The Effect of Spirulina platensis and Atonik Growth Regulator in Inducing the Resistance of Several Varieties of Grape Bushes Against the Helicopter leaf virus Grapevine fanleaf virus

Abstract

The study aimed to find out the effect of Spirulina platensis and growth regulator Atonik on the Grapevine fanleaf virus where it gave indicators of effect against the virus or induced the resistance of the plant against the virus. The treatment of the moss S. platensis + Atonik gave more efficiency in reducing the percentage and severity of the infection where it reached in the two qualities 48.88% and 51.55% respectively compared to the control treatment, which reached 100% in the rate of infection and in the severity of the infection 81.77%, The interference treatment between S. platensis + Atonik also gave the highest rate of peroxidase enzyme where the enzyme rate was 4.48 mg / protein compared to the proper comparison treatment in which the enzyme rate was 0.48 mg / protein, the treatment with S. platensis + Atonik moss in the characteristic of leaf area and chlorophyll scale gave the highest effect ratio (+) with 68.74 cm and 35.01 spad respectively