High kernel moisture at harvest is one of the main restrictive factors affecting maize mechanical harvesting.Up to now,there has been little study about the genetic basis of kernel moisture in maize.In this research,252 F2 lines were derived from the cross of Li18(quick dehydration rate) and Chang 7-2(slow dehydration rate).20 low kernel moisture lines and 23 high kernel moisture lines were selected respectively to develop two DNA bulks based on the field phenotypic analysis.The polymorphism was screened ba...