A great disadvantage of introduction as a method of crop improvement is the
-
A.
adaptation of introduced crop to a new area of cultivation -
B.
usefulness of an introduced crop as basis for a breeding programme -
C.
incorporation of the desirable characteristics of the introduced crop into the local corp -
D.
introduction of a new type of disease into a new area of cultivation -
E.
integration of the introduced variety into the agricultural production of a new area