Document Type

Thesis - Open Access

Award Date

1964

Degree Name

Master of Science (MS)

Department

Plant Pathology

Abstract

Brown spot of soybean, caused by Septoria glycines Hemmi, is distributed widely in North America, Europe, and Asia. It sometimes causes serious defoliation and reduction in yield. The extent of damage appears to vary primarily with the crop rotation system used and with the environmental conditions of the growing season. One reason for the inconsistency, among others, may have been the variation in the ability of the pathogen to parasitize the varieties. Since no report had come to the attention of the writer that the pathogen varied in this capacity , a study was undertaken to determine: a) the cultural and pathogenic characteristics of first, second, and third generation monospore cultures, and their parents. B) The influence of some environmental factors on disease development. C) The manner of spore germination and hyphal anastomosis. d) The host range of the pathogen.

Library of Congress Subject Headings

Plant diseases
Septoria -- Diseases

Description

Includes bibliographical references

Format

application/pdf

Number of Pages

53

Publisher

South Dakota State University

Share

COinS