נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Effect of microclimate on Leveillula taurica powdery mildew of sweet pepper
Year:
2007
Source of publication :
Phytopathology
Authors :
Brand, Michal
;
.
Elad, Yigal
;
.
Messika, Yoel
;
.
Rav David, Dalia
;
.
Volume :
97
Co-Authors:
Elad, Y., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel
Messika, Y., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel, Department of Plant Pathology and Microbiology, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Brand, M., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel, Department of Plant Pathology and Microbiology, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
David, D.R., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel
Sztejnberg, A., Department of Plant Pathology and Microbiology, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Facilitators :
From page:
813
To page:
824
(
Total pages:
12
)
Abstract:
Sweet pepper-Leveillula taurica microclimate relations were studied under controlled conditions and in commercial greenhouses. Conidial germination occurred at 10 to 37°C and was optimal at 20deg;C. Conidial viability declined as temperatures increased to 40°C for 6 h. Leaf colonization was optimal at 15 to 25°C. Severe leaf infections occurred at 15 to 20°C and conidiation was suppressed at 20 to 25°C. Highest germination rates were observed at 75 to 85% relative humidity (RH). Severity of leaf coverage by symptoms was high for plants which were subjected to longer periods of temperatures between 10 to 15°C and daytime RH between 85 to 95%, and positively correlated with nighttime RH. Disease severity was negatively correlated with lengthy periods of temperatures >25°C, day and night average temperatures, and average daytime RH. Conversely, leaf shedding was relatively high under conditions characterized by long periods of temperatures >20°C and <13°C, and positively correlated with average daytime temperatures and periods of RH <75%. Increasing nighttime temperatures by heating and daytime temperatures by closing the greenhouse side walls reduced disease in two commercial greenhouse experiments. A midseason shift from a cooler greenhouse climate to warm daytime climate halted epidemic development. Flower number and yield were reduced in infected crops. © 2007 The American Phytopathological Society.
Note:
Related Files :
Biomass
Capsicum annuum var. annuum
Erysiphales
Germ tube
Leveillula taurica
Show More
Related Content
More details
DOI :
10.1094/PHYTO-97-7-0813
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
30821
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:57
You may also be interested in
Scientific Publication
Effect of microclimate on Leveillula taurica powdery mildew of sweet pepper
97
Elad, Y., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel
Messika, Y., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel, Department of Plant Pathology and Microbiology, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Brand, M., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel, Department of Plant Pathology and Microbiology, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
David, D.R., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel
Sztejnberg, A., Department of Plant Pathology and Microbiology, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Effect of microclimate on Leveillula taurica powdery mildew of sweet pepper
Sweet pepper-Leveillula taurica microclimate relations were studied under controlled conditions and in commercial greenhouses. Conidial germination occurred at 10 to 37°C and was optimal at 20deg;C. Conidial viability declined as temperatures increased to 40°C for 6 h. Leaf colonization was optimal at 15 to 25°C. Severe leaf infections occurred at 15 to 20°C and conidiation was suppressed at 20 to 25°C. Highest germination rates were observed at 75 to 85% relative humidity (RH). Severity of leaf coverage by symptoms was high for plants which were subjected to longer periods of temperatures between 10 to 15°C and daytime RH between 85 to 95%, and positively correlated with nighttime RH. Disease severity was negatively correlated with lengthy periods of temperatures >25°C, day and night average temperatures, and average daytime RH. Conversely, leaf shedding was relatively high under conditions characterized by long periods of temperatures >20°C and <13°C, and positively correlated with average daytime temperatures and periods of RH <75%. Increasing nighttime temperatures by heating and daytime temperatures by closing the greenhouse side walls reduced disease in two commercial greenhouse experiments. A midseason shift from a cooler greenhouse climate to warm daytime climate halted epidemic development. Flower number and yield were reduced in infected crops. © 2007 The American Phytopathological Society.
Scientific Publication
You may also be interested in