The demand for cowpea (Vigna unguiculata L. Walp) is higher than supply in Ghana due to low yields caused by pathogenic diseases, predominantly rust disease. The use of rust resistant cultivars is the most effective method to control cowpea rust. Genetic variations among cowpea genotypes may be potential sources of rust resistance to control cowpea rust and increase cowpea yield and production in Ghana. The study assessed rust disease incidence and severity among cowpea genotypes and determined resistance to cowpea rust under field conditions. Twenty-four cowpea genotypes were sowed in four agro-ecological zones in two cropping seasons in Ghana. Cowpea rust incidence, severity, area under disease progress curve (AUDPC) and relative area under disease progress curve (rAUDPC) were significantly (p < 0.05) higher in the semi-deciduous forest and minor cropping season compared with deciduous forest, coastal savannah, Sudan savannah and major cropping season. The cowpea genotypes also showed significant differences (p < 0.05) in response to rust infection. Positive and negative correlations existed in rust incidence, severity, AUDPC and rAUDPC within the agro-ecological zones and cropping seasons. The differences observed were due to variations in climatic conditions and genetic composition of the cowpea genotypes. Five cowpea genotypes were better slow rusting, eleven cowpea genotypes were slow rusting and eight cowpea genotypes were fast rusting. Interestingly, eleven cowpea genotypes showed resistance and eight cowpea genotypes showed moderate resistance to cowpea rust. The rust resistant cowpea genotypes identified in this work can be recommended for farmers to cultivate and used in breeding programmes to further improve the crop. This will maximize yields and increase cowpea production particularly in rust prone areas.
| DOI | 10.11648/j.plant.20180604.11 |
| Published in | Plant (Volume 6, Issue 4, December 2018) |
| Page(s) | 67-74 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Cowpea, Cowpea Rust, Rust Disease Incidence, Rust Disease Severity, Rust Resistance
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APA Style
Theophilus Abonyi Mensah, Sheila Matilda Ayorkor Tagoe, Aaron Tettey Asare, Daniel Sakyi Agyirifo. (2019). Screening of Cowpea (Vigna unguiculata L. Walp) Genotypes for Rust (Uromyces phaseoli var. vignae) Resistance in Ghana. Plant, 6(4), 67-74. https://doi.org/10.11648/j.plant.20180604.11
ACS Style
Theophilus Abonyi Mensah; Sheila Matilda Ayorkor Tagoe; Aaron Tettey Asare; Daniel Sakyi Agyirifo. Screening of Cowpea (Vigna unguiculata L. Walp) Genotypes for Rust (Uromyces phaseoli var. vignae) Resistance in Ghana. Plant. 2019, 6(4), 67-74. doi: 10.11648/j.plant.20180604.11
AMA Style
Theophilus Abonyi Mensah, Sheila Matilda Ayorkor Tagoe, Aaron Tettey Asare, Daniel Sakyi Agyirifo. Screening of Cowpea (Vigna unguiculata L. Walp) Genotypes for Rust (Uromyces phaseoli var. vignae) Resistance in Ghana. Plant. 2019;6(4):67-74. doi: 10.11648/j.plant.20180604.11
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Download@article{10.11648/j.plant.20180604.11,
author = {Theophilus Abonyi Mensah and Sheila Matilda Ayorkor Tagoe and Aaron Tettey Asare and Daniel Sakyi Agyirifo},
title = {Screening of Cowpea (Vigna unguiculata L. Walp) Genotypes for Rust (Uromyces phaseoli var. vignae) Resistance in Ghana},
journal = {Plant},
volume = {6},
number = {4},
pages = {67-74},
doi = {10.11648/j.plant.20180604.11},
url = {https://doi.org/10.11648/j.plant.20180604.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.plant.20180604.11},
