Question

describe the mechanism of crop varitey improvement​

Answer 1

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HYBRIDIZATION - it is a process of crossing between two or more genetically dissimilar plants to produce a new variety with good properties of both the crops. ... GENETIC IMPROVEMENT-: In genetic improvement, genes of crops are modified so that desired properties are retained and undesirable properties are suppressed.

Answer 2

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A single variety of crop does not possess all the desirable characteristics. Thus, it is necessary to improve the crop variety. This is done to get better varieties of crops with the desired qualities. Two fundamental approaches are adopted to get the desirable characteristics in a single variety. These are:

• Hybridization
• Genetic engineering

Hybridisation is the crossing of two genetically dissimilar plants. It can be done between two species (interspecific), between two plants of same genera (intergeneric) and between different varieties of same species (intervarietal).

Genetic engineering: This helps to produce genetically modified crops. It is done by introducing a gene that would provide the desired characteristics.