Genetic Diversity Analysis Of Representative Maize Inbred By RAPD And Its Relation With Agronomic Characteristics

Heterotic groups were classified by cluster analysis with RAPDs based on 16 important maize inbreds. 12 primers: N01, N06, N11, N17, W05, W10, M03, M05, M06, X01, X04 and X07, selected from 60 candidate primers from N01-N20, M01-M20, W01-W10 and X01-X10 were used as polymorphic DNA markers for 16 maize inbred lines, cluster analysis by Nice method showed that 16maize inbreds could be placed in four groups with genetic distance from 0.103 to 0.431. The analysis revealed that the intervarietal genetic relationships of maize inbred were related to their pedigree of the parent. Meanwhile, genetic diversity of 16 maize inbreds was investigated. Eleven agronomic traits were measured on the genotypes in field experimental in 2002. Dendrograms were generated for genetic distance from the RAPD and mean .taxonomic distance from the agronomic traits data. Classification of all genotypes based on the two methods gave dissimilar results with correlation of 0.136 between the experiment demonstrated that RAPD analysis could reliably determine genetic relationships with a diverse array of maize inbreds. The current study indicated that it is practical to group maize inbred lines with RAPDs.