For many years, the principles of genetics have been applied to crop variety improvement with great success. Severa1 crop species, notably corn, wheat, and tomato, have been used as model genetic systems because of their central importance to food production. Until recently, virtually a11 progress in both breeding and model genetic systems has relied on a phenotypic assay of genotype. Because t...

In the last decade, the random amplified polymorphic DNA (RAPD) technique based on the polymerase chain reaction (PCR) has been one of the most commonly used molecular techniques to develop DNA markers. RAPD is a modification of the PCR in which a single, short and arbitrary oligonucleotide primer, able to anneal and prime at multiple locations throughout the genome, can produce a spectrum of a...