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Symptoms of plant diseases (Fig. 10 |
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Answer» Local symptoms are physiological or structural changes within a limited area of host tissue, leaf spot, cankers and galls. Systemic symptoms are those involving the reaction of a greater part or all of the plant,such as wilting ,yellowing and dwarfing The variety of symptoms, the internal and external expressions of disease, that result from any disease form the symptom complex, which, together with the accompanying signs, makes up the syndrome of the disease. Localsymptomsare physiological or structural changes within a limited area of host tissue, such as leaf spots, galls, and cankers. Systemicsymptomsare those involving the reaction of a greater part or all of theplant, such as wilting, yellowing, and dwarfing. some symptoms are:spots on leafs, curling of leaf, drying of plant roots, infection of roots etc |
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