Re: If someone studied the Cloning of Plants, what type of career would that be

Most people who clone plants for a living work in horticulture and practice 
grafting, tissue culture, rooting of cuttings, layering, or propagation via 
specialized structures such as bulbs, corms, and tubers. Among plants cloned are 
spring flower bulbs, such as tulips, daffodils and crocus and crops such as 
potatoes (specialized structures), most fruit and nut trees (grafting), many 
orchids and house plants (tissue culture) and carnations, poinsettias, and 
chrysanthemums (rooting of cuttings). There is an organization for plant 
propagators called the International Plant Propagators' Society.

I guess one of the biggest misconceptions is that such a large percentage of 
cultivated plants are cloned.

Reference

Hartmann, H.T. and Kester, D.E. 1983. Plant Propagation: Principles and 
Practices. Englewood Cliffs, NJ: Prentice-Hall.