Genotypic variability in sesame mutant lines in Kenya

Ongin’jo, E.; Ayiecho, PO

doi:10.4314/acsj.v17i2.54203

Cited by 10 publications

(11 citation statements)

References 2 publications

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“…Similar result was found by Daniya et al [22]. In the contrary, [23] found in significant positive correlation of oil content with seed yield and suggested that selection for oil content had no any effect on seed yield.…”

Section: Correlation Coefficientsupporting

confidence: 88%

Untitled

2018

J Plant Sci Curr Res

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The present study was aimed to gather information on genetic association of traits with respect to seed yield and its components. The genotypes were planted in 9 × 9 simple lattice designs at Melkassa Agricultural Research Center, Ethiopia, during the 2014 cropping season to determine the nature and extent of phenotypic and genotypic correlation and path coefficient analysis among 13 quantitative traits. Analysis of variance revealed significant difference among genotypes for all traits studied. Mean performance of genotypes revealed that the highest mean seed yield/plant (8.6g) recorded for Oromia-22 and the lowest mean seed yield/plant (2.6g) for Oromia-9; with overall mean of 5.33g/plant. Whereas, the highest mean oil content (52.15%) noted for Oromia-13 and the lowest (43.35%) mean oil content was recorded for Am-SW-7 genotypes; with overall mean of 47.1%. Traits viz., number of capsules, biomass yield, harvest index and 1000 seed weight showed highly significant and high positive correlation with seed yield, indicating that these traits are reliable yield components and seed yield can be improved through direct selection of them. Moreover, plant height and number of seeds/capsule showed highly significant but moderately positive correlation with seed yield; hence, these trait scan also be considered alternatively for yield improvement in sesame. Maximum positive direct effect on seed yield was exerted by number of capsules, biomass yield, and days to maturity and harvest index, suggesting that these traits can be used for selection to improve the primary trait. Over all, the use of the above mentioned traits in sesame improvement program (of the mid-altitude areas of Ethiopia) would increase seed yield.

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Section: Correlation Coefficientsupporting

confidence: 88%

Untitled

2018

J Plant Sci Curr Res

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“…Using breeding and selection approaches, over 38,000 genetic lines have been developed (United States Department of Agriculture, 2010). Cultivars are distinguished by capsule numbers per node; locule numbers within a capsule; stem branching patterns; seed shapes and colors; flower colors; leaf margin shapes; plant height; trichomes on the fruit, stem, and leaf; fruit maturation; and more [62] , [63] , [64] ; however, many cultivars are difficult to distinguish using these morphological characters. If the cp SSR information is compiled, these SSR loci can provide useful identification tools for some of these cultivars.…”

Section: Discussionmentioning

confidence: 99%

Complete Chloroplast Genome Sequences of Important Oilseed Crop Sesamum indicum L

Kim

2012

PLoS ONE

136

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Sesamum indicum is an important crop plant species for yielding oil. The complete chloroplast (cp) genome of S. indicum (GenBank acc no. JN637766) is 153,324 bp in length, and has a pair of inverted repeat (IR) regions consisting of 25,141 bp each. The lengths of the large single copy (LSC) and the small single copy (SSC) regions are 85,170 bp and 17,872 bp, respectively. Comparative cp DNA sequence analyses of S. indicum with other cp genomes reveal that the genome structure, gene order, gene and intron contents, AT contents, codon usage, and transcription units are similar to the typical angiosperm cp genomes. Nucleotide diversity of the IR region between Sesamum and three other cp genomes is much lower than that of the LSC and SSC regions in both the coding region and noncoding region. As a summary, the regional constraints strongly affect the sequence evolution of the cp genomes, while the functional constraints weakly affect the sequence evolution of cp genomes. Five short inversions associated with short palindromic sequences that form step-loop structures were observed in the chloroplast genome of S. indicum. Twenty-eight different simple sequence repeat loci have been detected in the chloroplast genome of S. indicum. Almost all of the SSR loci were composed of A or T, so this may also contribute to the A-T richness of the cp genome of S. indicum. Seven large repeated loci in the chloroplast genome of S. indicum were also identified and these loci are useful to developing S. indicum-specific cp genome vectors. The complete cp DNA sequences of S. indicum reported in this paper are prerequisite to modifying this important oilseed crop by cp genetic engineering techniques.

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“…Saturated fatty acids present are palmitic and stearic acids making about 13%. The unsaturated fatty acids being the main constituents in sesame oil have also been extensively reported by many co-workers [7][8][9][10]37,38 3.2. Reaction Mechanism for Trans-esterification and Synthesis of the SEFAMESO Surfactant.…”

Section: Resultsmentioning

confidence: 90%

Synthesis, Characterization, and Evaluation of Solution Properties of Sesame Fatty Methyl Ester Sulfonate Surfactant

Kipkemboi

Rop

2020

ACS Omega

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The search for alternative, biodegradable, and sustainable raw materials to replace finite petrochemicals is an area of great interest. Triglycerides obtained from oilseed crops are such potential raw materials. In this study, sesame oil was trans-esterified to sesame fatty methyl esters (SEFAMEs) that were used as precursors in the synthesis of sesame fatty methyl esters sulfonate (SEFAMESO) surfactant. SEFAME and SEFAMESO surfactants were characterized by high-performance liquid chromatography–mass spectrometry (HPLC-MS), 1H NMR, and Fourier transform infrared (FTIR) spectra. HPLC-MS, 1H NMR, and FTIR spectra indicated successful trans-esterification and conversion of SEFAMEs to SEFAMESO. Solution properties of the SEFAMESO surfactant including hydrophilic–lipophilic balance (HLB) value, Krafft point, foam-ability, critical micelle concentration (CMC), counterion degree of binding and thermodynamic parameters such as ΔG°mic, ΔH°mic, ΔS°mic, ΔH°mic,* and T C were evaluated. The CMC values of SEFAMESO at 298.15 K were relatively lower than that of the sodium dodecyl sulfate (SDS) standard, and these values decreased to a minimum at 303.15 K and then increased with an increase in temperature. ΔG°mic values were negative indicating a spontaneous micellization process. ΔH°mic and ΔS°mic values revealed that micellization was entropy-driven at low temperatures and both entropy- and enthalpy-driven at high temperatures. ΔH°mic,* values were negative suggesting formation of stable micelles. The evaluated properties revealed the potential application of the synthesized surfactant as a cleansing agent.

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Genotypic variability in sesame mutant lines in Kenya

Cited by 10 publications

References 2 publications

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Complete Chloroplast Genome Sequences of Important Oilseed Crop Sesamum indicum L

Synthesis, Characterization, and Evaluation of Solution Properties of Sesame Fatty Methyl Ester Sulfonate Surfactant

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