This journal provides immediate access to some articles. Volume 27(1); January 1952 Articles The Amino Acid Composition and Distribution of N15 in Soybean Root Nodules Supplied N15-Enriched N2 PMCID: PMC540300 The Behavior of Isocitric Acid in Excised Leaves of Bryophyllum Calycinum During Culture in Alternating Light and Darkness PMCID: PMC540301 Investigation on Injury to Plants from Air Pollution in the Los Angeles Area PMCID: PMC540302 The Action Spectrum for the Photochemical Evolution of Oxygen by Isolated Chloroplasts PMCID: PMC540303 Relationships of Certain Nutrients, Metabolites, and Inhibitors to Growth in the Avena Coleoptile PMCID: PMC540304 An Improved Electrical Conductivity Method for Accurately Following Changes in the Respiratory Quotient of a Single Biological Sample PMCID: PMC540305 Influence of Storage Temperature on Carotene, Total Carotenoids and Ascorbic Acid Content of Sweetpotatoes PMCID: PMC540306 Some Factors Affecting Nectar Secretion in Red Clover PMCID: PMC540307 Studies in Plant Carbonic Anhydrase. II. Kinetic Studies PMCID: PMC540308 Physiological and Morphological Responses of Barley to 2,4-Dichlorophenoxyacetic Acid PMCID: PMC540309 The Effect of Preharvest Foliar Sprays of Maleic Hydrazide on Sprout Inhibition and Storage Quality of Potatoes PMCID: PMC540310 The Absorption and Translocation Of 2,4-Dichlorophenoxyacetic Acid by Bean Plants PMCID: PMC540311 Brittleness and Other Responses of Corn to 2,4-Dichlorophenoxyacetic Acid PMCID: PMC540312 Nitrogen and Amino Acids in Normal, Habituated, and Bacteria-Free Crown Gall Tumor Tissue Cultures of Grape PMCID: PMC540313 Stimulation of Seedling Growth by Seed Treatments with N-Phenyl Succinimide Derivatives PMCID: PMC540314 Percentage of Carbohydrates in Kernels of Station Reid Yellow Dent Corn at Several Stages of Development PMCID: PMC540315 Ionic Accumulation in Citrus as Influenced by Rootstock and Scion and Concentration of Salts and Boron in the Substrate PMCID: PMC540316 Brief Papers: Iron-Containing Frit as a Nutriculture Medium PMCID: PMC540317 The Influence of the Green Mesophyll in Stomatal Movement PMCID: PMC540318 Albinism Induced by Substituted Benzoic Acids PMCID: PMC540319 The Hill Reaction: Development of Chloroplast Activity During Greening of Etiolated Barley Leaves PMCID: PMC540320 Note Notes PMCID: PMC540321 Correction ERRATA PMCID: PMC540298 Corrects: MORPHOLOGICAL AND PHYSIOLOGICAL RESPONSES OF CARNATION AND TOMATO TO ORGANIC PHOSPHORUS INSECTICIDES AND INORGANIC SOIL PHOSPHORUS . Plant Physiol. 1951 July; 26(3): 502–524. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||