Question

how crop variety improvement methods come to the rescue of farmers facing repeated crop failure ? Describe three factors for which they could do crop improvement. Which is the most common method of obtaining improved variety of crops? Explain briefly.

Answer 1

Explanation about :(a)  Higher yield(b) Improved quality(c) Biotic and abiotic resistance(d) Change in maturity duration(e) Desirable agronomic traits or any five traits relevent to it.
Detailed Answer: (i)  Higher Yield : To increase the productivity of crop per acre.(ii) Improved Quality : Quality considerations such as baking quality, protein quality, oil quality and preserving quality of crop products vary from crop to crop.(iii)  Crop production can go down due to biotic and abiotic stresses under different situations. Varieties resistant to these stresses can improve crop production.(iv) Change in Maturity Duration : The shorter the duration of the crop from sowing to harvesting, the more economical is the variety.(v) Wider Adaptability : Developing varieties for wider adaptability will help in stabiling the crop production under different environmental conditions.(vi) Desirable Agronomic Characteristics : Developing varieties of desired agronomic characters helps to give higher productivity.

Answer 2

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Crop Variety Improvement➫ The development of plants with better agronomic & disease resistant characters to increase the yeild per acre.

❱ The different strains should be able to show maximum productivity under any diverse condition.

❱ It can be done either by hybridisation or by introducing a gene. 

➧ The crop variety improvement required because:-
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❱ It reduces the cost of crop production.

❱ It allows the farmers to grow multiple crops in a year.

❱ It increase the productivity of the crop.

❱ To improves quality in the crop production.

❱ To change in maturity duration.

❱ It helps in stabilising the crop production under different environmental conditions.

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