Genotype X Environment Response of ‘Matooke’ Hybrids (Naritas) to <i>Pseudocercospora fijiensis</i>, the Cause of Black Sigatoka in Banana
Growing bananas resistant to <i>Pseudocercospora fijiensis</i>, the cause of black Sigatoka, is the preferred disease control strategy for resource-poor farmers. Banana breeding programs in east Africa have developed 27 Matooke hybrids (commonly known as NARITAs) with higher yields than...
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doaj-e0967f9a1358497aa42cfd99a3f2604f2021-06-30T23:13:07ZengMDPI AGAgronomy2073-43952021-06-01111145114510.3390/agronomy11061145Genotype X Environment Response of ‘Matooke’ Hybrids (Naritas) to <i>Pseudocercospora fijiensis</i>, the Cause of Black Sigatoka in BananaJanet Kimunye0Kennedy Jomanga1Anthony Fredrick Tazuba2Evans Were3Altus Viljoen4Rony Swennen5George Mahuku6International Institute of Tropical Agriculture, P.O. Box 7878-10301, Kampala, UgandaInternational Institute of Tropical Agriculture (IITA), Ibadan, NigeriaBioversity International, P.O. Box 24384, Kampala, UgandaFaculty of Agriculture, Institute of Agricultural Sciences in the Tropics (Hans-Ruthenberg-Institute), University of Hohenheim, 70599 Stuttgart, GermanyDepartment of Plant Pathology, Stellenbosch University, Matieland 7602, South AfricaInternational Institute of Tropical Agriculture, Nelson Mandela African Institution of Science and Technology, Nelson Mandela Road, Arusha, TanzaniaInternational Institute of Tropical Agriculture, P.O. Box 7878-10301, Kampala, UgandaGrowing bananas resistant to <i>Pseudocercospora fijiensis</i>, the cause of black Sigatoka, is the preferred disease control strategy for resource-poor farmers. Banana breeding programs in east Africa have developed 27 Matooke hybrids (commonly known as NARITAs) with higher yields than local landraces. To assess the response of NARITA hybrids to <i>P. fijiensis</i>, 22 hybrids were evaluated under natural field conditions in four locations—Kawanda and Mbarara in Uganda, and Maruku, and Mitarula in Tanzania—between 2016 and 2018 for three crop cycles. Black Sigatoka was visually assessed and the area under the disease progress curve calculated for each plant over time. Significant differences (<i>p</i> < 0.001) were observed between genotypes, environments, and their interaction. The highest contributor to black Sigatoka severity (39.1%) was the environment, followed by the genotype (37.5%) and the genotype Χ environment interaction (GEI) (23.4%). NARITA 2, 7, 14, 21 and 23 were resistant and the most stable hybrids across locations. If other attributes such as the yield and taste are acceptable to end-users, these hybrids can be released to farmers in the region to replace highly susceptible landraces. Mitarula was identified as an ideal site for evaluating banana against black Sigatoka and should be used as a representative location to minimize costs of disease evaluations.https://www.mdpi.com/2073-4395/11/6/1145Sigatokaeast African highland bananas (EAHB), NARITAsstabilitygenotype by environment interaction (GEI) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Janet Kimunye Kennedy Jomanga Anthony Fredrick Tazuba Evans Were Altus Viljoen Rony Swennen George Mahuku |
spellingShingle |
Janet Kimunye Kennedy Jomanga Anthony Fredrick Tazuba Evans Were Altus Viljoen Rony Swennen George Mahuku Genotype X Environment Response of ‘Matooke’ Hybrids (Naritas) to <i>Pseudocercospora fijiensis</i>, the Cause of Black Sigatoka in Banana Agronomy Sigatoka east African highland bananas (EAHB), NARITAs stability genotype by environment interaction (GEI) |
author_facet |
Janet Kimunye Kennedy Jomanga Anthony Fredrick Tazuba Evans Were Altus Viljoen Rony Swennen George Mahuku |
author_sort |
Janet Kimunye |
title |
Genotype X Environment Response of ‘Matooke’ Hybrids (Naritas) to <i>Pseudocercospora fijiensis</i>, the Cause of Black Sigatoka in Banana |
title_short |
Genotype X Environment Response of ‘Matooke’ Hybrids (Naritas) to <i>Pseudocercospora fijiensis</i>, the Cause of Black Sigatoka in Banana |
title_full |
Genotype X Environment Response of ‘Matooke’ Hybrids (Naritas) to <i>Pseudocercospora fijiensis</i>, the Cause of Black Sigatoka in Banana |
title_fullStr |
Genotype X Environment Response of ‘Matooke’ Hybrids (Naritas) to <i>Pseudocercospora fijiensis</i>, the Cause of Black Sigatoka in Banana |
title_full_unstemmed |
Genotype X Environment Response of ‘Matooke’ Hybrids (Naritas) to <i>Pseudocercospora fijiensis</i>, the Cause of Black Sigatoka in Banana |
title_sort |
genotype x environment response of ‘matooke’ hybrids (naritas) to <i>pseudocercospora fijiensis</i>, the cause of black sigatoka in banana |
publisher |
MDPI AG |
series |
Agronomy |
issn |
2073-4395 |
publishDate |
2021-06-01 |
description |
Growing bananas resistant to <i>Pseudocercospora fijiensis</i>, the cause of black Sigatoka, is the preferred disease control strategy for resource-poor farmers. Banana breeding programs in east Africa have developed 27 Matooke hybrids (commonly known as NARITAs) with higher yields than local landraces. To assess the response of NARITA hybrids to <i>P. fijiensis</i>, 22 hybrids were evaluated under natural field conditions in four locations—Kawanda and Mbarara in Uganda, and Maruku, and Mitarula in Tanzania—between 2016 and 2018 for three crop cycles. Black Sigatoka was visually assessed and the area under the disease progress curve calculated for each plant over time. Significant differences (<i>p</i> < 0.001) were observed between genotypes, environments, and their interaction. The highest contributor to black Sigatoka severity (39.1%) was the environment, followed by the genotype (37.5%) and the genotype Χ environment interaction (GEI) (23.4%). NARITA 2, 7, 14, 21 and 23 were resistant and the most stable hybrids across locations. If other attributes such as the yield and taste are acceptable to end-users, these hybrids can be released to farmers in the region to replace highly susceptible landraces. Mitarula was identified as an ideal site for evaluating banana against black Sigatoka and should be used as a representative location to minimize costs of disease evaluations. |
topic |
Sigatoka east African highland bananas (EAHB), NARITAs stability genotype by environment interaction (GEI) |
url |
https://www.mdpi.com/2073-4395/11/6/1145 |
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