This journal provides immediate access to some articles. Volume 29(3); May 1954 Articles The Growth and Inorganic Nutrition of Scenedesmus obliquus in Mass Culture. PMCID: PMC540499 Some Effects of Deuterium Oxide on the Quinone Hill Reaction of Chlorella pyrenoidosa Chick. PMCID: PMC540500 The Interrelation between CO2 Metabolism and Photoperiodism in Kalanchoë. PMCID: PMC540501 The Absorption of Inorganic Ions by Chlorella pyrenoidosa. PMCID: PMC540502 The Influence of Hydrogen Ion Concentration on Cation Absorption by Barley Roots. PMCID: PMC540503 On the Biosynthesis of Carotenoids. PMCID: PMC540504 Causes of Injury to Flooded Tobacco Plants. PMCID: PMC540505 Subcooling and Ice Nucleation in Lemons. PMCID: PMC540506 The Relative Sensitivity of Xanthium Leaves of Different Ages to Photoperiodic Induction. PMCID: PMC540507 Carbohydrate Metabolism and Oxalic Acid Synthesis by Botrytis cinerea. PMCID: PMC540508 Nature and Distribution of Glycolic Acid Oxidase in Plants. PMCID: PMC540509 The Oxidation of Reduced Diphosphopyridine Nucleotide by an Ascorbate System from Cucumber. PMCID: PMC540510 The Proteins of Green Leaves. VI. Centrifugal Fractionation of Tobacco Leaf Homogenates and Some Properties of Isolated Chloroplasts. PMCID: PMC540511 The Role of Vitamins and Micronutrient Elements in the Nutrition of the Apical Meristem of Pea Roots. PMCID: PMC540512 Isolation of Carbon-14-labeled Sedoheptulose and Other Products from Sedum spectabile. PMCID: PMC540513 The Effect of Auxin on the Flowering Behaviour of Wintex Barley and Petkus Rye. PMCID: PMC540514 Nomenclature of Chemical Plant Regulators: Report by a Committee of the American Society of Plant Physiologists PMCID: PMC540520 News and Notes PMCID: PMC540521 Brief Papers: The Electrophoretic Behavior of Lignin. PMCID: PMC540515 Diphosphopyridine Nucleotide-Nitrate Reductase from Soybean Nodules. PMCID: PMC540516 Possible Interaction between Light-dark Cycles and Endogenous Daily Rhythms on the Growth of Tomato Plants. PMCID: PMC540517 Metabolism of 2,4-Dichlorophenoxyacetic Acid. III. Metabolism and Persistence in Dormant Plant Tissue. PMCID: PMC540518 The Effect of Light Intensity on Photosynthetic Rate in Scotch Pine. PMCID: PMC540519 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||