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Effect of soil temperature on disease development in melon plants infected by Monosporascus cannonballus
Year:
2002
Source of publication :
Plant Pathology
Authors :
כהן, רוני
;
.
Volume :
51
Co-Authors:
Pivonia, S., Arava Research and Development, Sapir 86825, Israel
Cohen, R., Department of Vegetable Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Kigel, J., Department of Agricultural Botany, Hebrew University of Jerusalem, Rehovot 76100, Israel
Katan, J., Department of Plant Pathology and Microbiology, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Facilitators :
From page:
472
To page:
479
(
Total pages:
8
)
Abstract:
The effect of soil temperature on melon collapse induced by Monosporascus cannonballus was studied in the laboratory and in the field. In the laboratory, ascospore germination and hyphal penetration into melon roots were enhanced by increasing the temperature from 20 to 32°C. The optimum temperature for mycelial growth of five isolates of M. cannonballus was 30°C. In the field, the effect of temperature was studied in experiments conducted during the winter and autumn cropping seasons from 1995 to 1998. Disease progress was much faster in the autumn than in the winter crop seasons. Disease incidence reached 100% in the three consecutive autumn seasons studied. In the winter seasons, however, planting date influenced disease incidence. Early planting, at the beginning of January, resulted in a low disease incidence (6-26%, 125 days after planting), whereas planting at the end of January resulted in higher disease incidence (72-88%, 95-119 days after planting). In plots in which the soil was artificially heated to 35°C during the winter season, disease incidence reached 85%, as in the autumn season. Plants grown during the winter in unheated soil, or in artificially heated soil disinfected with methyl bromide, did not collapse. Root colonization by the pathogen was higher in the autumn and in heated soil than in the winter season in nonheated soil. Fifty per cent of root segments were colonized 35, 42 and 67 days after planting in the winter-heated, autumn and winter-unheated plots, respectively. A high correlation was found between soil temperatures above 20°C during the first 30 days after planting and disease severity. It is suggested that soil temperature during the early stages of plant development is an important factor in disease development and the expression of melon collapse caused by M. cannonballus.
Note:
Related Files :
Cucumis melo
disease incidence
fungi
Melon collapse
Monosporascus
Monosporascus cannonballus
soil temperature
עוד תגיות
תוכן קשור
More details
DOI :
10.1046/j.1365-3059.2002.00731.x
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
19758
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:31
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Scientific Publication
Effect of soil temperature on disease development in melon plants infected by Monosporascus cannonballus
51
Pivonia, S., Arava Research and Development, Sapir 86825, Israel
Cohen, R., Department of Vegetable Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Kigel, J., Department of Agricultural Botany, Hebrew University of Jerusalem, Rehovot 76100, Israel
Katan, J., Department of Plant Pathology and Microbiology, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Effect of soil temperature on disease development in melon plants infected by Monosporascus cannonballus
The effect of soil temperature on melon collapse induced by Monosporascus cannonballus was studied in the laboratory and in the field. In the laboratory, ascospore germination and hyphal penetration into melon roots were enhanced by increasing the temperature from 20 to 32°C. The optimum temperature for mycelial growth of five isolates of M. cannonballus was 30°C. In the field, the effect of temperature was studied in experiments conducted during the winter and autumn cropping seasons from 1995 to 1998. Disease progress was much faster in the autumn than in the winter crop seasons. Disease incidence reached 100% in the three consecutive autumn seasons studied. In the winter seasons, however, planting date influenced disease incidence. Early planting, at the beginning of January, resulted in a low disease incidence (6-26%, 125 days after planting), whereas planting at the end of January resulted in higher disease incidence (72-88%, 95-119 days after planting). In plots in which the soil was artificially heated to 35°C during the winter season, disease incidence reached 85%, as in the autumn season. Plants grown during the winter in unheated soil, or in artificially heated soil disinfected with methyl bromide, did not collapse. Root colonization by the pathogen was higher in the autumn and in heated soil than in the winter season in nonheated soil. Fifty per cent of root segments were colonized 35, 42 and 67 days after planting in the winter-heated, autumn and winter-unheated plots, respectively. A high correlation was found between soil temperatures above 20°C during the first 30 days after planting and disease severity. It is suggested that soil temperature during the early stages of plant development is an important factor in disease development and the expression of melon collapse caused by M. cannonballus.
Scientific Publication
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