Answer :
The term cultivar is used for the plant which must have vegetatively propagated (not grown from the seed) in order to maintain the genetic characteristics of parent plant
The Vegetative propagation is often used when there crop plants is either do not produce any seeds or when the seeds produced are not viable or are take of long dormancy. The method is relies on the use there pieces of vegetative plant parts and such as stems, leaves, or roots to perpetuate the the parent plants.
The main advantage of the vegetative propagation methods is that the new plants must contain the genetic material of the only one parent, so that they are essentially and clones of the parent plant.
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