Field reaction of 25 red mottled bean ( Phaseolus vulgaris L.) genotypes to common bacterial blight [Xanthomonas campestris pv. phaseoli (Smith) Dye] was evaluated in Puerto Rico over 2 years. The average disease severity (percent leaf area with symptoms) was similar over years. The determinate red mottled genotypes had almost twice as much disease as indeterminate genotypes. Eight of the indet...

The localization of three carbohydrate antigens, Lex, Ley, and sialylated Lex-i, which are closely related to stage-specific embryonic antigen 1, in the lung of developing human embryos was investigated using specific monoclonal antibodies. In the 38-day-old embryo, when the primitive lung bud has appeared and developed into two lung sacs, only Ley antigen was specifically positive in the proli...

Abstract American sycamores ( Platanus occidentalis L.) are found in many ecosystems and planted urban landscapes worldwide. The trees highly susceptible to anthracnose canker pathogens, causing leaf blight branch dieback. On Ohio State University campus Columbus, Ohio, an sycamore was observed thrive among symptomatic sycamores. healthy tree, subsequently protected as cultivar ‘Davis,’ vegetat...

In many trees, a short photoperiod (SD) triggers substantial physiological adjustments necessary for over-wintering. We have used transgenic ethylene-insensitive birches (Betula pendula), which express the Arabidopsis ethylene receptor gene ETR1 carrying the dominant mutation etr1-1, to investigate the role of ethylene in SD-induced responses in the shoot apical meristem (SAM). Under SD, the et...

Wilcox, W. F. 1989. Influence of environment and inoculum density on the incidence of brown rot blossom blight of sour cherry. Phytopathology 79:530-534. When potted Montmorency sour cherry trees were inoculated in full Montmorency trees were inoculated with either 50, 500, or 5,000 bloom with 5,000 conidia/ml of Monilinia fructicola, placed into mist conidia/ ml of M. fructicola, placed into m...

Needle blight, caused by Passalora sequoiae (Mycosphaerellaceae, Ascomycota), is an economically significant disease that commonly affects Japanese cedar (Cryptomeria japonica) in Japan. With the increasing production of saplings as part reforestation efforts, there concern needle blight will become more prevalent nursery fields. However, when visually inspected, this sometimes misdiagnosed oth...

‘Stevens’ cranberry (Vaccinium macrocarpon Ait.) terminal bud freezing stress resistance was assessed by nonlinear regression utilizing relative scoring of the post-thaw bud growth and development based on defi ned bud stages 2 weeks following controlled freezing tests. Bud stages tested were chosen based on a phenology profi le from each sampling date throughout the spring season. Previous yea...