Genotypic variation and correlations between yield system traits and yield components in African landraces of bambara groundnut

Alake, Olusanya C; Ayo-Vaughan, M. A.

doi:10.1080/02571862.2016.1204017

Cited by 9 publications

(14 citation statements)

References 17 publications

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“…High heritability estimates obtained for yield, seed dry weight, pod dry weight, petiole length, plant height and days to maturity are indication of strong genetic control and the possibility of effective selection for these traits. A similar observation of high heritability has been previously reported on bambara groundnut by several authors (Alake & Ayo‐Vaughan, 2016; Jonah et al, 2012; Khan et al, 2020). High heritability in conjunction with high GA, gives better clues than individual characteristics (Khaliqi et al, 2021).…”

Section: Discussionsupporting

confidence: 87%

“…This revealed the ability to establish a successful selection strategy for bambara groundnut genetic resource conservation program which could be exploited for a future breeding programme. Several authors have reported the potential of bambara groundnut landraces for breeding purposes (Alake & Ayo‐Vaughan, 2016; Gbaguidi et al, 2018; Khan et al, 2021; Khan et al, 2022; Ntundu et al, 2006). The average obtained for most of the quantitative traits was similar to what has been reported by others in the previous studies on this crop.…”

Section: Discussionmentioning

confidence: 99%

“…The estimation of genetic parameters of plant traits in breeding populations aids in determining a breeding strategy that could be used to develop productive and resilient genotypes with acceptable end‐user qualities. The relative variability of genotypic variances is best expressed as GCV, which determines the extent of variation available for selection (Alake & Ayo‐Vaughan, 2016). The PCV result in this study are higher than the corresponding GCV in all the studied traits, implying environmental influence on the expression of the traits.…”

Section: Discussionmentioning

confidence: 99%

“…The PCV result in this study are higher than the corresponding GCV in all the studied traits, implying environmental influence on the expression of the traits. Several authors have reported the influence of the environment on the growth and yield of bambara groundnut (Alake & Ayo‐Vaughan, 2016; Ibrahim et al, 2022; Khaliqi et al, 2021; Khan et al, 2021). Slight differences were observed between PCV and GCV for most of the studied traits.…”

Section: Discussionmentioning

confidence: 99%

“…In spite of its nutritional, health and environmental relevance, bambara groundnut cultivation is principally dependent on landraces that are commonly low yielders (Alake & Ayo‐Vaughan, 2016). The low productivity of this crop has been attributed to problems like unavailability of improved varieties, limited awareness on the importance of the crop among the growers and lack of introduction of high‐yielding genotypes in the areas of its cultivation (Odongo et al, 2015; Uba et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Exploring phenotypic variation of diverse bambara groundnut (Vigna subterranea L) origin and development of mini‐core collection for future breeding

Uba

Oselebe

Tesfaye

et al. 2023

Food and Energy Security

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Understanding the phenotypic variation and designing a mini-core collection is an efficient method to accelerate the genetic gain of bambara groundnut. A collection of 300 bambara groundnut landraces from 25 different countries of origin sourced from gene banks were used to analyze phenotypic variability among the landraces and develop a mini-core collection for future breeding. The landraces were evaluated in alpha lattice design with two replications for 2 years (2019 and 2020). The results showed highly significant differences (p < 0.001) among the bambara groundnut landraces for all the studied traits implying the selection of landraces with better agronomic traits could be achieved from the crop genetic pool. In addition, landrace x year interactions were significant for studied traits, except for shelling percentage and number of seeds per pod. The genotypic coefficient of variation values were high for most yield component traits, with the highest (65.39%) value obtained on seed dry weight. Furthermore, high heritability in conjunction with high genetic advance obtained in seed dry weight, pod dry weight, petiole length and plant height implies that these traits are majorly controlled by additive genetic action and could be improved through selection. Highly significant and positive correlations of yield were found with seed dry weight, pod dry weight, number of pod per plant, number of leaves, petiole length and plant height. A mini-core collection of 60 landraces (20%) was developed that represents the entire collection using Core Hunter algorithm. In general, the study provides insight into bambara groundnut germplasm that would enhance cultivar development and sustains the utilization of the crop. In addition, the mini-core collection established in the present study could be exploited for future bambara groundnut improvement efforts.

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Section: Discussionsupporting

confidence: 87%