This journal provides immediate access to some articles. Volume 52(1); July 1973 Articles Abscission: Support for a Role of Ethylene Modification of Auxin Transport PMCID: PMC366427 Characterization of Plasma Membrane-associated Adenosine Triphosphase Activity of Oat Roots PMCID: PMC366428 An Arginyl-Transfer Ribonucleic Acid Protein Transferase from Cereal Embryos PMCID: PMC366429 Metabolism of Separated Leaf Cells: III. Effects of Calcium and Ammonium on Product Distribution During Photosynthesis with Cotton Cells PMCID: PMC366430 Promotion of Seed Germination by Cyanide PMCID: PMC366431 Response of Carbon Dioxide Fixation to Water Stress: Parallel Measurements on Isolated Chloroplasts and Intact Spinach Leaves PMCID: PMC366432 The Effect on Net Photosynthesis of Pedigree Selection for Low and High Rates of Photorespiration in Tobacco PMCID: PMC366433 Ethylene Production and Respiratory Behavior of the rin Tomato Mutant PMCID: PMC366434 Comparative Studies on Tobacco Pith and Sweet Potato Root Isoperoxidases in Relation to Injury, Indoleacetic Acid, and Ethylene Effects PMCID: PMC366435 Enzymes of Phospholipid Metabolism in the Endoplasmic Reticulum of Castor Bean Endosperm PMCID: PMC366436 Circular Dichroism Spectra of Granal and Agranal Chloroplasts of Maize PMCID: PMC366437 Optical Parameters of Leaves of 30 Plant Species PMCID: PMC366438 Properties of an Aminotransferase of Pea (Pisum sativum L.) PMCID: PMC366439 Some Aspects of the Regulation of Arginine Biosynthesis in Soybean Cell Cultures PMCID: PMC366440 Growth of Plants in Solution Culture Containing Low Levels of Chromium PMCID: PMC366441 Comparative Effects of Hydrogen Ions, Carbon Dioxide, and Auxin on Pea Stem Segment Elongation PMCID: PMC366442 Application of Chemicals in Organic Solvents to Dry Seeds PMCID: PMC366443 An Excellent Source of Vegetative Buds for Use in Plant Hormone Studies on Apical Dominance PMCID: PMC366444 Flow of Chromium into Apple Fruit during Development PMCID: PMC366445 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||