Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method
Problem statement: Huanglongbing (HLB) is a phloem limited disease in citrus caused by a fastidious bacterium called 'Candidatus Liberibacter' found in Africa, Asia and United States of America (USA). HLB can severely reduce vigor and yield or kill all citrus trees within 5 years. There is...
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| Format: | Article |
| Language: | English |
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Science Publications
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/4896/ http://psasir.upm.edu.my/id/eprint/4896/1/ajabssp.2009.32.38.pdf |
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| author | Shokrollah, Hajivand Abdullah, Thohirah Lee Sijam, Kamaruzaman Abdullah, Siti Nor Akmar Abdullah, Nur Ashikin Psyquay |
| author_facet | Shokrollah, Hajivand Abdullah, Thohirah Lee Sijam, Kamaruzaman Abdullah, Siti Nor Akmar Abdullah, Nur Ashikin Psyquay |
| author_sort | Shokrollah, Hajivand |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Problem statement: Huanglongbing (HLB) is a phloem limited disease in citrus caused by a fastidious bacterium called 'Candidatus Liberibacter' found in Africa, Asia and United States of America (USA). HLB can severely reduce vigor and yield or kill all citrus trees within 5 years. There is a need to screen and identify suitable rootstock for propagation of clean plan materials for citrus in the tropics. This study was conducted to detect the presence of HLB on 18 selected citrus species and to categorize the level of infection and susceptibility of citrus species to HLB. Approach: Eighteen citrus species were assessed for susceptibility to HLB by graft transmission from source infection (Citrus reticulata). Results HLB was detected in 15 species 6 months after grafting using PCR test. Conclusion: The species could be categorized in five groups: Severe group (72-58% severity) which includes C. reticulata, C. sinensis, C. reshni cv. cleopatra, moderate group (50-41% severity) includes Fortunella sp. cv. Kasturi Chinai, C. macrophylla, C. microcarpa, mild group (25-17% severity) which included C. medica, C. aurantifolia, Citrus sp. (natural biotype), C. jambhiri. The tolerant group which did not show any HLB symptoms but tested positive by PCR test includes C. aurantium and C. aurantifolia. The resistant groups which include C. grandis cv. Limau Bali, C. hysterix and Citrus sp. cv. Limau Tembikai showed no symptoms and were tested negative for HLB. |
| first_indexed | 2025-11-15T07:19:30Z |
| format | Article |
| id | upm-4896 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:19:30Z |
| publishDate | 2009 |
| publisher | Science Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-48962017-11-21T05:58:05Z http://psasir.upm.edu.my/id/eprint/4896/ Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method Shokrollah, Hajivand Abdullah, Thohirah Lee Sijam, Kamaruzaman Abdullah, Siti Nor Akmar Abdullah, Nur Ashikin Psyquay Problem statement: Huanglongbing (HLB) is a phloem limited disease in citrus caused by a fastidious bacterium called 'Candidatus Liberibacter' found in Africa, Asia and United States of America (USA). HLB can severely reduce vigor and yield or kill all citrus trees within 5 years. There is a need to screen and identify suitable rootstock for propagation of clean plan materials for citrus in the tropics. This study was conducted to detect the presence of HLB on 18 selected citrus species and to categorize the level of infection and susceptibility of citrus species to HLB. Approach: Eighteen citrus species were assessed for susceptibility to HLB by graft transmission from source infection (Citrus reticulata). Results HLB was detected in 15 species 6 months after grafting using PCR test. Conclusion: The species could be categorized in five groups: Severe group (72-58% severity) which includes C. reticulata, C. sinensis, C. reshni cv. cleopatra, moderate group (50-41% severity) includes Fortunella sp. cv. Kasturi Chinai, C. macrophylla, C. microcarpa, mild group (25-17% severity) which included C. medica, C. aurantifolia, Citrus sp. (natural biotype), C. jambhiri. The tolerant group which did not show any HLB symptoms but tested positive by PCR test includes C. aurantium and C. aurantifolia. The resistant groups which include C. grandis cv. Limau Bali, C. hysterix and Citrus sp. cv. Limau Tembikai showed no symptoms and were tested negative for HLB. Science Publications 2009 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/4896/1/ajabssp.2009.32.38.pdf Shokrollah, Hajivand and Abdullah, Thohirah Lee and Sijam, Kamaruzaman and Abdullah, Siti Nor Akmar and Abdullah, Nur Ashikin Psyquay (2009) Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method. American Journal of Agricultural and Biological Sciences, 4 (1). pp. 32-38. ISSN 1557-4989; ESSN: 1557-4997 http://www.thescipub.com/abstract/?doi=ajabssp.2009.32.38 10.3844/AJAB.2009.32.38 |
| spellingShingle | Shokrollah, Hajivand Abdullah, Thohirah Lee Sijam, Kamaruzaman Abdullah, Siti Nor Akmar Abdullah, Nur Ashikin Psyquay Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method |
| title | Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method |
| title_full | Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method |
| title_fullStr | Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method |
| title_full_unstemmed | Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method |
| title_short | Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method |
| title_sort | differential reaction of citrus species in malaysia to huanglongbing (hlb) disease using grafting method |
| url | http://psasir.upm.edu.my/id/eprint/4896/ http://psasir.upm.edu.my/id/eprint/4896/ http://psasir.upm.edu.my/id/eprint/4896/ http://psasir.upm.edu.my/id/eprint/4896/1/ajabssp.2009.32.38.pdf |