Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea Germplasm
Ascochyta blight caused by Ascochyta rabiei (Pass.) Lab. (Telomorph: Didymella rabiei) (Kov.) is one of the most important fungal diseases in chickpea worldwide. Knowledge about pathogen aggressiveness and identification resistance sources to different pathotypes is very useful for proper decisions...
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| Format: | Article |
| Language: | English |
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Hanrimwon Publishing Company
2019-08-01
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| Series: | The Plant Pathology Journal |
| Subjects: | |
| Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6706013 |
| _version_ | 1819112899312877568 |
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| author | Somayeh Farahani Reza Talebi Mojdeh Maleki Rahim Mehrabi Homayoun Kanouni |
| author_facet | Somayeh Farahani Reza Talebi Mojdeh Maleki Rahim Mehrabi Homayoun Kanouni |
| author_sort | Somayeh Farahani |
| collection | DOAJ |
| description | Ascochyta blight caused by Ascochyta rabiei (Pass.) Lab. (Telomorph: Didymella rabiei) (Kov.) is one of the most important fungal diseases in chickpea worldwide. Knowledge about pathogen aggressiveness and identification resistance sources to different pathotypes is very useful for proper decisions in breeding programs. In this study, virulence of 32 A. rabiei isolates from different part of Iran were analyzed on seven chickpea differentials and grouped into six races based on 0–9 rating scale and susceptibility/resistant pattern of chickpea differentials. The least and most frequent races were race V and race I, respectively. Race V and VI showed highly virulence on most of differential, while race I showed least aggressiveness. Resistance pattern of 165 chickpea genotypes also were tested against six different A. rabiei races. ANOVA analysis showed high significant difference for isolate, chickpea genotypes and their interactions. Overall chickpea × isolate (race) interactions, 259 resistance responses (disease severity ≤ 4) were identified. Resistance spectra of chickpea genotypes showed more resistance rate to race I (49.70%) and race III (35.15%), while there were no resistance genotypes to race VI. Cluster analysis based on disease severity rate, grouped chickpea genotypes into four distinct clusters. Interactions between isolates or races used in this study, showed the lack of a genotype with complete resistance. Our finding for virulence pattern of A. rabiei and newly identified resistance sources could be considerably important for integration of ascochyta blight resistance genes into chickpea breeding programs and proper decision in future for germplasm conservation and diseases management. |
| first_indexed | 2024-12-22T04:20:50Z |
| format | Article |
| id | doaj.art-c9041fa1b3b4487cb7aed50497d9fe95 |
| institution | Directory Open Access Journal |
| issn | 1598-2254 |
| language | English |
| last_indexed | 2024-12-22T04:20:50Z |
| publishDate | 2019-08-01 |
| publisher | Hanrimwon Publishing Company |
| record_format | Article |
| series | The Plant Pathology Journal |
| spelling | doaj.art-c9041fa1b3b4487cb7aed50497d9fe952022-12-21T18:39:18ZengHanrimwon Publishing CompanyThe Plant Pathology Journal1598-22542019-08-0135432132910.5423/PPJ.OA.12.2018.029910.5423PPJ.OA.12.2018.0299Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea GermplasmSomayeh Farahani0Reza Talebi1Mojdeh Maleki2Rahim Mehrabi3Homayoun Kanouni4Department of Plant Protection, Varamin-Pishva Branch, Islamic Azad University, Varamin 3381774895, IranDepartment of Agronomy & Plant Breeding, College of Agriculture, Sanandaj Branch, Islamic Azad University, Sanandaj 618, IranDepartment of Plant Protection, Varamin-Pishva Branch, Islamic Azad University, Varamin 3381774895, IranDepartment of Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan 8415683111, IranKordestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Sanandaj 33623351, IranAscochyta blight caused by Ascochyta rabiei (Pass.) Lab. (Telomorph: Didymella rabiei) (Kov.) is one of the most important fungal diseases in chickpea worldwide. Knowledge about pathogen aggressiveness and identification resistance sources to different pathotypes is very useful for proper decisions in breeding programs. In this study, virulence of 32 A. rabiei isolates from different part of Iran were analyzed on seven chickpea differentials and grouped into six races based on 0–9 rating scale and susceptibility/resistant pattern of chickpea differentials. The least and most frequent races were race V and race I, respectively. Race V and VI showed highly virulence on most of differential, while race I showed least aggressiveness. Resistance pattern of 165 chickpea genotypes also were tested against six different A. rabiei races. ANOVA analysis showed high significant difference for isolate, chickpea genotypes and their interactions. Overall chickpea × isolate (race) interactions, 259 resistance responses (disease severity ≤ 4) were identified. Resistance spectra of chickpea genotypes showed more resistance rate to race I (49.70%) and race III (35.15%), while there were no resistance genotypes to race VI. Cluster analysis based on disease severity rate, grouped chickpea genotypes into four distinct clusters. Interactions between isolates or races used in this study, showed the lack of a genotype with complete resistance. Our finding for virulence pattern of A. rabiei and newly identified resistance sources could be considerably important for integration of ascochyta blight resistance genes into chickpea breeding programs and proper decision in future for germplasm conservation and diseases management.http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6706013Ascochyta blightchickpeapathogenic variabilityresistance sources |
| spellingShingle | Somayeh Farahani Reza Talebi Mojdeh Maleki Rahim Mehrabi Homayoun Kanouni Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea Germplasm The Plant Pathology Journal Ascochyta blight chickpea pathogenic variability resistance sources |
| title | Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea Germplasm |
| title_full | Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea Germplasm |
| title_fullStr | Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea Germplasm |
| title_full_unstemmed | Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea Germplasm |
| title_short | Pathogenic Diversity of Ascochyta rabiei Isolates and Identification of Resistance Sources in Core Collection of Chickpea Germplasm |
| title_sort | pathogenic diversity of ascochyta rabiei isolates and identification of resistance sources in core collection of chickpea germplasm |
| topic | Ascochyta blight chickpea pathogenic variability resistance sources |
| url | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6706013 |
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