Variance components and heritability of yield and yield-related traits in tepary bean (<i>Phaseolus acutifolius</i>)

Mhlaba, Zinhle Babongile; Shimelis, Hussein; Amelework, Beyene; Modi, Albert T.; Mashilo, Jacob

doi:10.1080/02571862.2018.1487593

Cited by 14 publications

(24 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, the lines evaluated in this study exhibited intermediate values of seeds per pod, which may be due to various factors such as high air temperatures, self-incompatibility and the lack of pollinators, since it has been reported that the number of seeds per pod can increase up to 15% with the presence of pollinators [ 4 , 41 ]. Additionally, the number of seeds per pod is highly heritable in Phaseolus [ 42 , 43 ], which is in accordance with our result ( H 2 = 0.67). Therefore, this trait is a good selection criterion for improving seed yields of Chilean runner bean lines.…”

Section: Resultssupporting

confidence: 91%

Morphological and Molecular Characterization of Selected Chilean Runner Bean (Phaseolus coccineus L.) Genotypes Shows Moderate Agronomic and Genetic Variability

Arriagada

Schwember

Greve

et al. 2021

Plants

View full text Add to dashboard Cite

The runner bean is the third most economically important Phaseolus species, which is cultivated on small-scale agriculture for the production of immature pods or to obtain dry seeds. However, despite the economic importance and agronomic potential of this species, the runner bean has been little studied from the genetic standpoint. Therefore, the main objective of this study was to characterize ten selected lines of runner bean obtained from Central (Santiago) and Southern (Valdivia and Villarica) Chile based on morphological and agronomic traits. In addition, the genetic variability of these lines was determined using 12 Inter-Simple Sequence Repeat (ISSR) markers to evaluate the potential of this germplasm for breeding and commercial purposes. As a result, the lines from Central Chile were characterized, and had a higher number of pods per plant compared to the Southern lines, although the size and weight of their seeds were lower. Moreover, a low level of genetic diversity (He = 0.251) was encountered in this population. Finally, this is one of the first studies that generate relevant and novel information on the morphological, agronomic and genetic characterization of the P. coccineus germplasm present in Chile.

show abstract

Section: Resultssupporting

confidence: 91%

Morphological and Molecular Characterization of Selected Chilean Runner Bean (Phaseolus coccineus L.) Genotypes Shows Moderate Agronomic and Genetic Variability

Arriagada

Schwember

Greve

et al. 2021

Plants

View full text Add to dashboard Cite

show abstract

“…In SSA, tepary bean collections are held by the National Plant Genetic Resource Centre of Botswana (35 accessions) comprising of unimproved landrace collections and genotypes sourced from CIAT. In South Africa, 50 tepary bean germplasm initially acquired from CIAT and elsewhere are available at the University of KwaZulu‐Natal's African Centre for Crop Improvement (ACCI) (Mhlaba, Amelework, Shimelis, Modi, & Mashilo, 2018b). These are primary and useful sources of genetic diversity for tepary bean improvement.…”

Section: Tepary Bean Genetic Resources For Drought Adaptation Breedingmentioning

confidence: 99%

“…These are primary and useful sources of genetic diversity for tepary bean improvement. Genetic diversity studies of these germplasm using molecular markers such as amplified fragment length polymorphism (AFLP) (Muñoz, Blair, Duque, Tohme, & Roca, 2004), simple sequence repeats (SSR) (Blair, Pantoja, & Carmenza, & Muñoz, 2012; Mhlaba et al, 2018b), single nucleotide polymorphism (SNP) (Gujari‐Verma et al, 2016) revealed the existence of low to moderate genetic differences among domesticated and wild tepary bean genotypes. Several studies identified genetically distinct complementary genotypes which are useful for genetic enhancement and cultivar development (Table 1).…”

Section: Tepary Bean Genetic Resources For Drought Adaptation Breedingmentioning

confidence: 99%

“…Other key agronomic traits such as PHI and pod partitioning index (PPI) which have proven to be useful for breeding in common bean could also be targeted for selection to increase yield gains of tepary bean under water‐limited environments. Phenological traits including days to flowering and maturity exhibited negative and poor correlations with seed yield but significant and negative correlations with NPPP, plant height and biomass accumulation (Mhlaba et al, 2018b). These traits are useful to select and to identify genotypes with drought‐escaping mechanisms but this may result in yield penalties through reduction of other yield components.…”

