Progress on Mapping and Cloning Genes for Leaf Architecture in Rice (Oryza sativa. L) Characterization and Fine Mapping of the ibf Mutant in Rice Expressional and Biochemical Characterization of Rice Disease Resistance Gene Xa3/Xa26 Family Characterization of Interspecific Hybrids Between Oryza sativa L. and Three Wild Rice Species of China by Genomic In Situ Hybridization Characterization and Use of Male Sterility in Hybrid Rice Breeding