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30 results for “Cepa”
Figure 1 in Integrative analysis in toxicological assessment of the insecticide Malathion in Allium cepa L. system
Figure 1. Rates of alterations found for Allium cepa cells exposed for 48h to distilled water (H O – negative control), 0.5 mg mL-1, 2 d 1.0 mg mL-1 of Malathion and methyl methanesulfonate (MMS – positive control), concerning: (A) anaphase bridge; (B) chromosome loss; (C) chromosome delay; (D) micronuclei index. KW-H = results of Kruskal-Wallis test and p = value of the statistical probability. Letters on the error bars indicate the result of the statistical Mann-Whitney U test.
Figure 3 in Integrative analysis in toxicological assessment of the insecticide Malathion in Allium cepa L. system
Figure 3. Discriminant canonical function, showing the distribution of the centroids e of the groups of the different treatments; 1: treatment submitted to distilled water; 4: positive control with MMS; 2 and 3: groups exposed to Malathion, for 0.5 e 1.0 mg mL-1 concentrations, respectively.
Figure 2 in Integrative analysis in toxicological assessment of the insecticide Malathion in Allium cepa L. system
Figure 2. Mitotic index at the radicular meristematic region of Allium cepa cells, after exposure for 48 hours to distilled water (H Od – negative control), 0.5 mg mL-1, 1.0 mg mL-1 of Malathion 2 and methyl methanesulfonate (MMS – positive control). KW-H = results of Kruskal-Wallis test and p = value of the statistical probability. Letters on the error bars indicate the result of the statistical Mann-Whitney U test.
Figs 2A-F in Antiproliferative and genotoxic potential from extracts and fractions of Richardia brasiliensis Gomes (Rubiaceae) by the Allium cepa L. test system
Figs 2A-F. Meristem cells of Allium cepa root strain submitted to treatments with extracts and fractions of Richardia brasiliensis. A. Cell binucleada; B. cell with micronucleus (long black arrow); C. Disorganized prophase (short black arrow); D. Break chromosome (short arrow unfilled) in metaphase; E. Anaphase bridge; F. Break chromosome in telophase. Bars = 10 µm.
Allium cepa L. (BR0000011218975)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Allium cepa L. (BR0000011219361)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Allium cepa L. (BR0000011219903)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Figure 2 in First report of Spodoptera frugiperda (Lepidoptera: Noctuidae) on Onion (Allium cepa L.) in South Kivu, Eastern DR Congo
Figure 2 Mean (±S.E) incidence of Spodoptera frugiperda in onion as a function of season and cropping system. 24 plots were considered in each cropping system. A and B represents the incidence in 2019 and 2020 respectively.
Figure 1 in First report of Spodoptera frugiperda (Lepidoptera: Noctuidae) on Onion (Allium cepa L.) in South Kivu, Eastern DR Congo
Figure 1 Spodoptera frugiperda larvae occurring in the onion crop at the experimental site. A: lesions induced on onion leaf epidermis; B: sixth instar larvae found inside onion leaves; C: severity of damage and faecal pellets in whorl of the onion plant; D: fifth instar larva found on the onion plant.
Figure 4 in First report of Spodoptera frugiperda (Lepidoptera: Noctuidae) on Onion (Allium cepa L.) in South Kivu, Eastern DR Congo
Figure 4 Rates of attack severity of Spodoptera frugiperda according the kind of onion crops. A and B: severity in 2019 and in 2020 respectively. 0: no visible leaf damage; 1: small lesions on leaf epidermis; 2: Small elongated (rectangular shaped) lesions (5) of up to 1.3 cm in length on leaf epidermis; 3: Several small to mid-sized 1.3 to 2.5 cm in length elongated lesions (5-10) on several leaves; 4: Several large elongated lesions (˃10), greater than 2.5 cm in length present on several leaves; 5: leaves almost completely destroyed.
Fig 1 in Occurrence of green semilooper Chrysodeixis acuta Walker (Lepidoptera: Noctuidae) in onion (Allium cepa L.) (Amaryllidaceae)
Fig 1. Damage of onion plant due to Chrysodeixis acuta feeding and life stages. (A) Onion plant showing leaf scrapping symptom; (B) bore holes on the leaf due to Chrysodeixis acuta feeding; (C) onion plant defoliated by Chrysodeixis acuta; (D) life stages of Chrysodeixis acuta; (D) caterpillar; (E) silken pupa; (F) adult moth.
Fig 2 in Occurrence of green semilooper Chrysodeixis acuta Walker (Lepidoptera: Noctuidae) in onion (Allium cepa L.) (Amaryllidaceae)
Fig 2. Green-looper population (Mean ± SE) and damage (Mean ± SE) in onion at weekly intervals in kharif onion (2017–2018).
