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Hewings, Adrianna Delong Whitcomb 2014-12-15T23:52:14Z 2014-12-15T23:52:14Z 10000-01-01 1983 1983 Best Western Yellows (BWY) was described as a plant disease of viral etiology in 1960. The adjective 'western' was selected to distinguish BWY from beet yellows (BY), a previously described yellowing disease of sugarbeet. BWY virus (BWYV) is believed to be of greater economic importance than BY virus because it is more prevalent and more difficult to control. Two broad objectives were defined for this research: (1) characterization of BWYV using current physiochemical techniques and (2) the determination of the effect of different doses of virus on hosts of BWYV. Comparative purification of two luteoviruses (an isolate of barley yellow dwarf virus (BYDV) and from BWYV) revealed that the titer of BYDV peaked sharply in roots 10-14 days after inoculation whereas BWYV yields were consistently high from shoots harvested from 10 to more than 20 days after inoculation. Purified BYDV and BWYV had A260/280 ratios of 1.89 and 1.65 respectively. Made available in DSpace on 2014-12-15T23:52:14Z (GMT). No. of bitstreams: 1 8324572.pdf: 4153797 bytes, checksum: 5bca080799606d9d207f2182248cf1bc (MD5) Previous issue date: 1983 Embargo set by: Seth Robbins for item 70755 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 147 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1983. http://hdl.handle.net/2142/70589 (UMI)AAI8324572 Agriculture, Plant Pathology Purification, Characterization, Elisa Optimization and Dosage Effects of Beet Western Yellows Virus text Plant Pathology Plant Pathology University of Illinois at Urbana-Champaign Dissertation Ph.D.