Molecular characterisation of common bean (Phaseolus vulgaris L.) accessions from Southwestern Uganda reveal high levels of genetic diversity

Buah, Stephen; Buruchara, Robin A.; Okori, P.

doi:10.1007/s10722-017-0490-8

Cited by 11 publications

(8 citation statements)

References 36 publications

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“…Susi (2014) suggested trade-offs and co-infection to explain host–pathogen evolutionary relationships in plants. The time (400 years) since introduction of common beans into East-Africa (Gepts and Bliss, 1988; Buah et al , 2017), was adequate for emergency of mutant pathogens different from ones in the centre of bean domestications in Latin America (Gepts and Bliss, 1988).…”

Section: Discussionmentioning

confidence: 99%

Genetic variation, Heritability estimates and GXE effects on yield traits of Mesoamerican common bean (Phaseolus vulgaris L) germplasm in Uganda

Okii¹,

Mukankusi²,

Sebuliba³

et al. 2017

Plant Genet. Resour.

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Germplasm of common beans from the Mesoamerican gene pool races: Durango, Jalisco, Mesoamerica and Guatemala have highest genetic variation for the crop's improvement. The objective was to assign 50 common bean germplasm in Uganda into its gene pool races based on analyses of population structure. Secondly, to estimate heritability and effects of genotype × environment (GXE) interaction on common bean agronomic and yield traits in space and time. Sample genomic DNA was amplified in 2011 with 22 Simple sequence repeat markers (SSRs) and alleles separated using capillary electrophoresis. Field evaluations were conducted in 2010 and 2011 at NaCRRI and 2015 at CIAT – Kawanda. Multivariate analyses of SSRs data identified four subgroups within the germplasm: K4.1–K4.4, with corresponding Wrights fixation indices (FST) as 0.1829 for K4.1, 0.1585 for K4.4, 0.1579 for K4.2 and least for K4.3 at 0.0678. Gene pool race admixtures in the population (14%) were notable and attributed to gene flow. Four superior parents currently used in improving resistance to major diseases grouped as; Jalisco for MLB49-89A; Mesoamerica for MCM5001 and G2333; Durango for MEXICO 54. Heritability values for yield traits estimated using phenotypic data from above fixed parents, was above 0.81. Season and location had significant effect (P < 0.05) on numbers of: flower buds per inflorescence, pod formation and weight of 100 seeds. The findings will improve understanding of co-evolutionary relationships between bean hosts and pathogens for better disease management and will broaden the germplasm base for improving other tropical production constraints.

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Section: Discussionmentioning

confidence: 99%

Genetic variation, Heritability estimates and GXE effects on yield traits of Mesoamerican common bean (Phaseolus vulgaris L) germplasm in Uganda

Okii¹,

Mukankusi²,

Sebuliba³

et al. 2017

Plant Genet. Resour.

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“…In addition, variation within localities may be due to temporal heterogeneity associated with short-term climatic variation, with different varieties performing better in different seasons [ 53 ]. Finally, germplasm exchange among geographical regions may also contribute to this pattern [ 51 , 54 ].…”

Section: Discussionmentioning

confidence: 99%

Morphological and molecular characterization of variation in common bean (Phaseolus vulgaris L.) germplasm from Azad Jammu and Kashmir, Pakistan

et al. 2022

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Phaseolus vulgaris, an essential food and source of protein, is cultivated across the world. This study was carried out to investigate the diversity and population structure of 34 P. vulgaris landrace accessions collected from the Azad Jammu and Kashmir (AJ&K) regions of Pakistan. The samples were analyzed both morphologically and using genetic variation identified through RNA sequencing. Our results indicated that most genetic variation occurs among local accessions, with little genetic variation occurring between geographical regions. In addition, the accessions fell into two major genetic groups. Morphological analysis revealed that these two genetic groups differ in a number of quantitative traits, including seed length, seed width, and seed weight. One accession, DUD-11, appears to be a mixture of the two major groups genetically as well as morphologically. Among the other accessions, DUD-8, RWK-2, and NGD-1 depicted particularly high seed weight along with higher seed length, seed width, and seed yield per plant. We suggest focusing on these accessions in future breeding programs. More generally, our results provide baseline data that will be useful for crop improvement and effective cultivation practices in Pakistan.

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“…Visual observation made on the fifteen genotypes revealed broadly ovate leaflets with acuminate apices, the petial of the terminal leaflets were longer than those below. Past research made by Buah et al (2017) and Maras et al (2016) classified bracteole shape of plant leaves into; cordate, ovate, lanceolate and triangle. Therefore the recent research characterized the fifteen bean genotypes under field study as having one variable (100%), which was ovate leave shape and therefore there was no significance of leaf shapes in anthracnose resistance.…”

Section: Bracteolate Shape Classificationmentioning

confidence: 99%

Morphological traits associated with anthracnose (Colletotrichum lindemuthianum) resistance in selected common bean (Phaseolus vulgaris L.) genotypes

Kiptoo¹,

Kinyua²,

Matasyoh³

et al. 2020

Afr. J. Plant Sci.

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Common bean is among the most important legume crop for protein source in people's diet globally and including Kenya. Anthracnose is a common disease of legumes that causes yield loss of up to 90-100%. The aim of the study is to investigate the morphological traits associated with anthracnose resistance in selected common bean genotypes in Kenya. The study was done in three varied agroecological zones; University of Eldoret, Bungoma and Busia. Fifteen genotypes were evaluated on field experiment to ascertain morphological traits associated with anthracnose resistance. Field experiment was done in a random complete block design. Data were collected on morphological traits and subjected to analysis of variance in SAS version 9.1. The genotypes, Ciankui, Tasha, KK15, KK8, Miezi mbili and Chelalang showed morphological traits that were significantly (P ≤ 0.05) associated with anthracnose resistance, and also with high grain yields of 1.5 to 2.0 t/ha. Morphological traits associated with common bean anthracnose resistance included Leaf width, leaf length, length of fifth internode of the stems, bracteolate size classification and flower colour. It is recommended that management of anthracnose by use of resistant common bean genotype seeds is essential to provide increased bean yields globally and in Kenya.

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Molecular characterisation of common bean (Phaseolus vulgaris L.) accessions from Southwestern Uganda reveal high levels of genetic diversity

Cited by 11 publications

References 36 publications

Genetic variation, Heritability estimates and GXE effects on yield traits of Mesoamerican common bean (Phaseolus vulgaris L) germplasm in Uganda

Genetic variation, Heritability estimates and GXE effects on yield traits of Mesoamerican common bean (Phaseolus vulgaris L) germplasm in Uganda

Morphological and molecular characterization of variation in common bean (Phaseolus vulgaris L.) germplasm from Azad Jammu and Kashmir, Pakistan

Morphological traits associated with anthracnose (Colletotrichum lindemuthianum) resistance in selected common bean (Phaseolus vulgaris L.) genotypes

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