This journal provides immediate access to some articles. Volume 32(2); March 1957 Articles The Rest Period of Apricot Flower Buds as Described By a Regression of Time of Bloom on Temperature. PMCID: PMC540869 Studies on Tobacco Alkaloids. II. The Formation of Nicotine and Nornicotine in Tobacco Supplied with N15. PMCID: PMC540870 Embryo Dormancy of Pinus jeffreyi Murr. Seed as Affected by Temperature, Water Uptake, Stratification, and Seed Coat. PMCID: PMC540871 Metabolic Processes in Cytoplasmic Particles of the Avocado Fruit. III. The Operation of the Tricarboxylic Acid Cycle. PMCID: PMC540872 Aspects of Phosphorus Metabolism in the Cotton Plant. PMCID: PMC540873 Carbohydrate Distribution as Affected by Calcium Deficiency in Cotton. PMCID: PMC540874 Effect of 6-(Substituted)Thio- and Amino-Purines on Germination of Lettuce Seed. PMCID: PMC540875 Effects of Atmospheric Fluoride on the Respiration Rate of Bush Bean and Gladiolus Leaves. PMCID: PMC540876 The Isolation of Nuclei and Oxidative Particles from Viable Wheat Embryos. PMCID: PMC540877 Inductive Control of Indoleacetic Acid Oxidase Activity by Red and Near Infrared Light. PMCID: PMC540878 The Effect of 2,4-Dichlorophenoxyacetic Acid on Pathways of Glucose Catabolism in Higher Plants. PMCID: PMC540879 News and Notes PMCID: PMC540887 Brief Papers: Comparative Absorption of Cobalt-60 by Upper and Lower Epidermis of Leaves. PMCID: PMC540880 An Electronic Temperature Integrator for Plant Physiological Research PMCID: PMC540881 Studies of Maleic Hydrazide Interactions with Thiol Compounds. PMCID: PMC540882 Foliar Symptoms of Deficiencies of Inorganic Elements in Tomato. PMCID: PMC540883 Growth- and Enzyme-Inhibiting Properties of Bean Seed Extracts. PMCID: PMC540884 Photosynthesis in Gibberellin-Treated Leaves. PMCID: PMC540885 A Paper Chromatographic Method for the Detection of 3-Amino-1,2,4-Triazole in Plant Tissues. PMCID: PMC540886 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||