Linear  discriminant analysis of  structure  within  African eggplant   ‘Shum’

Sseremba, Godfrey; Tongoona, Pangirayi; Eleblu, John Saviour Yaw; Danquah, Eric Yirenkyi; Kizito, Elizabeth Balyejusa

doi:10.4314/acsj.v26i1.3

Cited by 8 publications

(6 citation statements)

References 18 publications

(35 reference statements)

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“…It was observed that some of the variables had same form (or monomorphic) among accessions across test environments. The monomorphic variables are not useful markers for discriminating among genotypes (Odong et al, 2011;Prohens et al, 2013;Sseremba et al, 2017;Sseremba et al, 2018a). The variables namely plant growth habit, spines on stem, stem pubescence, leaf blade color, leaf prickles, fruit curvature, fruit shape, fruit color distribution at commercial ripeness, and varietal mixture condition, cannot be used as descriptors for purposes of identifying distinctiveness among the study accessions.…”

Section: Discussionmentioning

confidence: 99%

Stability for descriptors of Solanum aethiopicum Shum group (family Solanaceae)

Kabod¹,

Sseremba²,

Buteme³

et al. 2018

J. Plant Breed. Crop Sci.

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Solanum aethiopicum Shum group is a nutrient-rich and income-generating crop enterprise in various sub-Saharan Africa countries. Despite its importance, the development of its improved varieties has not been prioritized. Until now, no field-based descriptor development reference for the crop is available for testing candidate varieties for distinctiveness, uniformity and stability. The purpose of this study is to identify morphological variables that provide identity of S. aethiopicum Shum group accessions across environments. With ten accessions across three test locations, it was observed that the highly polymorphic morphological variables were majorly vegetative and a few reproductive ones. They include plant height at flowering, plant canopy breadth, plant branching, petiole color, petiole length, leaf blade length, leaf blade width, leaf lobbing, leaf tip angle, flowering time, style length, fruit position, fruit flesh density, fruits per inflorescence and fruit flavor. A static stability analysis, a common selection technique for obtaining consistence in performance of genotypes, showed that accessions varied in their interaction with environments for different descriptors. The most statically stable accessions were 184P and 163P while the least stables were 168P, 148, 141, and 137. The findings indicate the potential for identifying unique and stable varieties of S. aethiopicum Shum group for the processing of official release to farmers.

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Section: Discussionmentioning

confidence: 99%

Stability for descriptors of Solanum aethiopicum Shum group (family Solanaceae)

Kabod¹,

Sseremba²,

Buteme³

et al. 2018

J. Plant Breed. Crop Sci.

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“…In Uganda, the Shum group is locally known as 'Nakati' where it earns livelihood to over 4,000,000 people in urban and peri-urban areas. In this study, we focused on the Shum group (leafy type) which is culturally, nutritionally, and economically integrated with several communities in Uganda; and the crop has in previous studies been referred to as African eggplant Shum, Solanum aethiopicum Shum, S. aethiopicum Shum or simply Shum by Sseremba et al [5][6][7][8] who suggested this naming based on works of Adeniji et al [2,3]. To emphasize, the Shum group being a leafy vegetable, is cultivated for its leaves which are used as a necessary accompaniment to staple foods in Africa contributing a rarely appreciated food and nutrition security especially for vulnerable populations [9,10].…”

Section: Introductionmentioning

confidence: 99%

Farmer preferred traits and genotype choices in Solanum aethiopicum L., Shum group

Nakyewa

Sseremba

Kabod

et al. 2021

J Ethnobiology Ethnomedicine

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Background Solanum aethiopicum L. is a nutrient dense African indigenous vegetable. However, advancement of its improved varieties that can increase productivity, household income, and food security has not been prioritized. Further still, studies on some of the crops that have been worked have indicated that it is not a guarantee that the improved varieties will be accepted by the end users and therefore there is need to identify and profile what genotypes are of interest to farmers and their preferred traits through inclusive participatory evaluations. Methodology Farmer participatory evaluations were conducted to profile farmers’ traits of interest and preferred genotypes. A total of 24 genotypes were established in three replications in 6 farms in 3 districts; Wakiso, Mukono, and Luwero as these are the major producing districts of the vegetable in Uganda. A total of 177 sex-disaggregated farmers were engaged in scoring the genotypes for pest, disease and drought tolerance, general appeal, leaf yield, leaf texture, and seed yield for best 10 genotypes under each variable. Results Non-significant differences in trait (p > 0.05) and genotype preferences (p > 0.05) were obtained between men and women. The most desired farmer traits were seed and leaf yield, followed by pest and disease resistance. The overall preferred genotype in terms of disease and pest resistance, leaf yield, leaf texture, and seed yield were E12 followed by E11. Conclusion Gender does not seem to influence farmer choices for the S. aethiopicum, Shum group, indicating an opportunity for single variety prototype advancement by breeders and dissemination by seed companies.

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“…The Solanum aethiopicum complex has four morphological groups, which include; shum, gilo, kumba and aculeatum, all cultivated for consumption of a particular part or for ornamental purposes in the case of aculeatum ( Dinssa et al., 2016 ). The Shum and Gilo group are nutrient rich leafy and fruit vegetables commonly grown in Uganda and parts of Sub-Saharan Africa ( Sseremba et al., 2018 ). In Central Uganda, Shum is proving to be a more important cash crop than coffee, which is the most important export crop for Uganda ( Ssekabembe and Odong, 2008 ).…”

Section: Introductionmentioning

confidence: 99%

Intraspecific crossability and compatibility within Solanum aethiopicum

Buteme

Nakajiri

Kucel

et al. 2021

Heliyon

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Understanding hybridization barriers is relevant for germplasm conservation and utilization. The prezygotic barriers to hybridization include floral morphological differences like pistil and stamen length, pollen characteristics and pollen-pistil interactions. This study sought to elucidate the reproductive biology of Solanum aethiopicum; its mating systems and compatibility barriers. Eight genotypes of Solanum aethiopicum were examined for differences in floral morphology, phenology and cross compatibility in a full diallel mating design, with assessment of fruit set, seed set and seed viability. In-vivo pollen tube growth was observed for failed crosses at 24, 48 and 72 h after pollination. All genotypes had heterostyly flowers, with predominantly small white petals. Incompatibility was observed in five out of 39 combinations. All selfed genotypes displayed compatibility implying the genotypes are self-compatible. Pollen-pistil incompatibility, which was exhibited in four out of the five failed cross combinations, occurred on the stigma, upper style and lower style, a phenomenon typical in Solanaceae. Solanum aethiopicum is self-compatible and majorly self-pollinating but has features that support cross-pollination.

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Linear discriminant analysis of structure within African eggplant ‘Shum’

Cited by 8 publications

References 18 publications

Stability for descriptors of Solanum aethiopicum Shum group (family Solanaceae)

Stability for descriptors of Solanum aethiopicum Shum group (family Solanaceae)

Farmer preferred traits and genotype choices in Solanum aethiopicum L., Shum group

Intraspecific crossability and compatibility within Solanum aethiopicum

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