Life Sciences Commons^™

Brown Rot And Collar Rot Of Citrus, W P. Cass Smith

Journal of the Department of Agriculture, Western Australia, Series 3

Plant disease

Brown rot is a serious disease of citrus, which fortunately has proved to be readily controllable. It attacks both leaves and fruits causing partial or complete defoliation, and a rather characteristic fruit rot. The disease may also affect the bark of citrus trees in the basal trunk region resulting in "collar rot," or as it is sometimes called, brown rot gummosis. This phase of the disease will be referred to later.

Breeding Cereal Crops For The Control Of Disease, H. R. Rosen

Journal of the Arkansas Academy of Science

No abstract provided.

Lack Of Effect Of Plant Growth-Regulators On The Action Of Alpha-Amylase Secreted By Virus Tumor Tissue, M. K. Brakke, L. G. Nickell

Department of Plant Pathology: Faculty Publications

This report deals with the effect of certain synthetic plant growth-regulators on the activity of alpha-amylase (1) secreted by virus tumor tissue grown in vitro. Previous studies have lacked adequately controlled conditions and have been carried out with enzyme preparations obtained through the usual methods of destruction of cells. In this particular study (a) the assay employed to measure enzyme activity includes control of pH and temperature and (b) this enzyme, being secreted, is not subject to the drastic preparative procedures involving destruction of cellular structure usually necessary to obtain enzymes.

Virus Diseases Of Cereal Crops In South Dakota, J.T. Slykhuis

Agricultural Experiment Station Technical Bulletins (1939-2011)

Virus diseases of wheat, oats and barley have been reported from various parts of the world during the last three decades. In some instances viruses have proven be the real causes diseases formerly attributed to other agents. The earliest reports of a virus disease of wheat concerned a mosaicrosette disease first observed in southeastern Illinois in 1919. The disease caused by a soil-borne virus was later found in a number of localities in the eastern half of the United States, but to date it has not been reported west of the Missouri River. However, other mosaic disease of wheat have …