Identification of New Rice Germplasms for Resistance to Bacterial Blight from Oryza meyeriana L. Comparative Study on the Structure Characteristics of the Leaf,Stem,Root of Yunnan Wild Rice Species Identification of Hybrid of Oryza sativa×O.meyeriana Using Genomic in situ Hybridization Identification and Comparison of diploid and Tetraploid Hybrids of Oryza sativa X O.meyeriana Cloning and Analysis on Full-length cDNA Sequence of Ubiquitin-conjugating Enzyme Gene from Oryza meyeriana Baill.