Determination of lethal (LD) and growth reduction (GR)doses on acute and chronic gamma- irradiated Bambara groundnut [Vigna subterranea (L.) Verdc.]varieties

Muhammad, Isma’ila; Rafii, Mohd Y.; Nazli, Muhamad Hazim; Ramlee, Shairul Izan; Harun, Abdul Rahim; Oladosu, Yusuff

doi:10.1080/16878507.2021.1883320

Cited by 16 publications

(15 citation statements)

References 32 publications

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“…This crop is native to Sub-Saharan Africa, and it plays a socioeconomic role in semi-arid regions of the continent [3]. In comparison to cereals (pearl millet, sorghum and maize) and other legumes (peanuts and cowpeas), the research on this crop is limited [4]. An effective hybridization technique for Bambara groundnut has only recently been established; one of the major reasons for this delay is that most cultivated Bambara groundnut uses landraces with low yield [1].…”

Section: Introductionmentioning

confidence: 99%

“…An effective hybridization technique for Bambara groundnut has only recently been established; one of the major reasons for this delay is that most cultivated Bambara groundnut uses landraces with low yield [1]. The extent of the genetic variation in the breeding program and the magnitude of the yield trait heritability determine crop yield increases [4]. Therefore, genetic variation can be an option for the selection of appropriate parents.…”

Section: Introductionmentioning

confidence: 99%

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Genetic Analysis and Selection Criteria in Bambara Groundnut Accessions Based Yield Performance

et al. 2021

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The knowledge of genetic variability and breeding techniques is crucial in crop improvement programs. This information is especially important in underutilized crops such as Bambara groundnut, which have limited breeding systems and genetic diversity information. Hence, this study evaluated the genetic variability and established the relationship between the yield and its components in Bambara groundnut based on seed weight using multivariate analysis. A field trial was conducted in a randomized complete block design with three replications on 28 lines. Data were collected on 12 agro-morphological traits, and a statistical analysis was conducted using SAS version 9.4 software, while the variance component, genotypic and phenotypic coefficient variation, heritability, and genetic advance values were estimated. A cluster analysis was performed using NT-SYS software to estimate the genetic relations among the accessions. The results showed significant variability among the accessions based on the yield and yield component characteristics. The evaluated lines were grouped into seven primary clusters based on the assessed traits using the UPGMA dendrogram. Based on the overall results, G5LR1P3, G1LR1P3, G4LR1P1, G2SR1P1 and G3SR1P4 performed the best for the yield and yield components. These improved lines are recommended for large-scale evaluation and utilization in future breeding programs to develop high-yield Bambara groundnut varieties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic Analysis and Selection Criteria in Bambara Groundnut Accessions Based Yield Performance

et al. 2021

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“…Thus, identifying the LD 50 and GR 50 is the preliminary stage in a mutation breeding method. Tetali et al 21 reported that the optimum dose for Indian grapes was 30 Gy, whereas another study found that the optimal dose for Indian cultivars was 15–25 Gy 20 , likewise the lethal doses of gamma rays for Turkish cultivars were 35 and 45 Gy 20 . Reviews of the literature indicate that there is a wide variation in the optimal dose among grape cultivars; as a result, these variations may be related to the genetic background of the cultivar.…”

Section: Introductionmentioning

confidence: 99%

“…According to Alvarez-Holgun et al 16 the dose at which 50% of the irradiated samples die (LD 50 ) or when 50% of plant growth has declined (GR 50 ) increases the chance of producing viable and valuable mutants for the breeding program by using mutagenesis techniques. However, a new study demonstrated that the dose range below and above the LD 50 (LD 25% and LD 75% ) and GR 50 (GR 25% and GR 75% ) was critical for calculating the optimal dose whenever using γ irradiation 21 . Most earlier research on fruit trees specific grapes focused on determining the optimal dose by evaluating the survival rate (LD 50 ) and morphological changes of the cutting's shoot and leaves in response to γ radiation dose.…”

Section: Introductionmentioning

confidence: 99%

Determination of optimum dose based of biological responses of lethal dose (LD25, 50, 75) and growth reduction (GR25, 50, 75) in ‘Yaghouti’ grape due to gamma radiation

Ghasemi-Soloklui

Kordrostami

Karimi

2023

Sci Rep

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Ionizing radiations are a helpful technique and have improved financial potential in developing new and unique commercially important fruit tree varieties. The ‘Yaghouti’ grape cuttings were treated with 0 (control), 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100 Gy gamma ray (γ) doses. The objectives of this study were to (1) investigate the effects of γ radiation on the survival rate, leaves, shoots, and root morphometric traits after γ irradiation; (2) Measurement of the 25, 50, and 75% lethal dose and 25, 50, and 75% growth reduction dose based on leaves, shoots, and root morphometric characteristics to estimate grape radiosensitivity; (3) Ultimately, determining the optimum dose of γ irradiation based biological responses (LD25, 50, 75 and GR25, 50, 75) in Yaghouti grape. The findings demonstrate that the lethal dose of the ‘Yaghouti’ was 18 Gy for LD25, 30 Gy for LD50, and 48 Gy for LD75, respectively. Furthermore, our findings showed that increasing the γ dose had a harmed ngative effect on vine growth, as evidenced by a decrease in plant height, root number, root volume, leaf area, aerial biomass, root biomass, and internode number of the ‘Yaghouti’ grape plants. Our results showed that between the aerial parts of vines, the leaf area and aerial biomass had higher radiosensitivity than plant height and other aerial parts of the plants based on data from GR25, GR50, and GR75. Moreover, GR studies of root characteristics revealed that root number and biomass root had higher radiation sensitivity than root volume. According to biological responses (LD25, 50, 75 and GR25, 50, 75) in the ‘Yaghouti’ grape, 30 Gy of γ radiation is the optimum dose for preliminary mutagenesis investigations.

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“…Improvement of traits in bambara groundnut could be achieved through phenotypic selection with the valuation of different genetic parameter analyses. Muhammad et al (2021) noted that the extent of genetic variation in the breeding program and the magnitude of the heritability of yield traits determine crop yield increase. Heritability, phenotypic coefficient of variation (PCV), genotypic coefficient of variation (GCV) and genetic advance (GA) are some of the most common tools that assist breeders in determining the genetic variability of the studied germplasm and designing the breeding strategy to improve certain traits.…”

Section: Introductionmentioning

confidence: 99%

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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Determination of lethal (LD) and growth reduction (GR)doses on acute and chronic gamma- irradiated Bambara groundnut [Vigna subterranea (L.) Verdc.]varieties

Cited by 16 publications

References 32 publications

Genetic Analysis and Selection Criteria in Bambara Groundnut Accessions Based Yield Performance

Genetic Analysis and Selection Criteria in Bambara Groundnut Accessions Based Yield Performance

Determination of optimum dose based of biological responses of lethal dose (LD25, 50, 75) and growth reduction (GR25, 50, 75) in ‘Yaghouti’ grape due to gamma radiation

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

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