Plants can be made disease-resistant by:

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(A) Plant breeding is the purposeful manipulation of plant species in order to create desired plant types that are better suited for cultivation,give

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Breeding with their wild relatives

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(A) Plant breeding is the purposeful manipulation of plant species in order to create desired plant types that are better suited for cultivation,give better yields,and are disease-resistant.One of the most effective methods to introduce disease resistance is by breeding cultivated crops with their wild relatives,which often possess natural resistance genes against various pathogens.$Colchicine$ is used for polyploidy induction,while hormone and heat treatments are generally not used for developing disease resistance in plant breeding programs.

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