Question

Which among the following is a method for obtaining an improved crop variety?

• A. Using more fertilisers
• B. Increasing soil salinity
• C. Excessive irrigation
• D. Hybridisation

Answer 1

The correct option is D Hybridisation

$\bullet$ Crop variety can be improved by hybridisation. It involves crossing between genetically dissimilar plants to produce plants with superior traits(characters).
$\bullet$ Crops can also be improved by using genetic engineering in which the DNA of the plant is altered to get the desired characters. This technique aims at specific and targeted changes in the plants.
$\bullet$ Using more fertilisers can improve the total yield of the crops, but cannot give the desired characters.
$\bullet$ Increasing salinity of the soil and excessive irrigation will actually make the land uncultivable.