Field evaluation of the impact of cocoa swollen shoot virus disease infection on yield traits of different cocoa (Theobroma cacao L.) clones in Ghana
Cocoa swollen shoot virus disease (CSSVD) is a major disease of cacao (Theobroma cacao L.) in Ghana and other West African countries that grow the crop. Attempts to develop resistant varieties since the discovery of the disease in 1936 have yielded little success. Recently, planting materials that a...
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| description | Cocoa swollen shoot virus disease (CSSVD) is a major disease of cacao (Theobroma cacao L.) in Ghana and other West African countries that grow the crop. Attempts to develop resistant varieties since the discovery of the disease in 1936 have yielded little success. Recently, planting materials that are tolerant to the disease have been recommended for planting in areas with high CSSVD prevalence. However, the effect of CSSVD on yield component traits of most cacao clones including the tolerant varieties has not been well studied. To investigate the impact of CSSVD on these traits, reduction in bean weight (BW), number of beans per pod (NoBP) and dry bean yield (DBY) between symptomless and symptomatic trees, and disease incidence (DI) among 210 different cacao clones were evaluated. The clones were transplanted in June 2010 following a randomised complete block design with four replications consisting of three trees per clone per block. Response of the clones to CSSVD incidence had 180 of the genotypes having < 50% symptoms. Clones of Contanama, Iquitos, Marañon, Nanay and unknown derived from Upper Amazon parentage had less DI at the end of the study. The CSSVD effect (symptomless vs. symptomatic) was significant (p |
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Attempts to develop resistant varieties since the discovery of the disease in 1936 have yielded little success. Recently, planting materials that are tolerant to the disease have been recommended for planting in areas with high CSSVD prevalence. However, the effect of CSSVD on yield component traits of most cacao clones including the tolerant varieties has not been well studied. To investigate the impact of CSSVD on these traits, reduction in bean weight (BW), number of beans per pod (NoBP) and dry bean yield (DBY) between symptomless and symptomatic trees, and disease incidence (DI) among 210 different cacao clones were evaluated. The clones were transplanted in June 2010 following a randomised complete block design with four replications consisting of three trees per clone per block. Response of the clones to CSSVD incidence had 180 of the genotypes having < 50% symptoms. Clones of Contanama, Iquitos, Marañon, Nanay and unknown derived from Upper Amazon parentage had less DI at the end of the study. The CSSVD effect (symptomless vs. symptomatic) was significant (p < 0.05) for DBY and NoBP, and the symptomless trees surpassed on average their symptomatic trees by 21.17% for DBY. Some of the best-performing clones identified under natural CSSVD infection were; COCA 3348/52 and GU 219/V among the underrepresented clones, B 36, ICS 40, NA 33 x IMC 67, T30/628, T60/887, T63/971, T 81/1879 and T 82/503 among those that combine high DBY with low yield reduction, and NA 124, T17/358, T35/78, T57/305, T63/971 x SCA 6, T65/239, T76/1835 and T82/2294 among those that combine high DBY with no disease incidence. Their inclusion in breeding programs that seek to develop resistant CSSVD varieties or deployment as planting materials in endemic areas to improve yield production in Ghana is recommended on the basis of the present observations.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0262461</identifier><identifier>PMID: 35051192</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Agriculture ; Badnavirus ; Beans ; Biology and Life Sciences ; Cacao - genetics ; Cacao - virology ; Cloning ; Cloning, Organism ; Cocoa ; Cocoa industry ; Crop yields ; Disease ; Diseases and pests ; Endemic plants ; Farms ; Forecasts and trends ; Gene banks ; Genetic aspects ; Genotype & phenotype ; Genotypes ; Germplasm ; Ghana ; Growth ; Infections ; Influence ; Medicine and Health Sciences ; People and Places ; Plant Breeding ; Plant Diseases - genetics ; Plant Diseases - virology ; Plant virus diseases ; Plant viruses ; Planting ; Plants, Genetically Modified ; Reduction ; Research and Analysis Methods ; Signs and symptoms ; Theobroma cacao ; Trees ; Virus diseases of plants ; Viruses ; Yield</subject><ispartof>PloS one, 2022-01, Vol.17 (1), p.e0262461-e0262461</ispartof><rights>COPYRIGHT 2022 Public Library of Science</rights><rights>2022 Ofori et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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Clones of Contanama, Iquitos, Marañon, Nanay and unknown derived from Upper Amazon parentage had less DI at the end of the study. The CSSVD effect (symptomless vs. symptomatic) was significant (p < 0.05) for DBY and NoBP, and the symptomless trees surpassed on average their symptomatic trees by 21.17% for DBY. Some of the best-performing clones identified under natural CSSVD infection were; COCA 3348/52 and GU 219/V among the underrepresented clones, B 36, ICS 40, NA 33 x IMC 67, T30/628, T60/887, T63/971, T 81/1879 and T 82/503 among those that combine high DBY with low yield reduction, and NA 124, T17/358, T35/78, T57/305, T63/971 x SCA 6, T65/239, T76/1835 and T82/2294 among those that combine high DBY with no disease incidence. Their inclusion in breeding programs that seek to develop resistant CSSVD varieties or deployment as planting materials in endemic areas to improve yield production in Ghana is recommended on the basis of the present observations.