Name any three factors for which crop variety improvement is done and explain each of them.

The factors for which crop variety improvement is done are :
(i) To develop varieties with produce of better quality; considerations of crop produce varies from crop to crop, like baking quality in wheat, protein quality in pulses, oil quality in oilseed crops and shelf-life of fruit and vegetable..
(ii) To develop varieties with wider adaptability, so that crop production under different environmental conditions can be undertaken.
(iii) To develop varieties with desirable agronomic characteristics; like dwarfness in cereals so that less nutrients are consumed, and tallness and profuse branching in case of fodder crops.