In plants, EMS usually causes point mutations, but loss of a chromosome segment or deletion can also occur (21). Therefore, EMS has the potential of altering loci of particular interest with inducing a great number of closely linked mutations. The use of radiation and chemical mutagens for inducing variation is well established. Although desired variation is often lacking, mutagens can be used to induce mutations and thereby generate genetic variation. Morphological mutations affecting different plant parts can be of enormous practical utility and many of them have been released directly as crop varieties (25).