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: 18/10/2018                                Accepted: 10/11/2018

Abstract

This study showed an increase in the damages of two fungus species of Phytophthora spp. on the sensitive genotypes of strawberry plant, at two locations (Arzona and Sefsafe) in Tartous governorate, during 2016 and 2017, which were grown in vivo. p. Cactorum which caused crown and leather rot was isolated and p. fragariae which was the causal agent of red stele root rot also was isolated on the selective medium CMA (corn meal agar) and (PARPNHB) compounds. The rate of the infection % and the severity % of red stele root rot were 16% and 5.8% in Arzona and reached 15% and 5.6 % respectively in Sefsafe. Regarding crown rot, the infection% was 13% and severity was 3.6% in Arzona, while the values reached 14% and 4.2% respectively in Sefsafe. In terms of leather rot, the infection % was 9% and severity was 3.2 % in Arzona, but the percentages accounted 8% and 3.1% respectively in Sefsafe.

Key words: Phytophthora strawberry, Crown rot, Red stele root rot, Leather rot.

Full paper in Arabic: PDF