Explain the procedures used for identification of a plant virus. Write notes on the following: (a) Extraction medium (b) Clarification (c) Storage of virus inoculum (d) Plant virus purification...

Explain the procedures used for identification of a plant virus. Write notes on the following:

(a) Extraction medium (b) Clarification (c) Storage of virus inoculum (d) Plant virus purification Describe the following symptoms caused by plant viruses:

(a) Ring spotting (c) Leaf roll