STUDIES ON CERTAIN STORAGE DISEASES OF NEW VARIETIES OF APPLE IN EGYPT"
Gabr Abd EI-Wanees Nasr EI-Kot;
Abstract
Mature apple fruits are subject to the attack with some postharvest pathogenic fungi during harvesting, handling, marketing and storage causing various fmit rots. Chemical control of those pathogens using fungicides posses risks to the human health and environment. Therefore the present work studied the effect of certain biocontrol agents for controlling these postharvest pathogens and consequently reducing fmit rots as well as extending the
shelflife of apple fmits during storage.
The following results were obtained:
1- Penicillium expansum, BotJytis cinerea, Alternaria alternata, Fusarium latertium, Trichothecium roseum. A.spergillus niger and Rhizopus stolunUer were the major postharvest pathogenic fungi isolated from diseased apple fmits collected from different orchards, wholesale, retail markets as well as refrigerators, located at Kafr El-Sheikh and Garbia Governorates.
2- The in-vitro results indicated that, Trichoderma harzianum, Racillus suhti/is
and Pseudomonas .sp. were effective as biocontrol agents against these pathogenic fungi.
3- The in-vitro results showed that the diameters of blue rots caused by P. expansum were significantly less on fruits previously sprayed with I% CaCh two times after 2 and 5 weeks from full blooming.
4- Diameters of blue rots on apple fmits were significantly decreased by
dipping fmits in either. cell suspension (I 08 cell/ml) or cell free culture filtrates of Bacillus subtilis before atiificial inoculation with P. expansum compared to fmits either treated with benlate or non treated fmits, whereas treated fruits with spore suspension ( l 07 spor/ml) of Trichoderma
harzianum did not affect disease development.
shelflife of apple fmits during storage.
The following results were obtained:
1- Penicillium expansum, BotJytis cinerea, Alternaria alternata, Fusarium latertium, Trichothecium roseum. A.spergillus niger and Rhizopus stolunUer were the major postharvest pathogenic fungi isolated from diseased apple fmits collected from different orchards, wholesale, retail markets as well as refrigerators, located at Kafr El-Sheikh and Garbia Governorates.
2- The in-vitro results indicated that, Trichoderma harzianum, Racillus suhti/is
and Pseudomonas .sp. were effective as biocontrol agents against these pathogenic fungi.
3- The in-vitro results showed that the diameters of blue rots caused by P. expansum were significantly less on fruits previously sprayed with I% CaCh two times after 2 and 5 weeks from full blooming.
4- Diameters of blue rots on apple fmits were significantly decreased by
dipping fmits in either. cell suspension (I 08 cell/ml) or cell free culture filtrates of Bacillus subtilis before atiificial inoculation with P. expansum compared to fmits either treated with benlate or non treated fmits, whereas treated fruits with spore suspension ( l 07 spor/ml) of Trichoderma
harzianum did not affect disease development.
Other data
| Title | STUDIES ON CERTAIN STORAGE DISEASES OF NEW VARIETIES OF APPLE IN EGYPT" | Other Titles | دراسات على بعض أمراض تخزين الاصناف الجديدة من التفاح فى مصر | Authors | Gabr Abd EI-Wanees Nasr EI-Kot | Issue Date | 1998 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.