Changes in Levels of Endogenous Plant Hormones During Floret Development in Wheat Genotypes of Different Spike Sizes Studies on the Nitrate Content of Different Pak-choi Genotypes Differences in Phosphorus Nutrition in Spring Wheat of Different Genotypes in Ningxia Province GENOTYPIC DIFFERENCE OF PHYSICOCHEMICAL PROPERTIES OF FRESH WAXY MAIZE GRAIN Variations of nitrogen nutrition efficiency in different rice germplasm types The difference of nitrogen uptake and utilization in waxy corn III.Genetic differences in nitrogen distribution and translocation Characteristics and genotypic difference of silicon accumulation and distribution in rice Genotypic difference in response to Fe deficiency of winter wheat with different phosphorus efficiency Difference and Its Mechanism in Tolerance to Low-Potassium between Liaomian 18 and NuCOTN99B at Seedling Stage Advances in plant nitrogen nutrient genotypic difference Genotypic Differences in Cellulose Accumulation of Cotton Fiber and Its Relationship with Fiber Strength Effect of cadmium stress on yield and yield components of different wheat genotypes Preliminary evaluation on tolerance to phosphorous deficiency of 32 cultivars of cut chrysanthemum GENOTYPIC DIFFERENCE OF NITROGEN USE EFFICIENCY IN RICE ITS MORPHOLOGICAL AND PHYSIOLOGICAL MECHANISMS Genotypic Differences in Formation of Kernel Number Per Spike and Analysis of Improvement Approaches in Wheat Genotypic Difference and the Classification in Response of Grain Weight to Nitrogen in Rice