Studies on morphological and yield parameters of three varieties of Nigerian okra [Abelmoschus esculentus (L.) Moench]

Falusi, O. A.

doi:10.5897/jhf11.072

Cited by 5 publications

(2 citation statements)

References 5 publications

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“…However, the heritability of pod width was 17.7 time higher than for pod length suggesting that any effect of environment on the genotype will affect pod width and consequently pod size and yield. Plant parameters such as pod size are important in the selection of okra species for breeding programs to improve its yield (Falusi 2012). The high discriminatory ability of Gombo caféier may also have been in uenced by longer crop cycle as duration to commercial maturity was longest, while that of other genotypes of the same species were among the shortest.…”

Section: Discussionmentioning

confidence: 99%

“…Hence, crop cycle shows overwhelming differences following cultivar, locality and season (Grubben and Denton 2004). Okra is grown annually and with a cycle from one to ve months, and varies according to species (Falusi, 2012). In WCA, the varieties cultivated in home gardens and resource-poor farmers' farms often include the two species of A. esculentus and A. caillei, with the former dominating in dry climates, and the latter in humid climates.…”

Section: Discussionmentioning

confidence: 99%

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New okra germplasm for the management of aphids in the diverse ecological landscape of Central Africa

Abang,

Sriniva,

Kekeunu

et al. 2023

Preprint

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Ten okra accessions reported as resistant to aphids were compared in four agro-ecological zones of Cameroon with local varieties used by farmers under field conditions. This study was carried out over two seasons (March - July and September - December 2014) in four locations, representing four Cameroon agro-ecologies. The essence was to evaluate yield performance and test resistance to Aphis gossypii under different agro-ecologies. Aphid populations and yield parameters were evaluated. The R software package metan was activated to do analysis of stability using the multiple environment data. For all data, Breeding Values were predicted using Linear mixed model by performing best linear unbiased prediction on each genotype and for genotype by location interactions. The area under infestation pressure curve was calculated using aphid count data and the values used to estimate mean and standard deviation, and subjected to resistance analysis. For aphid abundance the lowest breeding value (-2.20) was for the Local and the highest (+ 2.33) for the most susceptible improved genotype. Two of the genotypes, Local (the most susceptible) and VI060794 (one of the moderately resistant) had the highest yield prediction per hectare and pods per plant. Dissemination of high-yielding and aphid resistant genotypes such as VI060794 stands the change of alleviating poverty and nutrient security within the sub region of Central Africa through reduction in cost of production from use of pesticide. The superior performance of VI060794 across ecological zones could be integrated in IPM of aphids and breeding to improve the performance of local germplasms.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

New okra germplasm for the management of aphids in the diverse ecological landscape of Central Africa

Abang,

Sriniva,

Kekeunu

et al. 2023

Preprint

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Interactive Effects of Genotype and Nitrogen on the Phenology and Yield Determination of Okra [Abelmoschus esculentus (L.)]

Fatima

Khan

Nadeem

et al. 2019

Int. J. Plant Prod.

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New okra genotypes for the management of aphids (Hemiptera: Aphididae) in the diverse ecological landscapes of Central Africa

Abang,

Ramasamy,

Hanna

et al. 2024

Journal of Economic Entomology

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Various aphid species, including Aphis gossypii Glover (Hemiptera: Aphididae), are considered important pests of okra and other vegetables. Previous studies under 1 environment in Cameroon, Central Africa, had found multiple okra genotypes with resistance to A. gossypii. However, the stability and yield performance of the “resistant” genotypes across different environments were unknown. Ten previously identified aphid-resistant okra genotypes along with 1 commercial variety and a local landrace (specific to a given location) were compared during 2 seasons in replicated trials in 4 agro-ecological zones of Cameroon that also represent large areas of Central Africa. Aphid populations and okra yield parameters were evaluated. Breeding values were predicted using a linear mixed model for all data, and genotypes by location interactions were identified. The area under the infestation pressure curve (AUIPC) was calculated using aphid count data and subjected to resistance analysis. The Local—the most susceptible with the highest breeding value (+2.33)—and VI060794—one of the moderately resistant—genotypes had the highest yield per hectare. The only resistant genotype VI036213 had the lowest breeding value (–2.20). Genotype × location interactions were significant for yield, pod width, and plant height, while location variance was significant for all parameters evaluated. When considering that higher aphid densities could lead to greater pesticide use and, therefore higher production and environmental costs, the high-yielding VI060794—with moderate aphid resistance across multiple environments—presents an alternative or substitute for local landraces across multiple agro-ecologies of Cameroon and (by extension) Central Africa.

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Studies on morphological and yield parameters of three varieties of Nigerian okra [Abelmoschus esculentus (L.) Moench]

Cited by 5 publications

References 5 publications

New okra germplasm for the management of aphids in the diverse ecological landscape of Central Africa

New okra germplasm for the management of aphids in the diverse ecological landscape of Central Africa

Interactive Effects of Genotype and Nitrogen on the Phenology and Yield Determination of Okra [Abelmoschus esculentus (L.)]

New okra genotypes for the management of aphids (Hemiptera: Aphididae) in the diverse ecological landscapes of Central Africa

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