Drought-resistance Identification of Dongxiang Common Wild Rice (Oryza rufipogon Griff.) in Whole Growth Period Analysis of Quantitative Trait Loci for Resistance to Brown Planthopper in Dongxiang Wild Rice (Oryza rufipogon Griff.) Cloning and Expression Analysis of Retrotransposon Reverse Transcriptase in Introgression Lines from Dongxiang Wild Rice Cytological Studies of Male Gametogenesis and Development in the Reciprocal Interspecific Hybrid F1 of Dongxiang Wild Rice (Oryza rufipogon) and Oryza sativa Index screening and comprehensive evaluation of phenotypic traits of low nitrogen tolerance using BILs population derived from Dongxiang wild rice COMPREHENSIVE APPRAISAL OF DROUGHT RESISTANCE OF DONGXIANG WILD RICE (Oryza rufipogon Griff.) BIL POPULATION AT BOOTING STAGE Investigation Based on cDNA-AFLP Approach for Differential Expressed Genes Responding to Drought Resistance in Dongxiang Wild Rice Cytological and SSR Analysis on Cold tolerant Gene Introgression Lines from Dongxiang Wild Rice Analysis of Differential Expression Genes in Dongxiang Wild Rice and Its Introgression Lines under Phosphorus-deficiency Stress DNA Methylation Level and Pattern Changes in Cold Tolerance Introgression Lines Derived from Oryza rufipogon Griff. Genetic Analysis of Cold Tolerance at the Seedling Stage in Dongxiang Wild Rice (Oryza rufipogon)