A Review on Genetic Resources, Diversity and Agronomy of African Yam Bean (Sphenostylis stenocarpa (Hochst. Ex A. Rich.) Harms): A Potential Future Food Crop

Daniel, Adewale B.; Celestina, Odoh N.

doi:10.5539/sar.v2n1p32

Cited by 16 publications

(9 citation statements)

References 32 publications

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“…The accessions exhibited a widely divergent variability for both physical and physiological traits. The wide variability in the performance of the African yam bean accessions across the seed physical and physiological quality tests corroborates the report of Adewale and Odoh (2013) that Nigeria is among the centers of diversity of African yam bean. Olasoji, Akande, and Owolade, (2011) also reported genetic variability for seed quality among 10 accessions of AYB studied.…”

Section: Discussionsupporting

confidence: 86%

Screening of African Yam Bean Accessions for Imbibition and Seed Physiological Quality

Nnamani¹,

Awosanmi²,

Ajayi³

2021

JAS

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African yam bean is a nutritionally-important but neglected food crop with several health benefits. But its large scale cultivation and consumption are still limited by lack of systematic genetic improvement and breeding programme for the crop. Preliminary studies have established that the inherent field establishment potential of African yam bean is low. Hence the need to screen available accessions to identify those with outstanding seed physiological qualities for selection as parental materials for further improvement. Thirty-four African yam bean accessions were collected from different farmers in five states of Southeastern Nigeria. Seed physiological quality (viability and vigour) was assessed using hundred seed weight, water imbibition, standard germination, accelerated ageing and conductivity tests. The mean squares due to varietal effect were significant (p < 0.05) for germination index and highly significant (p < 0.01) for all other traits. Accessions ENAGag, ENAGmg 1 and, ENAGmg 2 had high standard (> 80%) and accelerated ageing (> 70%) germination percentages. Only 11 of the accessions had an accelerated ageing germination percentage of above 50%. All but one of the 34 accessions had conductivity values less than 5.00 µScm-1 g-1. On the average, African yam bean seeds require up to 76.9% moisture of their initial weight over a period of approximately 53 hours prior for the commencement of germination process. Accessions ENAGag, ENAGmg 1, ENAGmg 2, ENNKob, ENNSog, IMISis, IMOKeo 1 and IMOKeo 3 were outstanding and are therefore potential candidates for genetic improvement of seed quality in African yam bean.

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Section: Discussionsupporting

confidence: 86%

Screening of African Yam Bean Accessions for Imbibition and Seed Physiological Quality

Nnamani¹,

Awosanmi²,

Ajayi³

2021

JAS

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“…However, there is low awareness of its productive and nutritional value. Subsistence production may have been caused by the low acceptability of African yam bean as a valuable crop among middle-aged farmers in Africa [19][20][21]. It had its origin in Ethiopia but is now widely cultivated in tropical Africa, especially West Africa, in Cameroon, Ghana, and Nigeria [22].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Nutritional and Antinutritional Properties of African Yam Bean (Sphenostylis stenocarpa(Hochst ex. A. Rich.) Harms.) Seeds

Adegboyega

Abberton

AbdelGadir

et al. 2020

Journal of Food Quality

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African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) Harms) is an annual legume with the capacity to produce bean seeds in a pod and produce tubers with varying seed patterns and colors. It is suggested to have the potential to significantly boost food security in sub-Saharan Africa due to its considerable nutritional qualities but still yet underutilized. Many farmers show limited interest in its production owing to limited knowledge of its nutritional profile, income generation capacity for small-holder farmers’, processing, and other related utilization concerns. This study evaluated the proximate and antinutrient composition of processed and unprocessed seeds of African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) Harms.). Seeds were harvested from the experimental research field consisting of 50 accessions at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. They were divided into two portions; the first was processed by oven drying at 60°C for 24 hours and the second was left raw. There were significant differences (P<0.05) in the levels of proximate and antinutrient in the forms in which the samples were analyzed. TSs104 had the highest protein content of 25.08%, while the lowest was TSs68 (20.50%). However, in the unprocessed seed, protein content ranged between 24.93% (TSs38) and 19.13% (TSs11). Both processed and unprocessed seeds had high carbohydrate contents. In processed seeds, TSs9 (62.93%) had the highest percentage and TSs1 (29.64%) recorded the lowest. In unprocessed seed, the percentage ranged between 67.36% (TSs4) and 54.23% (TSs38). The observed variation may suggest possible suitability of seed for various end-use products and targeted breeding programs for crop improvements. In sub-Saharan Africa, this lesser-known legume could be adapted as a promising food crop in combating protein-energy malnutrition.

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“…Few among others included the studies by; [14] that investigated the impact of climate change on Sphenostylis stenocarpa in relation to sustainability and conservation. More so, [20] reviews the nexus among genetic resources, diversity and agronomy of African yam bean. Consequently, phenotypic, genotypic and environmental trait correlations with yield are also examined in the literature [21,22].…”

Section: Introductionmentioning

confidence: 99%

“…In studies using S. stenocarpa, several reports on seed genetic variability, path coefficients, correlations, morphoseed metrics have been archived by the research efforts of [20,[25][26][27][28]. These reports are experimental, using genotypes with a limited genetic origin, planting environments as well as placing no emphasis on agro-nutritional trait selection.…”

Section: Introductionmentioning

confidence: 99%

Selecting Yield and Nutritional Traits in Sphenostylis stenocarpa Landraces for Food Improvement

Aremu

Abberton

Adebiyi

et al. 2020

FNA

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Background: Sphenostylis stenocarpa is an underexploited African indigenous food crop that is enriched in nutritional quality. Objective: Exploring the robust genetic base of this landrace can help to maximize the benefit of the agricultural sector on the economy through production that is enhanced by packaging and patent. This as well will increase the quality of food production and promote African campaign on food sustainability. Methods: Upon this, this research made use of multiple statistics to identify S. stenocarpa yield and nutritional trait relatedness that supported selection for maximum yield and nutritional trait output. Yield and related traits including protein and oil contents of twenty-three Sphenostylis stenocarpa landraces were studied under a four year planting seasons in Teaching and Research farm of Landmark University, Nigeria. Results: Trait variances from Landrace × Year (L × Y) interaction, Principal Component and Cluster analyses were evaluated and the variation patterns were identified. Some vegetative (maturity phase, height and branching) and yield traits (Pod traits, seed yield and oil content) correlated significantly (p < 0.05) in the L × Y interactions. This suggests the usefulness of these traits in improving S. stenocarpa grain and oil quality yield. Tuber and nodule yield including protein content did not differ significantly in the variance table. Conclusion: The result indicates that one location trial is insufficient to determine such trait performance. The first four PCs that accounted for 51 percent of the total variations were traceable to branching, maturity date, pod numbers, seed and oil content as main contributors to yield.

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A Review on Genetic Resources, Diversity and Agronomy of African Yam Bean (Sphenostylis stenocarpa (Hochst. Ex A. Rich.) Harms): A Potential Future Food Crop

Cited by 16 publications

References 32 publications

Screening of African Yam Bean Accessions for Imbibition and Seed Physiological Quality

Screening of African Yam Bean Accessions for Imbibition and Seed Physiological Quality

Evaluation of Nutritional and Antinutritional Properties of African Yam Bean (Sphenostylis stenocarpa(Hochst ex. A. Rich.) Harms.) Seeds

Selecting Yield and Nutritional Traits in Sphenostylis stenocarpa Landraces for Food Improvement

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