Answer:
Hybridisation
refers to crossing between genetically dissimilar plants. These are of three
types
(i) Intervarietal (cross between two different varieties).
(1)
(ii) Interspecific (cross between two different species of
same genus). (1)
(iii) Intergeneric (cross between two different genera).
Thus, in plants breeding, intervarietal hybridisation is mostly used and
improved the
crop variety. Improved varieties are higher in yield and develop natural
resistance against diseases. (1)
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