A Method for Constructing Unmarked Deletion Mutants of Pseudomonas plecoglossicida NyZ12 Constructed the Cre/loxp Recombination Inducible Excision System and Obtained Marker-free Transgenic Apple Plants Construction a Metabolic Engineering Strain to Produce 1,3-propanediol from Klebsiella pneumoniae by ldhA Gene Deletion Mutation The Research of Genome Editing Construction of Genetic Recombination for Sea Cucumber Lysozyme in Bacillus subtilis Integrative Expression of Stichopus japonicus Lysozyme Gene in Bacillus subtilis Studies on the nasal epithelium toxicity of adjuvants and recombination hirudin (rHV2) nasal spary Analysis of key virulent factors by pseudo-recombination between Cucumber mosaic virus M and Fny strains Primary Mapping of QTL for Dehydration Rate of Maize Kernal after Physiologyical Maturing Constructed the Cre/loxp Recombination Inducible Excision System and Obtained Marker-free Transgenic Apple Plants DEVELOPMENT OF MARKER-FREE TRANSGENIC POTATO WITH AtMYB12 GENE BY Cre/lox SITE-SPECIFIC RECOMBINATION SYSTEM Genetic Analyses of Meiotic Recombination in Arabidopsis Polycomb-group histone methyltransferase CLF is required for proper somatic recombination in Arabidopsis Construction and Analysis of Vip3A Insecticidal Protein Random Recombination Library Rapid Deletion of nmpC Gene in Escherichia coli Chromosome The Effect on Phosphatidylserine Biosynthesis of Gene sdaA,sdaB,pgpB in Escherichia coli Review of Marker-free Transgenic Crop Cloning L-lactate Dehydrogenase Gene from Pediococcus acidilactici and Overexpression of It in Recombination Strain E.coli JH12 Plant mitochondrial genome peculiarities evolving in the earliest vascular plant lineages EFFECTS OF AN INDUCED SATELLITE RNA OF CUCUMBER MOSAIC VIRUS ON THE HOST REACTIONS OF ITS HELPER VIRUS AND VIRUS LOADING IN SYSTEMIC HOSTS Study on the enhancement and mechanism of organic-inorganic compound fertilizer on inorganic fertilizer utilization III. Effect of potassium sulfate combined with organic material on maize yield and K fertilizer utilization Induction and Improvement of Cytoplasmic Male Sterility in Oilseed Brassica by Somatic Hybridization High-throughput Binary Vectors for Plant Gene Function Analysis Construction of a Plant Transformation-ready Expression cDNA Library for Thellungiella halophila Using Recombination Cloning The Integration and Expression of ββ Mutant Gene of Human Liver Metallothionein in Synechocystis sp. PCC 6803 by Homology Recombination Recombination and Mixed Infection of Two Distinct Begomoviruses in Tomato RESEARCH PROGRESS ON HOMOLOGOUS RECOMBINATION REPAIR MECHANISM IN Deinococcus radiodurans Effects of ozone fumigation and depressed solar irradiance on soil microbial functional diversity in winter wheat rhizosphere Construction and Application of Efficient Ac-Ds Transposon Tagging Vectors in Rice The Role of Viral Infection in Inducing Variability in Virus-Free Progeny in Tomato Genetic Molecular Linkage Map Construction and Genome Analysis of Rice Doubled Haploid Population The Knockout of Gene ptsG of Recombinant Escherichia coli Producing D-lactic Acid and the Simultaneous Fermentation of Mixed Sugars The Influence of Knockout of menA Gene in Escherichia coli on the Accumulation of CoQ The study on secondary culturation after the protoplasts of Arabidopsis thaliana broken by ultrasonic Research Progress on Plant Expression Vectors for Gateway Cloning Technology Cloning and Prokaryotic Expression of Alpha-momorcharin Gene Biosynthesis of Chlorophyll Regulates Reconstruction of Thylakoid Membrane in Cyanobacterium Synechocystis sp. PCC 6803 Expression of Fructose Valine Oxidase in Sf9 Cells Phylogenetic utility of LEAFY gene in Cinnamomum (Lauraceae): Gene duplication and polymerase chain reaction-mediated recombination Recombinase-mediated Gene Stacking as a Transformation Operating System Foreign Protein Expression in Chloroplast Transformation of Phaeodactylum tricornutum Complete genomic sequences-based recombination and phylogenetic analysis of Cucumber green mottle mosaic virus Man-Made Triticeae Genomes by Chromosome Recombination——Ⅱ.Screening for Hapoid Triticale Clones with High Anther Culture Efficiency SOME PROBLEMS INVOLVED IN THE CROSS BETWEEN OCTOPLOID AND HEXAPLOID FORMS OF TRITICALE MAN MADE TRITICEAE GENOMES BY CHROMOSOME RECOMBINATION Ⅰ.PRELIMINARY EXPERIMENTS AND POSSIBILITIES Sequencing and analysis of the 3′-terminal genome of Pennisetum mosaic virus isolates from maize plants in Chengde Origin of SARS from accelerated evolution of a virus by combined pollution