DESDE LA BIOLOGÍA DEL PATÓGENO HASTA LA APLICACIÓN DE BIOCONTROL EN CAMPO: EL CASO DE LA CEPA DE BACILLUS IBUN 2755
<p>Burkholderia glumae es una bacteria fitopatógena agente causal del añublo bacterial<br> de la panícula del arroz la cual está presente en todos los países productores a nivel mundial. Las<br> condiciones del cambio climático han favorecido la severidad de la enfermedad mostrando<br> pérdidas superiores al 50% en el rendimiento de cultivo. En el año 2014 se inició la búsqueda de<br> cepas biocontroladoras como estrategia para mitigar este problema fitosanitario que hasta ahora<br> no tiene control. Se evaluaron 74 cepas de Bacillus rizosféricas provenientes de diferentes<br> plantas, encontrando que 26 de estas tenían actividad en ensayo de antagonismo dual in vitro. Sin<br> embargo, para evaluar su actividad en plantas se debió investigar sobre el patosistema que<br> estaba poco caracterizado, en este sentido, a través de inoculaciones artificiales con B. glumae y<br> el seguimiento de su población y sintomatología, se logró encontrar que la semilla y el sustrato de<br> crecimiento son fuentes de inóculo del patógeno, este ocasiona síntomas de pudrición en<br> plántulas inicialmente, sin embargo, posteriormente permanece endófito durante todo el ciclo de<br> cultivo sin mostrar ninguna sintomatología, pero hacia la floración aumenta su población, de tal<br> forma que causa vaneamiento del grano superior al 50% y con ello pérdidas del cultivo. Con estos<br> resultados las cepas de Bacillus fueron evaluadas bacterizando semillas de arroz que tenían B.<br> glumae colocada artificialmente o semillas libres del patógeno en sustrato de crecimiento<br> infestado. Así 12 cepas de Bacillus mostraron disminución de la severidad en estado plántula<br> donde cinco fueron contundentes en tres concentraciones evaluadas (10 E+06, 10 E+07 y 10<br> E+08 células/mL), además de contrarrestar los efectos deletéreos sobre parámetros de<br> crecimiento. Estas fueron evaluadas bajo condiciones de invernadero usando el sistema de<br> infección del patógeno en la semilla, donde la cepa de Bacillus IBUN 2755 mostró reducir<br> notablemente la población de B. glumae en el tejido vegetal y contrarrestar los daños causados<br> por el patógeno, obteniendo un crecimiento de las plantas similar a un control libre del patógeno.<br> La cepa 2755 fue evaluada en campo bajo condiciones de infestación natural y se usó por<br> bacterización en la semilla y sumergiendo plántulas en el inóculo antes del trasplante. Con esta<br> aplicación se lograron disminuciones de la severidad y la incidencia de la enfermedad, además de<br> presentar un aumento en producción de grano de dos toneladas por hectárea en relación a un<br> control no tratado con el biocontrolador, en este mismo ensayo, se encontró que el residuo de la<br> cosecha tratado con la cepa 2755 mostró una disminución de la población de B. glumae. De<br> acuerdo con estos resultados se concluye que la cepa nativa de Bacillus IBUN 2755 es promisoria<br> y efectiva en el control del añublo bacteriano de la panícula bajo condiciones de infestación natural<br> en campo en el cultivo del arroz.</p>
Onion (Allium cepa) pseudoreference genome
<p>Onion (<i>Allium cepa</i>) is not highly tractable for development of molecular markers due to its large (16 gigbases per 1C) nuclear genome. Single nucleotide polymorphisms (SNPs) are useful for genetic characterization and marker-aided selection of onion because of codominance and common occurrence in elite germplasm. We completed genotyping by sequencing (GBS) to identify SNPs in onion using 46 F2 plants, parents of the F2 plants (Ailsa Craig 43 and Brigham Yellow Globe 15-23), two doubled haploid (DH) lines (DH2107 and DH2110), and plants from 94 accessions in the USDA National Plant Germplasm System (NPGS). SNPs were called using the TASSEL 3.0 Universal Network Enabled Analysis (UNEAK) bioinformatics pipeline. Sequences from the F2 and DH plants were used to construct a pseudo-reference genome against which genotypes from all accessions were scored. Quality filters were used to identify a set of 284 high quality SNPs which were placed onto an existing genetic map for the F2 family. Accessions showed a moderate level of diversity (mean <i>H<sub>e</sub> </i>= 0.341) and evidence of inbreeding (mean <i>F</i> = 0.592). GBS is promising for SNP discovery in onion, although lack of a reference genome required extensive custom scripts for bioinformatics analyses to identify high quality markers.</p>
Effect of Intake of Allium Cepa L. Peel Heated Water Extract on Immunity Enhancement
ClinicalTrials.gov study NCT05666752. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Effect of Allium Cepa in the Management of Shoulder Pain Post Stroke
ClinicalTrials.gov study NCT03468049. IPD Sharing: UNDECIDED. Countries: 1. Publications: 7.
Onion (Allium cepa) pseudoreference genome
Open the record for dataset details and reuse information.
Vitalidad y biomasa subterránea en cepas de montes bajos de encina (Stools vigour and belowground biomass within holm oak coppices)
<p>Supplementary tables containing the dataset for the manuscript "Vitalidad y biomasa subterránea en cepas de montes bajos de encina" ("Stools vigour and belowground biomass within holm oak coppices")</p> <p>Cutting and extraction of both below and above-ground biomass of 26 pairs of holm oak stools (<em>Quercus ilex L. </em>subps<em> ballota</em>) within the centre of the Iberian Peninsula (Guadalajara province). Biomass dry weight measurements by size fractions. Leaves morphology characterization. Stools structure and physiological state assessment.</p>
Figs. 1A-D in Antiproliferative and genotoxic potential from extracts and fractions of Richardia brasiliensis Gomes (Rubiaceae) by the Allium cepa L. test system
Figs. 1A-D. Meristem cells of Allium cepa root strain submitted to treatments with extracts and fractions of Richardia brasiliensis. A. Normal cells in interphase and prophase (long black arrow); B. Normal cell in metaphase (short black arrow) and telophase (short black arrow with filling); C. Normal cell in metaphase; D. Normal cell in anaphase (long arrow unfilled). Bars = 10 µm.
Allium cepa L. (BR0000011219637)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
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