Chemical composition of cuticular waxes during fruit development of Pingguoli pear and their potential role on early events of Alternaria alternata infection.

To elucidate the role of fruit wax in fungal infection, changes in chemical composition of wax during fruit development of Pingguoli pear, and their role in Alternaria alternata infection were studied. Results showed that wax content increased during fruit development. Fruit harvested 130 days after full bloom (DAFB) had a peak wax content that was eight times higher than from fruit at 100 DAFB.