The Effect of Potato Y Virusand Cucumber Mosaic Viruson the Growthof Tomato in Greenhouses

This research aimsto study the effect of single and mixed infection of Potato Y Virus (PVY) and Cucumber mosaic virus(CMV) on the number of leaves, number of branches, plant height and stem circumference of tomato plants (cv.Elegro and Local). The experiment was carried out in 2012 in a greenhouse in Tartous. Results show that the interactions in both varieties to virus infections are different. The mixed infections cause slight and weak effects compared to single infections. This is probably due to the antagonistic relationship between Potato Y virus and Cucumber mosaic virus and their effects on mean number of leaves, mean number of branches, mean height of plants, and mean stem circumference. Tomato plants' stems were (Elegro 106.42, 16.75, 103.58 cm, 4.84cm.; Local 94.42,15, 87.17 cm, 4.59 cm, respectively). Consequently, the timing of mixed infection playsarole in appearance, development and effect on other viruses.

A Survey of Pepper Mild Mottle and Cucumber Mosaic Viruses on Pepper Crop in the Syrian Coast andTheir Transmissionin the Field through Seeds

A field survey of Pepper mild mottle (PMMV) and Cucumber mosaic (CMV) Viruses was conducted in some plantation areas in Tartous and Lattakia Provinces. A total of 1278 samples (782 from Tartous and 505 from Lattakia) were collected. Results of Tissue Blot Immunobinding Assay showed the presence of PMMV in 0.39% and CMV in 11.42% in the collected samples. The percentage of CMV varied in Tartous and Lattakia Provinces. In this study, PMMV was not recorded in Lattakia, whereas it was recorded in Tartous in a small percentage (0.64%). Using Tissue Blot Immunobinding Assay, the collected seeds from the infected pepper fruits from Tartous fields showed the transmission of PPMV throughseeds in a ratio of 0.70% to 0.87% according to seed resources, whereas CMV was transmitted in a high percentage of 2.81% to 7.98% according to seed resources. PPMV was not recorded in leaf samples or in seeds taken from Blozah District in TartousProvince.

Effect of treatment of the tomato seeds with strains of PGPR for inducing systemic resistance against cucumber mosaic virus in green house

The study was conducted to evaluate the efficiency of Pseudomonas chlororaphis MA342, Serratia plymuthica HRO-C48K, Bacillus subtillis B2g, B. subtillis FZB27 to induce systemic resistance in Tomato plants against Cucumber mosaic virus (CMV) under greenhouse conditions. Tomato seeds submerged in suspension of Pseudomonas chlororaphis MA342, Serratia plymuthica HRO-C48, Bacillus subtillis B2g and B. subtillis FZB27 9×109cfu . plants emerged from these seed were inoculated with CMV after 10 days of planting. The time of beginning symptoms was recorded, Disease incidence, disease severity, area under disease progress curve AUDPC, progress of infection disease degrees during the study period were calculated using virtual symptoms . pyroxidas enzyme activity was determined, Some growth parameters such as Plant height, foliage fresh weight, root fresh weight , foliage dry weight, root dry weight were observed after 30 DAI. Results of this study showed that seed treatment with Pseudomonas chlororaphis MA342, Serratia .plymuthica HRO-C48, Bacillus subtillis B2g, B. subtillis FZB27 significantly decreased the diseases incidence on treated and inculated plants which ranged between 40% - 66.66% ,compared with un treated and inculated control 93.33% Without the presence of significant differences between the bacterial treatments. significantly decreased the diseases severity on treated plants which ranged between 45.53 %- 62.2% compared with inculated and un treated control 88.86% .Without the presence of significant differences between the bacterial treatments. Peroxidas activity on treated plants increased by Compared with untreated plants. Seed treatments with bacteria significantly increased the plant growth. The plant height , fresh and dry weight of foliage, fresh and dry weight of root on treated plants were significantly higher than those of inculated and un-treated plants according to LSD 5%.where bacteria reduced the rate of stunting and the rate of decline mild and dry weight of foliage and mild and dry weight of the root occurring due to infection with the Cucumber mosaic virus (CMV).

Evaluation the Effectiveness the Inoculation with Plant Growth Promoting Rhizobacteria on Reduction of Virus Effect for Cucumber Mosaic Virus on Some Growth Parameters Tomato Plants

This study aimed at studying the effect of using three species of bacteria (PGPR) Azotobacter chroococcum Bacillus megaterium and Frateuria aurantia in three inoculation manner ( seeds, shoots & seed+shoots) on suppressed the effect of Cucumber mosaic virus (CMV) on tomato plants (pots), Some growth parameters such as plant height, number of leaves on plant, foliage fresh weight, root fresh weight were observed after 60 days. The experiment carried out in 2016 in a greenhouse in Tartus.

Effect of some PGPR species on the growth, production of pepper and (CMV) infection

This study is aimed at studying the effect of using four species of bacteria Plant Growth Promotion Rhizobacteria (PGPR) Azotobacter chroococcum, Rhizobium leguminosarum, Bacillus megaterium and Frateuriaaurantia on the growth, yield and reducing the effect of Cucumber mosaic virus(CMV) on pepper plants in a greenhouse experiment. The observed growth parameters were: plant height, foliage fresh weight, root fresh weight, fruit weight in a green house expirment in Tartous in the season 2016/2017.