Cloning and Sequence Anaylisis of δ-OAT Gene from Erianthus arundinaceus Chromosome Genetic Analysis of F1 Hybrids between Saccharum officinarum and Erianthus arundinaceus Based on GISH Isolation and Characterization of Disease Resistance Gene Analogs from Erianthus arundinaceus cDNA Cloning of Two House-keeping Genes from Erianthus arundinaceus and the application in cDNA microarray