To study the association between Fusarium root-rot resistance
(Fusarium solani f. sp. phaseoli) and economically inportant characteristics
of beans, 2259 lines each consisting of 30 plants were used.
The lines were randomly selected for root-rot reaction, but were
selected for differences in vigor and differences in plant and seed
pigments,...
Factors limiting effective extraction and purification of bean
yellow mosaic virus (BYMV) were investigated. Since the use of published
techniques for purifying BYMV resulted in low yields of partially
purified virus, an improved method for partial purification of this
virus was developed. The following treatments of infectious crude extract
decreased...
Benomyl-tolerant Botrytis cinerea was found in snap
bean fields throughout the Willamette Valley while no tolerant
isolates of Whetzelinia sclerotiorum were detected.
Thirty-five benomyl-tolerant isolates of B. cinerea had
slower radial growth rates than eighteen benomyl-sensitive
isolates. Sporulation of an aggressive tolerant isolate
was not stimulated when grown on benomyl-treated...
A survey of major bean (Phaseolus vulgaris) breeding programs and
seed producing areas in Idaho, Washington, and Oregon was conducted to
determine the occurrence of cucumber mosaic virus (CMV), recently reported
to be seedborne in beans. Some 259 plants, sampled from breeding
lines of diverse germplasm, were found by enzyme-linked...