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פותח על ידי קלירמאש פתרונות בע"מ -
The influence of the inoculum source of Rhizoctonia solani on development of black scurf on potato
Year:
2005
Source of publication :
Journal of Phytopathology
Authors :
פרץ-אלון, יצחק
;
.
צרור, לאה
;
.
Volume :
153
Co-Authors:
Tsror, L., Department of Plant Pathology, Gilat Experiment Station, Agricultural Research Organization, Negev 85280, Israel, Department of Plant Pathology, Gilat Experiment Station, Agricultural Research Organization, Negev, Israel
Peretz-Alon, I., Ma'on Enterprises, MP, Negev 85280, Israel, Department of Plant Pathology, Gilat Experiment Station, Agricultural Research Organization, Negev, Israel
Facilitators :
From page:
240
To page:
244
(
Total pages:
5
)
Abstract:
Rhizoctonia solani, the causal agent of stem canker and black scurf on potato, survives as sclerotia on tubers, in soil and in plant residues. The objective of the present study was to evaluate the importance of inoculum source on disease development. Disease-free minitubers and seed tubers contaminated with low levels of R. solani were planted in fumigated or artificially inoculated growth mixture in greenhouse experiments. Black scurf incidence and severity were significantly higher when the inoculum was present in both seed tubers and soil, compared with either of them separately. The severity of disease symptoms on the subterranean parts of the plant also were significantly higher in plots where both seed tubers and soil were contaminated, compared with plots where the inoculum source was either the seed tubers or the soil. Thus, both major sources of inoculum, seed tubers and soil, are important in disease development. However, when both sources are present, black scurf incidence and severity are increased, leading to economical damage to tuber yield and quality. Additional results from field trials support these findings. Disease incidence and severity on daughter tubers were correlated with levels of contamination in seed tubers and soil. When seed tubers and soil were heavily infested, the levels of black scurf incidence and severity on daughter tubers were very high; when seed tuber and soil infestation were very low, black scurf incidence and severity on progeny were also lower. Disease levels were reduced by in-furrow fungicide treatment, but were less effective when the initial levels of the fungus on the seed tubers and in the soil were high. © 2005 Blackwell Verlag.
Note:
Related Files :
Developmental Biology
fungi
Quality damage
Rhizoctonia
Solanum tuberosum
Stem canker
Tuberosum
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/j.1439-0434.2005.00962.x
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
30946
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:58
Scientific Publication
The influence of the inoculum source of Rhizoctonia solani on development of black scurf on potato
153
Tsror, L., Department of Plant Pathology, Gilat Experiment Station, Agricultural Research Organization, Negev 85280, Israel, Department of Plant Pathology, Gilat Experiment Station, Agricultural Research Organization, Negev, Israel
Peretz-Alon, I., Ma'on Enterprises, MP, Negev 85280, Israel, Department of Plant Pathology, Gilat Experiment Station, Agricultural Research Organization, Negev, Israel
The influence of the inoculum source of Rhizoctonia solani on development of black scurf on potato
Rhizoctonia solani, the causal agent of stem canker and black scurf on potato, survives as sclerotia on tubers, in soil and in plant residues. The objective of the present study was to evaluate the importance of inoculum source on disease development. Disease-free minitubers and seed tubers contaminated with low levels of R. solani were planted in fumigated or artificially inoculated growth mixture in greenhouse experiments. Black scurf incidence and severity were significantly higher when the inoculum was present in both seed tubers and soil, compared with either of them separately. The severity of disease symptoms on the subterranean parts of the plant also were significantly higher in plots where both seed tubers and soil were contaminated, compared with plots where the inoculum source was either the seed tubers or the soil. Thus, both major sources of inoculum, seed tubers and soil, are important in disease development. However, when both sources are present, black scurf incidence and severity are increased, leading to economical damage to tuber yield and quality. Additional results from field trials support these findings. Disease incidence and severity on daughter tubers were correlated with levels of contamination in seed tubers and soil. When seed tubers and soil were heavily infested, the levels of black scurf incidence and severity on daughter tubers were very high; when seed tuber and soil infestation were very low, black scurf incidence and severity on progeny were also lower. Disease levels were reduced by in-furrow fungicide treatment, but were less effective when the initial levels of the fungus on the seed tubers and in the soil were high. © 2005 Blackwell Verlag.
Scientific Publication
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