American Phytopathological Society Board & Staff. VIEW ABSTRACT | VIEW ARTICLE
Obituary
Clyde C. Allison, 1905-1990. C. Wayne Ellett and Lansing E. Williams. Page 1267. VIEW ABSTRACT | VIEW ARTICLE
Obituary
Willard Kendall Wynn, Jr., 1932-1989. S. M. McCarter and B. G. Tweedy. Page 1268. VIEW ABSTRACT | VIEW ARTICLE
Special Topics
Variation in Disease Severity in the Lodgepole Pine-Western Gall Rust Pathosystem. B. J. van der Kamp, D. E. N. Tait. Pages 1269-1277. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Isolate Characteristics and Epidemic Components of Leptosphaerulina Leaf Spots on Alfalfa and White Clover. Ocen Modesto Olanya, C. Lee Campbell. Pages 1278-1282. VIEW ABSTRACT | VIEW ARTICLE
Postharvest Pathology and Mycotoxins
Pathogenesis in Aspergillus Ear Rot of Maize: Aflatoxin B1 Levels in Grains Around Wound-Inoculation Sites. M. G. Smart, O. L. Shotwell, and R. W. Caldwell. Pages 1283-1286. VIEW ABSTRACT | VIEW ARTICLE
Postharvest Pathology and Mycotoxins
Pathogenesis in Aspergillus Ear Rot of Maize: Light Microscopy of Fungal Spread from Wounds. M. G. Smart, D. T. Wicklow, and R. W. Caldwell. Pages 1287-1294. VIEW ABSTRACT | VIEW ARTICLE
Physiology and Biochemistry
Activity, Isozyme Pattern, and Cellular Localization of Peroxidase as Related to Systemic Resistance of Tobacco to Blue Mold (Peronospora tabacina) and to Tobacco Mosaic Virus. X. S. Ye, S. Q. Pan, and J. Kuć.. Pages 1295-1299. VIEW ABSTRACT | VIEW ARTICLE
Physiology and Biochemistry
Analysis of Photosynthesis in Resistant and Susceptible Alfalfa Clones Infected with Verticillium albo-atrum. B. W. Pennypacker, D. P. Knievel, K. T. Leath, E. J. Pell, and R. R. Hill, Jr.. Pages 1300-1306. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Population Dynamics of Pseudomonas cepacia in the Pea Spermosphere in Relation to Biocontrol of Pythium. J. L. Parke. Pages 1307-1311. VIEW ABSTRACT | VIEW ARTICLE
Special Topics
Restriction Fragment Length Polymorphisms in the Nuclear Ribosomal DNA of Four Laccaria spp.: L. bicolor, L. laccata, L. proxima, and L. amethystina. M. Gardes, J. A. Fortin, G. M. Mueller, and B. R. Kropp. Pages 1312-1317. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Colonization of Rootlets of Alfalfa by Species of Pythium in Relation to Soil Moisture. J. G. Hancock, D. W. Grimes. Pages 1317-1322. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Effect of Ion Concentration and Sodium:Calcium Ratio of a Nutrient Solution on Phytophthora Root Rot of Tomato and Zoospore Motility and Viability of Phytophthora parasitica. N. Bouchibi, A. H. C. van Bruggen, and J. D. MacDonald. Pages 1323-1329. VIEW ABSTRACT | VIEW ARTICLE
Special Topics
A Nomenclature for Rhynchosporium secalis Pathotypes. S. B. Goodwin, R. W. Allard, and R. K. Webster. Pages 1330-1336. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Influence of Tillage Systems on Disease Intensity and Spatial Pattern of Septoria Leaf Blotch. W. Schuh. Pages 1337-1340. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Analysis of Epidemics of Leptosphaerulina Leaf Spots on Alfalfa and White Clover in Time and Space. O. M. Olanya, C. Lee Campbell. Pages 1341-1347. VIEW ABSTRACT | VIEW ARTICLE
Cytology and Histology
Cellular Responses of Pine Callus to Infection by Phytophthora cinnamomi. J. C. Jang, F. H. Tainter. Pages 1347-1352. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Etiology of Tomato Plant Decline in the California Desert. J. S. Gerik, J. E. Duffus, R. Perry, D. C. Stenger, and A. F. Van Maren. Pages 1352-1356. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Soil Matric Potential Effects on Changes in Wall Morphology, Germination, and Lysis of Oospores of Pythium ultimum. L. F. Johnson, P. Qian, and R. S. Ferriss. Pages 1357-1361. VIEW ABSTRACT | VIEW ARTICLE
Molecular Plant Pathology
DNA Base Sequence Homology in Rhizoctonia solani Kühn: Inter- and Intragroup Relatedness of Anastomosis Group-9. D. E. Carling, S. Kuninaga. Pages 1362-1364. VIEW ABSTRACT | VIEW ARTICLE
Resistance