Section: Agronomic Traits Associated With Drought Tolerance and Yieldmentioning

confidence: 99%

See 1 more Smart Citation

Breeding tepary bean (Phaseolus acutifolius) for drought adaptation: A review

et al. 2020

Self Cite

View full text Add to dashboard Cite

Tepary bean (Phaseolus acutifolius A. Gray) is a relatively higher drought‐tolerant crop than common bean (P. vulgaris), serving as genetic resource for food and genetic enhancement of related legumes. Tepary bean production is hampered by cultivation of low yielding and abiotic stress‐susceptible cultivars. Targeted selection of agronomic, physiological and biochemical traits that maximizes yield gains using Phaseolus gene pool is useful to develop stress‐tolerant and high‐performing genotypes. The objective of this review is to provide breeding progress made regarding tepary bean improvement for drought adaptation. Agronomic, physiological and biochemical traits utilized for selection of drought‐tolerant genotypes are highlighted. Genetic and genomic resources developed for tepary bean or closely related species such as common bean useful for genetic analysis and breeding are discussed. Opportunities and challenges to facilitate breeding of tepary bean genotypes with improved abiotic stress adaptation are highlighted. This will enable development of drought‐tolerant tepary bean genotypes targeting selection of agronomic, physiological and biochemical traits. Use of genetically related and complementary Phaseolus species and marker‐assisted selection method is key to developing drought‐tolerant genotypes.

show abstract

“…Knowledge on the degree of association between yield contributing characters and yield is very essential for the development of high yielding genotypes in groundnut. Correlation studies provide an opportunity to study the magnitude and direction of association of yield with its components traits and also among various yield-related components (Faye et al 2015;Mhlaba et al 2018). Groundnut pod yield per plant exhibited significant positive correlation with grain yield per plant, number of kernel per plant, hundred kernel weight, number of pods per plant, harvest index and shelling percentage (Kushwah et al 2017;Zongo et al 2017a;Hampannavar et al 2018).…”

Section: Breeding Methods Of Groundnutmentioning

confidence: 99%

Groundnut (Arachis hypogaeaL.) improvement in sub-Saharan Africa: a review

Abady

Shimelis

Janila

et al. 2019

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

Self Cite

View full text Add to dashboard Cite

Groundnut (Arachis hypogaea L.) is a multipurpose legume crop widely cultivated in sub-Saharan Africa (SSA). However, yield levels of the crop has remained relatively low in SSA owing to a range of biotic, abiotic and socioeconomic constraints. A dedicated groundnut improvement programme integrating new tools and methodologies to breed varieties suitable for current and emerging agro-ecologies and market needs is essential for enhanced and sustainable groundnut production in SSA. The objective of this review is to highlight breeding progress, opportunities and challenges on groundnut improvement with regard to cultivar development and deployment in SSA in order to guide future improvement of the crop. The review analysed the role of new tools in breeding such as, high-throughput and automated phenotyping techniques, rapid generation advancement, single seed descent approach, marker-assisted selection, genomic selection, next-generation sequencing, genetic engineering and genome editing for accelerated breeding and cultivar development of groundnut.

show abstract

Variance components and heritability of yield and yield-related traits in tepary bean (Phaseolus acutifolius)

Cited by 14 publications

References 34 publications

Morphological and Molecular Characterization of Selected Chilean Runner Bean (Phaseolus coccineus L.) Genotypes Shows Moderate Agronomic and Genetic Variability

Morphological and Molecular Characterization of Selected Chilean Runner Bean (Phaseolus coccineus L.) Genotypes Shows Moderate Agronomic and Genetic Variability

Breeding tepary bean (Phaseolus acutifolius) for drought adaptation: A review

Groundnut (Arachis hypogaeaL.) improvement in sub-Saharan Africa: a review

Contact Info

Product

Resources

About