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THE CLONING AND SEQUENCING OF THE rDNA INTERNAL TRANSCRIBED SPACER 1 REGIONS OF CHINESE FIR EFFECT OF COATED UREA AND NON-COATED UREA ON GRAIN YIELD, N UPTAKE AND N DISTRIBUTION IN DIFFERENT PARTS OF MAIZE Phenotypic and Genotypic Identification of Powdery Mildew Resistance in 36 Pea Cultivars or Lines from Canada Isolation of a Mutant of Fer1 Gene, Acting Synergistically with the ARF8 Gene to Control Development of the Anther and Filament in Arabidopsis