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Crop Variety Improvement • It is the technique or the skill of selection of the best varieties of crops for various desirable characters and incorporating those characters into the crops of the next generation. Hybridization It is the technique of crossing between two genetically dissimilar plants to produce a plant of a new variety. The variety produced by using this technique is called a hybrid. Two ways of cross-breeding during hybridisation are The new varieties of crops obtained by hybridisation are called high- yielding varieties or HYV seeds. Production of HYV seeds has led to an increase in agricultural production, considerably reduced food shortage and generated more income in the agricultural sector. This is known as the Green Revolution. Examples of hybrid varieties are