Inheritance of Collar Rot Resistance in the Tomato Breeding Lines C1943 and NC EBR-2. Marisa Maiero, Timothy J Ng, and Thomas H. Barksdale. Pages 1365-1368. VIEW ABSTRACT | VIEW ARTICLE
Genetics
DNA Restriction Fragment Length Polymorphisms Among Mycosphaerella graminicola (Anamorph Septoria tritici) Isolates Collected from a Single Wheat Field. B. A. McDonald, J. P. Martinez. Pages 1368-1373. VIEW ABSTRACT | VIEW ARTICLE
Physiology and Biochemistry
Polygalacturonases Associated with Infection of Valencia Orange by Penicillium italicum. J. Hershenhorn, S. Manulis, and I. Barash. Pages 1374-1376. VIEW ABSTRACT | VIEW ARTICLE
Genetics
Selection of Virulence Phenotypes in a Heterogeneous, Asexual Population of Puccinia recondita f. sp. tritici. J. A. Kolmer. Pages 1377-1381. VIEW ABSTRACT | VIEW ARTICLE
Cytology and Histology
Correlations Between Cytologically Detected Plant-Fungal Interactions and Pathogenicity of Magnaporthe grisea Toward Weeping Lovegrass. Michèle C. Heath, Barbara Valent, Richard J. Howard, and Forrest G. Chumley. Pages 1382-1386. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Influence of Environment on Conidial Concentration of Alternaria porri in Air and on Purple Blotch Incidence on Onion. K. L. Everts, M. L. Lacy. Pages 1387-1391. VIEW ABSTRACT | VIEW ARTICLE
Genetics
DNA Content and Variation in Chromosome Number in Plant Cells Affected by Meloidogyne incognita and M. arenaria. R. J. Wiggers, J. L. Starr, H. J. Price. Pages 1391-1395. VIEW ABSTRACT | VIEW ARTICLE
Resistance
Use of Spatial Patterns and Density of Inoculum of Cylindrocladium crotalariae During Field Evaluation of Partially Resistant Peanut Genotypes. A. K. Culbreath, M. K. Beute, and J. C. Wynne. Pages 1395-1400. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Degradation of Wheat Streak Mosaic Virus Capsid Protein During Leaf Senescence. Myron K. Brakke, Rose N. Skopp, and L. C. Lane. Pages 1401-1405. VIEW ABSTRACT | VIEW ARTICLE
Cytology and Histology
Cytochemical Aspects of Chitin Breakdown During the Parasitic Action of a Trichoderma sp. on Fusarium oxysporum f. sp. radicis-lycopersici. Mohamed Chérif, Nicole Benhamou. Pages 1406-1414. VIEW ABSTRACT | VIEW ARTICLE
Genetics
Resistance to Fungicides and Antibiotics in Phytophthora parasitica: Genetic Nature and Use in Hybrid Determination. T. T. Chang, W. H. Ko. Pages 1414-1421. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Analysis and Quantification of Soybean Rust Epidemics from Seventy-Three Sequential Planting Experiments. X. B. Yang, M. H. Royer, A. T. Tschanz, and B. Y. Tsai. Pages 1421-1427. VIEW ABSTRACT | VIEW ARTICLE
Physiology and Biochemistry
Metabolites from Pseudomonas corrugata Elicit Phytoalexin Biosynthesis in White Clover. David L. Gustine, Robert T. Sherwood, Barton G. Moyer, and Felix L. Lukezic. Pages 1427-1432. VIEW ABSTRACT | VIEW ARTICLE
Molecular Plant Pathology
Detection and Partial Characterization of New Polypeptides in Peanut Cotyledons Associated with Early Stages of Infection by Aspergillus spp.. J. B. Szerszen, R. E. Pettit. Pages 1432-1438. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Path Coefficient Analysis of the Effect of Rainfall Variables on the Epidemiology of Phytophthora Blight of Pepper Caused by Phytophthora capsici. J. H. Bowers, R. M. Sonoda, and D. J. Mitchell. Pages 1439-1446. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Effect of Soil-Water Matric Potential and Periodic Flooding on Mortality of Pepper Caused by Phytophthora capsici. J. H. Bowers, D. J. Mitchell. Pages 1447-1450. VIEW ABSTRACT | VIEW ARTICLE
Resistance
Statistical Procedures for Assessment of Resistance in a Multiple Foliar Disease Complex of Peanut. W. F. Anderson, M. K. Beute, J. C. Wynne, and S. Wongkaew. Pages 1451-1459. VIEW ABSTRACT | VIEW ARTICLE
Genetics
Heterokaryosis and Vegetative Compatibility in Leptographium wageneri. P. J. Zambino, T. C. Harrington. Pages 1460-1469. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Initial Spread of Bean Rust Close to an Inoculated Bean Leaf. Donald E. Aylor, Francis J. Ferrandino. Pages 1469-1476. VIEW ABSTRACT | VIEW ARTICLE
