Tag Archives: Citrus

Study of Distribution of Penicillium spp. Mold on Citrus Fruits Varieties after Postharvest and Cold Storage and Evaluation their Damages in Latakia Governorate

Abd Alrahman Khafta*(1)

(1). Plant Protection Department, Tishreen University, Latakia, Syria.

(*Corresponding author: Dr. Abd Alrahman Khafta. E-Mail: dr.khafateh54@yahoo.com).

Received: 25/11/2018                                Accepted: 02/12/2018

Abstract

Citrus cultivation is increasing globally, the production exceeded 123 million tons in 2013, in Syria the production reached 1.5 million tons in 2015 in Latakia and Tartous governorates. Although citrus fruits have a long marketing and storage life but it suffers significant physiological losses after harvest in case it is not stored and treated well. The experiment was conducted in 2016 and 2017 during postharvest and cold storage period of citrus fruit varieties to study the spread of molds of the genus Penicillium spp. on citrus fruits varieties after postharvest and cold storage and evaluation their damages in latakia governorate.  The results showed that green and blue molds caused by Penicillium digitatum and Penicillium italicum were the most damaging after post-harvest. Satsuma variety then clementine, navel orange, eureka and grip fruit were the most influenced of these diseases, where the rate of incidence was 9.3% and severity 3.1 for green mold in Satsuma variety, while the intensity reached 5.1% and severity was 1.9 for green mold on Satsuma variety in the sorting center after 30 days of stora, then the other citrus were followed with less percentages. The other fungus associated and less spread on citrus fruits were: Guingnardis citricarpa-colletotrichum Gloeosporioidespenz- Botrytis cinerea – Cercospora angolense-Phytophthora citrophtoraof

Key words: Citrus, Mold citrus fruit, Penicillium digitatum, Penicillium italicum.

Full Paper in Arabic: PDF

Distribution of Citrus tristeza virus in Syrian Coast

Ensaf Akel*(1) and Imad Ismail(2)

(1). Agricultural Research Center in Lattakia, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.
(2). Plant Protection Department, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(*Corresponding author: Dr. Ensaf Akel. Email: ensafakel5n4a@gmail.com).

Received: 24/04/2016                         Accepted: 24/05/2016

Abstract

A survey of Citrus tristeza virus (CTV) (CTV, Closterovirus, Closteroviridae) in citrus orchards in Syrian Coast was conducted between March and November 2011. 288 samples were collected (219 samples from old tree, and 69 samples from public and private nurseries) from three regions: Lattakia, Jablah, Banyas. Most of samples showed symptoms similar to symptoms caused by viral diseases. Tissue Blot Immuno binding Assay TBIA was used to detect CTV. Results showed the distribution of Citrus tristeza virus, in citrus orchards in Syrian Coast in different rations in Lattakia region (27.64%), Banyas (22.05%), and Jablah (19.58%). Virus was recorded on different citrus varieties, which belongs to different groups. The highest infection value was recorded on Sweet orange (35.92%), Mandarine (8.16%), Sour orange (6.25%), and Grapefruit (5%).  Also the virus was recorded in some public and private nurseries, in Vdeo and Al Hanadi locations, so that is a serious indicator of virus prevalence, because the rootstocks are distributed to the farmers through these nurseries.

 Key Words: Citrus, CTV, Survey, TBIA.

Full paper in Arabic: Distribution of Citrus tristeza virus in Syrian Coast