Evaluation of CIMMYT drought tolerant maize germplasm for resistance to weevil (Sitophilus zeamais Motschulky) damage
This study was carried out to evaluate and assess the phenotypic correlation between the primary and secondary weevil resistant traits of 20 drought tolerant (DT) late maturing maize hybrids (LHYB) to weevil (Sitophilus zeamais Motschulsky) damage. Well-conditioned experimental samples with uniform grain moisture content were infested with 32; 10 to 14 day old weevils in the controlled temperature and humidity (CTH) environment for 55 days. Data were collected on kernel volume (KV) and grain hardness (GH) at the start of the experiment, percent weevil mortality (%WM) at the 21st day and percent grain weight loss (%GWL) and F1 weevil progeny emergence (F1WPE) at the 55th day of oviposition. Data were collected on starch, oil and protein content to confer resistance to weevil damage. There were highly significant differences (P<0.001) in F1WPE and %GWL, (P<0, 01) in KV while no significant differences were observed for %WM and GH. The obtained data confirmed that, there was a positive and significant correlation between F1WPE and %GWL, while a negative and significant correlation was observed between F1WPE and %WM. Hybrids CZH131022, CZH131003, CZH132064, CZH132069 and CZH132068 were the top five weevil resistant while hybrids CZH132066, CZH132065, CZH132074, CZH131008 and CZH132063 were the top five most susceptible.
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Academic Journals
2015
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Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Controlled Temperature and Humidity, Late Maturing Maize Hybrids, MAIZE, DROUGHT TOLERANCE, GERMPLASM, PEST RESISTANCE, SITOPHILUS ZEAMAIS, |
Online Access: | http://hdl.handle.net/10883/18832 |
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dig-cimmyt-10883-188322021-02-09T18:24:40Z Evaluation of CIMMYT drought tolerant maize germplasm for resistance to weevil (Sitophilus zeamais Motschulky) damage Mandizvidza, A. Setimela, P.S. Shorai Dari AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Controlled Temperature and Humidity Late Maturing Maize Hybrids MAIZE DROUGHT TOLERANCE GERMPLASM PEST RESISTANCE SITOPHILUS ZEAMAIS This study was carried out to evaluate and assess the phenotypic correlation between the primary and secondary weevil resistant traits of 20 drought tolerant (DT) late maturing maize hybrids (LHYB) to weevil (Sitophilus zeamais Motschulsky) damage. Well-conditioned experimental samples with uniform grain moisture content were infested with 32; 10 to 14 day old weevils in the controlled temperature and humidity (CTH) environment for 55 days. Data were collected on kernel volume (KV) and grain hardness (GH) at the start of the experiment, percent weevil mortality (%WM) at the 21st day and percent grain weight loss (%GWL) and F1 weevil progeny emergence (F1WPE) at the 55th day of oviposition. Data were collected on starch, oil and protein content to confer resistance to weevil damage. There were highly significant differences (P<0.001) in F1WPE and %GWL, (P<0, 01) in KV while no significant differences were observed for %WM and GH. The obtained data confirmed that, there was a positive and significant correlation between F1WPE and %GWL, while a negative and significant correlation was observed between F1WPE and %WM. Hybrids CZH131022, CZH131003, CZH132064, CZH132069 and CZH132068 were the top five weevil resistant while hybrids CZH132066, CZH132065, CZH132074, CZH131008 and CZH132063 were the top five most susceptible. 4150-4158 2017-08-16T16:17:38Z 2017-08-16T16:17:38Z 2015 Article http://hdl.handle.net/10883/18832 10.5897/AJAR2015.10252 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 Nairobi, Kenya Academic Journals 45 10 African Journal of Agricultural Research |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Controlled Temperature and Humidity Late Maturing Maize Hybrids MAIZE DROUGHT TOLERANCE GERMPLASM PEST RESISTANCE SITOPHILUS ZEAMAIS AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Controlled Temperature and Humidity Late Maturing Maize Hybrids MAIZE DROUGHT TOLERANCE GERMPLASM PEST RESISTANCE SITOPHILUS ZEAMAIS |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Controlled Temperature and Humidity Late Maturing Maize Hybrids MAIZE DROUGHT TOLERANCE GERMPLASM PEST RESISTANCE SITOPHILUS ZEAMAIS AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Controlled Temperature and Humidity Late Maturing Maize Hybrids MAIZE DROUGHT TOLERANCE GERMPLASM PEST RESISTANCE SITOPHILUS ZEAMAIS Mandizvidza, A. Setimela, P.S. Shorai Dari Evaluation of CIMMYT drought tolerant maize germplasm for resistance to weevil (Sitophilus zeamais Motschulky) damage |
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This study was carried out to evaluate and assess the phenotypic correlation between the primary and secondary weevil resistant traits of 20 drought tolerant (DT) late maturing maize hybrids (LHYB) to weevil (Sitophilus zeamais Motschulsky) damage. Well-conditioned experimental samples with uniform grain moisture content were infested with 32; 10 to 14 day old weevils in the controlled temperature and humidity (CTH) environment for 55 days. Data were collected on kernel volume (KV) and grain hardness (GH) at the start of the experiment, percent weevil mortality (%WM) at the 21st day and percent grain weight loss (%GWL) and F1 weevil progeny emergence (F1WPE) at the 55th day of oviposition. Data were collected on starch, oil and protein content to confer resistance to weevil damage. There were highly significant differences (P<0.001) in F1WPE and %GWL, (P<0, 01) in KV while no significant differences were observed for %WM and GH. The obtained data confirmed that, there was a positive and significant correlation between F1WPE and %GWL, while a negative and significant correlation was observed between F1WPE and %WM. Hybrids CZH131022, CZH131003, CZH132064, CZH132069 and CZH132068 were the top five weevil resistant while hybrids CZH132066, CZH132065, CZH132074, CZH131008 and CZH132063 were the top five most susceptible. |
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Article |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Controlled Temperature and Humidity Late Maturing Maize Hybrids MAIZE DROUGHT TOLERANCE GERMPLASM PEST RESISTANCE SITOPHILUS ZEAMAIS |
author |
Mandizvidza, A. Setimela, P.S. Shorai Dari |
author_facet |
Mandizvidza, A. Setimela, P.S. Shorai Dari |
author_sort |
Mandizvidza, A. |
title |
Evaluation of CIMMYT drought tolerant maize germplasm for resistance to weevil (Sitophilus zeamais Motschulky) damage |
title_short |
Evaluation of CIMMYT drought tolerant maize germplasm for resistance to weevil (Sitophilus zeamais Motschulky) damage |
title_full |
Evaluation of CIMMYT drought tolerant maize germplasm for resistance to weevil (Sitophilus zeamais Motschulky) damage |
title_fullStr |
Evaluation of CIMMYT drought tolerant maize germplasm for resistance to weevil (Sitophilus zeamais Motschulky) damage |
title_full_unstemmed |
Evaluation of CIMMYT drought tolerant maize germplasm for resistance to weevil (Sitophilus zeamais Motschulky) damage |
title_sort |
evaluation of cimmyt drought tolerant maize germplasm for resistance to weevil (sitophilus zeamais motschulky) damage |
publisher |
Academic Journals |
publishDate |
2015 |
url |
http://hdl.handle.net/10883/18832 |
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