abstract = {The demand for cowpea (Vigna unguiculata L. Walp) is higher than supply in Ghana due to low yields caused by pathogenic diseases, predominantly rust disease. The use of rust resistant cultivars is the most effective method to control cowpea rust. Genetic variations among cowpea genotypes may be potential sources of rust resistance to control cowpea rust and increase cowpea yield and production in Ghana. The study assessed rust disease incidence and severity among cowpea genotypes and determined resistance to cowpea rust under field conditions. Twenty-four cowpea genotypes were sowed in four agro-ecological zones in two cropping seasons in Ghana. Cowpea rust incidence, severity, area under disease progress curve (AUDPC) and relative area under disease progress curve (rAUDPC) were significantly (p < 0.05) higher in the semi-deciduous forest and minor cropping season compared with deciduous forest, coastal savannah, Sudan savannah and major cropping season. The cowpea genotypes also showed significant differences (p < 0.05) in response to rust infection. Positive and negative correlations existed in rust incidence, severity, AUDPC and rAUDPC within the agro-ecological zones and cropping seasons. The differences observed were due to variations in climatic conditions and genetic composition of the cowpea genotypes. Five cowpea genotypes were better slow rusting, eleven cowpea genotypes were slow rusting and eight cowpea genotypes were fast rusting. Interestingly, eleven cowpea genotypes showed resistance and eight cowpea genotypes showed moderate resistance to cowpea rust. The rust resistant cowpea genotypes identified in this work can be recommended for farmers to cultivate and used in breeding programmes to further improve the crop. This will maximize yields and increase cowpea production particularly in rust prone areas.},
year = {2019}
}
TY - JOUR T1 - Screening of Cowpea (Vigna unguiculata L. Walp) Genotypes for Rust (Uromyces phaseoli var. vignae) Resistance in Ghana AU - Theophilus Abonyi Mensah AU - Sheila Matilda Ayorkor Tagoe AU - Aaron Tettey Asare AU - Daniel Sakyi Agyirifo Y1 - 2019/01/10 PY - 2019 N1 - https://doi.org/10.11648/j.plant.20180604.11 DO - 10.11648/j.plant.20180604.11 T2 - Plant JF - Plant JO - Plant SP - 67 EP - 74 PB - Science Publishing Group SN - 2331-0677 UR - https://doi.org/10.11648/j.plant.20180604.11 AB - The demand for cowpea (Vigna unguiculata L. Walp) is higher than supply in Ghana due to low yields caused by pathogenic diseases, predominantly rust disease. The use of rust resistant cultivars is the most effective method to control cowpea rust. Genetic variations among cowpea genotypes may be potential sources of rust resistance to control cowpea rust and increase cowpea yield and production in Ghana. The study assessed rust disease incidence and severity among cowpea genotypes and determined resistance to cowpea rust under field conditions. Twenty-four cowpea genotypes were sowed in four agro-ecological zones in two cropping seasons in Ghana. Cowpea rust incidence, severity, area under disease progress curve (AUDPC) and relative area under disease progress curve (rAUDPC) were significantly (p < 0.05) higher in the semi-deciduous forest and minor cropping season compared with deciduous forest, coastal savannah, Sudan savannah and major cropping season. The cowpea genotypes also showed significant differences (p < 0.05) in response to rust infection. Positive and negative correlations existed in rust incidence, severity, AUDPC and rAUDPC within the agro-ecological zones and cropping seasons. The differences observed were due to variations in climatic conditions and genetic composition of the cowpea genotypes. Five cowpea genotypes were better slow rusting, eleven cowpea genotypes were slow rusting and eight cowpea genotypes were fast rusting. Interestingly, eleven cowpea genotypes showed resistance and eight cowpea genotypes showed moderate resistance to cowpea rust. The rust resistant cowpea genotypes identified in this work can be recommended for farmers to cultivate and used in breeding programmes to further improve the crop. This will maximize yields and increase cowpea production particularly in rust prone areas. VL - 6 IS - 4 ER -
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