Resistance of maize varieties to the maize weevil Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae)
This study aimed at evaluating commonly used maize varieties, collected from Melkasa and Bako Agricultural Research Centers and Haramaya University, Ethiopia, against the maize weevil Sitophilus zeamais Motsch., one of the most important cosmopolitan stored product pests in maize. A total of 13 improved maize varieties were screened for their relative susceptibility to S. zeamais. The Dobie index of susceptibility was used to group the varieties. The variety, ?BHQP-542?, had the least index of susceptibility and was regarded as resistant. The varieties, ?Katumani?, ?Melkasa-I?, ?Melkasa-II?, ?Melkasa-III?, ?Coree?, ?BH-541?, ?BH-660?, ?BH-540?, ?Rare-I?, ?Awasa-511?, ?ACV3? and ?ACV6?, were moderately resistant. Weevils fed with the resistant variety produced low numbers of F1 progeny, had a high median developmental time and a low percentage of seed damage and seed weight loss. Maize varieties with a high F1 progeny tended to have a short median developmental time. An increasing number of F1 progeny resulted in an increasing seed damage and seed weight loss. We found an inverse relationship between the susceptibility index and percent mortality and median developmental time; however, the numbers of F1 progeny, percent seed damage and seed weight loss were positively related with the susceptibility index. The use of resistant varieties should be promoted in managing S. zeamais in stored maize under subsistence farming conditions in Africa.
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Language: | English |
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Academic Journals
2009
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Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Susceptibility Index, GRAIN, DAMAGE, MAIZE, RESISTANCE VARIETIES, SITOPHILUS ZEAMAIS, |
Online Access: | http://hdl.handle.net/10883/3088 |
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dig-cimmyt-10883-30882023-12-04T14:19:54Z Resistance of maize varieties to the maize weevil Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) Abebe, F. Tadele Tefera Mugo, S.N. Beyene, Y. Vidal, S. AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Susceptibility Index GRAIN DAMAGE MAIZE RESISTANCE VARIETIES SITOPHILUS ZEAMAIS This study aimed at evaluating commonly used maize varieties, collected from Melkasa and Bako Agricultural Research Centers and Haramaya University, Ethiopia, against the maize weevil Sitophilus zeamais Motsch., one of the most important cosmopolitan stored product pests in maize. A total of 13 improved maize varieties were screened for their relative susceptibility to S. zeamais. The Dobie index of susceptibility was used to group the varieties. The variety, ?BHQP-542?, had the least index of susceptibility and was regarded as resistant. The varieties, ?Katumani?, ?Melkasa-I?, ?Melkasa-II?, ?Melkasa-III?, ?Coree?, ?BH-541?, ?BH-660?, ?BH-540?, ?Rare-I?, ?Awasa-511?, ?ACV3? and ?ACV6?, were moderately resistant. Weevils fed with the resistant variety produced low numbers of F1 progeny, had a high median developmental time and a low percentage of seed damage and seed weight loss. Maize varieties with a high F1 progeny tended to have a short median developmental time. An increasing number of F1 progeny resulted in an increasing seed damage and seed weight loss. We found an inverse relationship between the susceptibility index and percent mortality and median developmental time; however, the numbers of F1 progeny, percent seed damage and seed weight loss were positively related with the susceptibility index. The use of resistant varieties should be promoted in managing S. zeamais in stored maize under subsistence farming conditions in Africa. 5937-5943 2013-06-30T05:24:35Z 2013-06-30T05:24:35Z 2009 Article http://hdl.handle.net/10883/3088 English CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose. Open Access PDF Academic Journals http://www.academicjournals.org/AJB/abstracts/abs2009/2Nov/Abebe%20et%20al.htm 21 8 African Journal of Biotechnology |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Susceptibility Index GRAIN DAMAGE MAIZE RESISTANCE VARIETIES SITOPHILUS ZEAMAIS AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Susceptibility Index GRAIN DAMAGE MAIZE RESISTANCE VARIETIES SITOPHILUS ZEAMAIS |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Susceptibility Index GRAIN DAMAGE MAIZE RESISTANCE VARIETIES SITOPHILUS ZEAMAIS AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Susceptibility Index GRAIN DAMAGE MAIZE RESISTANCE VARIETIES SITOPHILUS ZEAMAIS Abebe, F. Tadele Tefera Mugo, S.N. Beyene, Y. Vidal, S. Resistance of maize varieties to the maize weevil Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) |
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This study aimed at evaluating commonly used maize varieties, collected from Melkasa and Bako Agricultural Research Centers and Haramaya University, Ethiopia, against the maize weevil Sitophilus zeamais Motsch., one of the most important cosmopolitan stored product pests in maize. A total of 13 improved maize varieties were screened for their relative susceptibility to S. zeamais. The Dobie index of susceptibility was used to group the varieties. The variety, ?BHQP-542?, had the least index of susceptibility and was regarded as resistant. The varieties, ?Katumani?, ?Melkasa-I?, ?Melkasa-II?, ?Melkasa-III?, ?Coree?, ?BH-541?, ?BH-660?, ?BH-540?, ?Rare-I?, ?Awasa-511?, ?ACV3? and ?ACV6?, were moderately resistant. Weevils fed with the resistant variety produced low numbers of F1 progeny, had a high median developmental time and a low percentage of seed damage and seed weight loss. Maize varieties with a high F1 progeny tended to have a short median developmental time. An increasing number of F1 progeny resulted in an increasing seed damage and seed weight loss. We found an inverse relationship between the susceptibility index and percent mortality and median developmental time; however, the numbers of F1 progeny, percent seed damage and seed weight loss were positively related with the susceptibility index. The use of resistant varieties should be promoted in managing S. zeamais in stored maize under subsistence farming conditions in Africa. |
format |
Article |
topic_facet |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Susceptibility Index GRAIN DAMAGE MAIZE RESISTANCE VARIETIES SITOPHILUS ZEAMAIS |
author |
Abebe, F. Tadele Tefera Mugo, S.N. Beyene, Y. Vidal, S. |
author_facet |
Abebe, F. Tadele Tefera Mugo, S.N. Beyene, Y. Vidal, S. |
author_sort |
Abebe, F. |
title |
Resistance of maize varieties to the maize weevil Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) |
title_short |
Resistance of maize varieties to the maize weevil Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) |
title_full |
Resistance of maize varieties to the maize weevil Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) |
title_fullStr |
Resistance of maize varieties to the maize weevil Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) |
title_full_unstemmed |
Resistance of maize varieties to the maize weevil Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) |
title_sort |
resistance of maize varieties to the maize weevil sitophilus zeamais (motsch.) (coleoptera: curculionidae) |
publisher |
Academic Journals |
publishDate |
2009 |
url |
http://hdl.handle.net/10883/3088 |
work_keys_str_mv |
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