</description><subject>Agriculture</subject><subject>Badnavirus</subject><subject>Beans</subject><subject>Biology and Life Sciences</subject><subject>Cacao - genetics</subject><subject>Cacao - virology</subject><subject>Cloning</subject><subject>Cloning, Organism</subject><subject>Cocoa</subject><subject>Cocoa industry</subject><subject>Crop yields</subject><subject>Disease</subject><subject>Diseases and pests</subject><subject>Endemic plants</subject><subject>Farms</subject><subject>Forecasts and trends</subject><subject>Gene banks</subject><subject>Genetic aspects</subject><subject>Genotype & phenotype</subject><subject>Genotypes</subject><subject>Germplasm</subject><subject>Ghana</subject><subject>Growth</subject><subject>Infections</subject><subject>Influence</subject><subject>Medicine and Health Sciences</subject><subject>People and Places</subject><subject>Plant Breeding</subject><subject>Plant Diseases - 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Attempts to develop resistant varieties since the discovery of the disease in 1936 have yielded little success. Recently, planting materials that are tolerant to the disease have been recommended for planting in areas with high CSSVD prevalence. However, the effect of CSSVD on yield component traits of most cacao clones including the tolerant varieties has not been well studied. To investigate the impact of CSSVD on these traits, reduction in bean weight (BW), number of beans per pod (NoBP) and dry bean yield (DBY) between symptomless and symptomatic trees, and disease incidence (DI) among 210 different cacao clones were evaluated. The clones were transplanted in June 2010 following a randomised complete block design with four replications consisting of three trees per clone per block. Response of the clones to CSSVD incidence had 180 of the genotypes having < 50% symptoms. Clones of Contanama, Iquitos, Marañon, Nanay and unknown derived from Upper Amazon parentage had less DI at the end of the study. The CSSVD effect (symptomless vs. symptomatic) was significant (p < 0.05) for DBY and NoBP, and the symptomless trees surpassed on average their symptomatic trees by 21.17% for DBY. Some of the best-performing clones identified under natural CSSVD infection were; COCA 3348/52 and GU 219/V among the underrepresented clones, B 36, ICS 40, NA 33 x IMC 67, T30/628, T60/887, T63/971, T 81/1879 and T 82/503 among those that combine high DBY with low yield reduction, and NA 124, T17/358, T35/78, T57/305, T63/971 x SCA 6, T65/239, T76/1835 and T82/2294 among those that combine high DBY with no disease incidence. Their inclusion in breeding programs that seek to develop resistant CSSVD varieties or deployment as planting materials in endemic areas to improve yield production in Ghana is recommended on the basis of the present observations.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>35051192</pmid><doi>10.1371/journal.pone.0262461</doi><orcidid>https://orcid.org/0000-0003-0465-2746</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Public Library of Science (PLoS) Journals Open Access; MEDLINE; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Agriculture Badnavirus Beans Biology and Life Sciences Cacao - genetics Cacao - virology Cloning Cloning, Organism Cocoa Cocoa industry Crop yields Disease Diseases and pests Endemic plants Farms Forecasts and trends Gene banks Genetic aspects Genotype & phenotype Genotypes Germplasm Ghana Growth Infections Influence Medicine and Health Sciences People and Places Plant Breeding Plant Diseases - genetics Plant Diseases - virology Plant virus diseases Plant viruses Planting Plants, Genetically Modified Reduction Research and Analysis Methods Signs and symptoms Theobroma cacao Trees Virus diseases of plants Viruses Yield |
| title | Field evaluation of the impact of cocoa swollen shoot virus disease infection on yield traits of different cocoa (Theobroma cacao L.) clones in Ghana |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-13T12%3A35%3A17IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_plos_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Field%20evaluation%20of%20the%20impact%20of%20cocoa%20swollen%20shoot%20virus%20disease%20infection%20on%20yield%20traits%20of%20different%20cocoa%20(Theobroma%20cacao%20L.)%20clones%20in%20Ghana&rft.jtitle=PloS%20one&rft.au=Ofori,%20Atta&rft.date=2022-01-01&rft.volume=17&rft.issue=1&rft.spage=e0262461&rft.epage=e0262461&rft.pages=e0262461-e0262461&rft.issn=1932-6203&rft.eissn=1932-6203&rft_id=info:doi/10.1371/journal.pone.0262461&rft_dat=%3Cgale_plos_%3EA689986098%3C/gale_plos_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2621662773&rft_id=info:pmid/35051192&rft_galeid=A689986098&rft_doaj_id=oai_doaj_org_article_1c262638fc2f474eab81a8ff14752d58&rfr_iscdi=true |