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Control method of postharvest fungus diseases of apples

A technology of fungal diseases and control methods, which can be applied to the preservation of fruits and vegetables, preservation of fruits/vegetables through freezing/refrigeration, preservation of fruits/vegetables through radiation/electrical treatment, etc., which can solve poor control effects, damage to apple quality, and loss of products Questions such as value

Active Publication Date: 2017-05-24
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the experimental results show that 250-800GY ray irradiation is not effective in controlling Botrytis cinerea and brown rot, and continuing to increase the treatment dose will lead to damage to the quality of apples after harvest and loss of commercial value

Method used

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  • Control method of postharvest fungus diseases of apples
  • Control method of postharvest fungus diseases of apples
  • Control method of postharvest fungus diseases of apples

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, the Botrytis cinerea and brown rot pathogens artificially inoculated on apples are treated with a separate irradiation treatment, and the killing effect and its influence on the quality of apples are observed:

[0020] Inoculate gray mold and brown rot bacteria on PDA medium, put them in an incubator, and incubate them in the dark at 25°C for about two weeks, elute the spores on the medium with sterile distilled water, count them under a microscope, and adjust the spore suspension solution concentration to 5×10 4 individual / mL. Then inoculate the prepared spore suspension onto the surface of refrigerated apples at 5°C, one inoculation point per 10 μL.

[0021] The inoculated apples were irradiated with different doses, and the inoculated apples that were not irradiated were used as controls, and stored at 5°C for 30 days after treatment, and the incidence was observed, and the incidence rate was calculated (in the embodiments of the present inventio...

Embodiment 2

[0029] This embodiment uses cyanide fumigation alone to treat Botrytis cinerea and brown rot pathogens artificially inoculated on apples, and observes the killing effect, its phytotoxicity to apples and the residual situation on apples:

[0030] Use the same method in Experiment 1 to inoculate apples refrigerated at 5°C, and then use different doses of cyanide to fumigate at 5°C for 2 hours, and after dispersing the air for 1 hour, take the inoculated apples without fumigation as a control, and store them at 5°C for 30 days. The incidence statistics are shown in Table 3.

[0031] Table 3 Effects of single cyanide fumigation treatment on the incidence of botrytis cinerea and brown rot in artificially inoculated apples

[0032] fumigant dose control 5g / m 3

10g / m 3

20g / m 3

30g / m 3

40g / m 3

Botrytis 98±5％ 71±5％ 40±3％ 11±2％ 8±1％ 4±1％ brown rot 95±4％ 86±4％ 38±4％ 13±3％ 9±2％ 5±1％

[0033] The results in Table 3 show t...

Embodiment 3

[0040] Cyanide fumigation combined with irradiation treatment was used to treat Botrytis cinerea and brown rot artificially inoculated on apples, and the killing effect was observed:

[0041] Use the same method in Example 1 to inoculate refrigerated apples at 5°C, then use different concentrations of cyanide to fumigate at 5°C for 2 hours, and then irradiate them with different doses after 1 hour of dispersing the air. The experimental results are shown in Table 5 and Table 6.

[0042] Table 5 Effects of combined treatments on the incidence of botrytis cinerea in artificially inoculated apples

[0043] different treatment 200GY 400GY 800GY 5g / m 3

45±4％ 15±3％ 4±2％ 10g / m 3

12±4％ 0±0％ 0±0％ 20g / m 3

5±2％ 0±0％ 0±0％

[0044] Table 6 Effects of combined treatments on the incidence of artificially inoculated apple brown rot

[0045]

[0046]

[0047] The results in Table 5-Table 6 show that it is necessary to use 10g / m 3...

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Abstract

The invention provides a control method of postharvest fungus diseases of apples. The method comprises the following steps: 1, fumigating: fumigating apples under a refrigerating condition by adopting a fumigating agent to obtain fumigated apples; and 2, irradiating: irradiating the fumigated apples obtained in step 1. The above combined treatment method can completely control the postharvest gray mold and fruit rot of the apples, has no unfavorable influences on the quality of apples, avoids the problem of pesticide residual, and has certain application prospect in the control of the postharvest diseases of the apples.

Description

technical field [0001] The invention relates to a method for controlling postharvest fungal diseases of apples, and belongs to the technical field of fruit postharvest disease prevention and control. Background technique [0002] Apple is the largest fruit in my country, and its total planting area and annual output both rank first in the world. Due to the short fruit-hanging time of apples, the production and sales generally adopt the mode of centralized harvesting, refrigerated storage, and batch-by-batch marketing. However, fresh fruits are very easy to carry pathogenic fungi, resulting in high incidence of postharvest diseases during storage and causing serious losses. [0003] Gray mold caused by Botrytis cinerea and brown rot caused by Monilinia fructigena are the main diseases of apples during cold storage. Not only will they cause serious storage losses, brown rot is also a harmful organism that is concerned by the quarantine departments of major apple exporting co...

Claims

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Application Information

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IPC IPC(8): A23B7/144A23B7/015A23B7/04
Inventor 刘涛李丽张广平李柏树王跃进
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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