The Sensitivity of some Types of Citrus Fruits, the role of the Propolis and the Color of Storage Bags in the Development of Green Mold Caused by Fungi Penicillium Digitatium

Abstract

The results of the study indicated that green mold caused by Penicillium digitatium was noticed in all types
of citrus fruits (orange, mandarin, bitter orange, lemon). The most sensitive among these fruits was the
mandarin with 56.12% infection, followed by orange with 40.18%. On the other hand, the bitter orange
and the lemon showed more resistant to the disease, and the their infection percentages were (32.14% and
30.55% respectively. The results indicated that the color of the bags had a great effect on the development
of the disease where the infection percentages when using light green bags and light yellow bags were
(19.68%, 17.24%) respectively. While for the dark black bags, the infection percentage was 13.73%. The use
of porpolis in all concentrations (6, 8, 10, 12) g/l did not lessen the size of the infected area compared with
contaminated treatment by pathogen.