相比，5 mg/L的MeJA处理显著降低了芒果货架期的病情指数和发病率、延缓了果皮转黄、提高了果肉的TSS和Vc含量、降低了TA含量，使芒果在货架期保持较好的外观和营养品质。同时，MeJA处理抑制了采后炭疽病的发生，在货架前期降低了CAT和POD活性，提高了总酚、总黄酮、H2O2含量，在货架后期提高了CAT和POD活性，降低了H2O2含量。本研究表明，生长期MeJA处理使芒果保持较好货架期品质与其增强果实在货架期的抗病性有关。

Effect of MeJA Treatment during Growth Period of Fruit on the Shelf-life Quality of

The mango quality deteriorated seriously in shelf life due to the lack of postharvest treatment conditions in mango production areas in China. In this study, the effect of spraying methyl jasmonate (MeJA) to growing fruit on the shelf-life quality of ''Hongguifei'' mango was investigated. The results showed that, compared with control, treatment with 5mg/L of MeJA significantly reduced the disease severity and incidence of mango, delayed the yellowing of the pericarp, increased the TSS and Vc content of the pulp, and decreased the TA content of mango during the shelf life, indicating that MeJA treatment during the fruit growth period could maintain better appearance and nutritional quality of mango during the shelf life. At the same time, MeJA treatment inhibits the occurrence of postharvest anthracnose, reduced the CAT and POD activities and increased the contents of total phenolic compounds, total flavonoids and H2O2 in early-stage shelves, enhanced the CAT and POD activities and reduced H2O2 content in the late shelf-life stage. This study shows that the MeJA treatment at fruit growing period to maintain better shelf-life quality of mango is related to its enhancement of disease resistance of fruit.