Horticultural Reviews, Volume 44
CHILLING INJURY IN TOMATO FRUIT 277 Wang, C.Y., and D.O. Adams. 1980. Ethylene production by chilled cucumbersCucumis sativusL ...
278 P. BISWAS ET AL. Zhou, H., S. Lurie, R. Ben-Arie, L. Dong, S. Burd, A. Weksler, and A. Lers. 2001. Inter- mittent warming of ...
6 Oomycete Diseases of Cucurbits: History, Significance, and Management Mohammad Babadoost Department of Crop Sciences, Universi ...
280 M. BABADOOST Pseudoperonospora cubensiscan infect cucurbit plants at all ages. Infection is limited to leaves. Symptoms of d ...
OOMYCETE DISEASES OF CUCURBITS 281 C.Pythium Diseases 1 .Symptoms 2 .Pathogen Biology 3 .Host Range 4 .Disease Cycle and Epide ...
282 M. BABADOOST imbalances, low oxygen, atmospheric pollutants, pesticide damages, and genetic abnormalities. II. OOMYCETES A. ...
OOMYCETE DISEASES OF CUCURBITS 283 Some species of terrestrial oomycetes are plant pathogens (Kamoun 2003), which are among th ...
284 M. BABADOOST Composition of the cell wall is an important characteristic that has been used to separate oomycetes from true ...
OOMYCETE DISEASES OF CUCURBITS 285 of some algae, a fact that links the oomycetes to the chrysophyte algae. Reports suggest th ...
286 M. BABADOOST Aphanomycesare destructive pathogens of important crops such as peas, radishes, and sugar beets. Sporangiophore ...
OOMYCETE DISEASES OF CUCURBITS 287 Infection of plants by Peronosporales have been studied extensively, especially the genusPh ...
288 M. BABADOOST Orsomando et al. 2001; Fellbrich et al. 2002; Gaulin et al. 2002; Qutob et al. 2002). Some of these effectors i ...
OOMYCETE DISEASES OF CUCURBITS 289 Fig. 6.1. Devastation in a pumpkin field caused byPhytophthora capsici.Courtesyof Christine ...
290 M. BABADOOST expression or after soil is saturated with excessive rain or irrigation. The stems of infected plants turn ligh ...
OOMYCETE DISEASES OF CUCURBITS 291 The pathogen produces numerous sporangia on most infected fruit. Fruit infection progresses ...
292 M. BABADOOST sporangiophores), have long pedicels, and are spherical to elongate with a tapering base (Mchau and Coffey 1995 ...
(a) (c) (d) (b) Fig. 6.2. Reproductive structures of Phytophthora capsici : (a) oospores; (b) an oospore; (c) a sporangium relea ...
294 M. BABADOOST in wind-driven rain in the air. Sporangia may either germinate directly and infect the host plant or produce zo ...
OOMYCETE DISEASES OF CUCURBITS 295 diseases, thus well-drained fields should be selected and excessive irri- gation should be ...
296 M. BABADOOST contaminated water (e.g., pound with run-off water from infested fields), and fungicide application at weekly i ...
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