Answer:
The
common objectives of varietal improvement are
(i) Improved yield An introduction to High Yielding Varieties
(HYV) to improve the productivity of economic produce.
(ii) Better quality The better quality product are
being introduced in market due to competition. Wheat with better baking
quality, pulses with high protein quality and preserving quality of fruits and
vegetables, etc., are consider better now a days. (2)
(iii) Biotic and abiotic resistance Various biotic
and abiotic factors harm crop.
Developed varieties which have resistance against
these disease can bring significant improvement in crop production.
(iv) Early uniform maturity It makes harvesting
process easy and reduces the loss of product during harvesting long duration
crops reduce the cost of crops. (2)
(v) Desirable agronomic trait Desirable traits are
tallness high tailoring, profuse branching for fodder crops while darkness,
early maturation and high productivity are desirable characters for cereal
crops.
(vi) Wider adaptability Developing varieties with
wider adaptation will help on stabilising the crop production under different
environmental condition. (1)
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