The Morphological,Cytological and Molecular Identifications of Allopolyploids of Chinese Cabbage–Cauliflower Analysis of Gene Expression Variation by cDNA-SCoT Technique at the Early Period of Arachis Artificial Allopolypoidy Evolution Genome Dosage Effect on Three Kinds of Isozyme Expression Patterns in Cucumis Genome Dosage Effect on Three Kinds of Isozyme Expression Patterns in Cucumis Application of BSP Method to the Methylation Detection of BZIP17 Homologous Genes in Allotetraploid Raphanobrassica and Its Parents Sequence Elimination and the Genomic Evolution of Allopolyploid Plants Crossbreeding of Melilotoides ruthenicus and Medicago sativa Morphological and Physiological Characteristics in Cucumis Allopolyploids with Different Ploidy Level Genomic evolutionary changes in Aegilops allopolyploids revealed by ISSR markers Evolution of Internal Transcribed Spacer Region of Nuclear Ribosomal DNA in Allopolyploids of Aegilops Preliminary studies on sequence elimination of reciprocal allotetraploids from Cucumis hystrix and C. sativus Microsatellite Variation in Synthetic Hexaploid Wheat A New Strategy of Rice Breeding in the 21st Century Ⅱ.Searching a New Pathway of Rice Breeding by Utilization of Double Heterosis of Wide Cross and Polyploidization Applications of Wide Hybridization and Allopolyploidization in Rice Breeding