Variación genética en el complejo infraespecífico de chayote evaluada mediante sistemas isoenzimáticos

Arrazate, Carlos Hugo Avendaño; Cadena-Íñiguez, Jorge; Arévalo-Galarza, María Lourdes; Cisneros-Solano, Víctor Manuel; Aguirre-Medina, Juan Francisco; Moreno-Pérez, Esaú del Carmen; Cortés-Cruz, Moisés; Castillo-Martínez, C.R.; Ramírez-Vallejo, Porfirio

doi:10.1590/s0100-204x2012000200013

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…Four primers were found to have 100% polymorphism as compared to studies conducted by Hu et al (2010) using DAMD markers for cucumber collections. Avendano-Arrazate et al (2012) reported high degree of polymorphism in Mexican accessions of S. edule but such studies was limited to the use of isozyme systems. The high level of percentage polymorphism obtained indicates that DAMD primers can be used for S. edule species to screen its diversity.…”

Section: Discussionmentioning

confidence: 99%

A comparative assessment of morphological and molecular diversity among Sechium edule (Jacq.) Sw. accessions in India

et al. 2017

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Genetic variation of 36 Sechium edule accessions collected across 12 states in India was assessed using morphological traits and DAMD markers. Eighteen fruit morphological traits (both qualitative and quantitative) were evaluated to confirm the variations in the present collection. Quantitative traits showed major variations with respect to fruit weight (7.85-498.33 g/fruit), fruit length (5.8-15 cm/fruit), fruit diameter (6-28 cm/fruit) and length of the spine (0-5 cm). Qualitative traits were also diverse in fruit colour, shape, spine density, reticulation, flexibility of spine and furrow depth. The first six principle components showed 82.88% variation in the principal component analysis. The principal component analysis revealed that fruit weight, fruit width, fruit diameter, fruit shape, length of spine, spine density and furrow depth had a significant contribution to the total variation. The DNA analysis performed using DAMD primers were used for deducing the diversity at DNA level. The collection produced 102 bands out of which 97 were polymorphic and the percentage polymorphism ranged between 66.66 and 100 per primer. Discrete pattern of clustering was obtained using UPGMA method of complete linkage percent disagreement revealing high diversity among the collected accessions. Thus, the present study indicates that molecular and morphological marker map would improve our knowledge of S.edule and would facilitate efforts to breed improved S. edule cultivars.

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Section: Discussionmentioning

confidence: 99%

A comparative assessment of morphological and molecular diversity among Sechium edule (Jacq.) Sw. accessions in India

et al. 2017

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“…El chayote posee importantes propiedades nutracéuticas, antimicrobianas y medicinales (Ordoñez et al, 2003;Ordoñez et al, 2006;Salazar-Aguilar et al, 2017;Sulaiman et al, 2013). En México existen diversos grupos varietales que presentan diversidad fenotípica y molecular (Abdelnour & Rocha, 2008;Avendaño-Arrazate et al, 2012;Machida-Hirano et al, 2015); lo que representa una rica fuente de recursos genéticos que necesita ser caracterizada para conocer las potencialidades de cada grupo varietal. Durante la vida de anaquel de los frutos se pueden presentar diversos fenómenos que afectan su calidad, ocasionando su rechazo y pérdidas económicas para los productores.…”

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Comportamiento postcosecha de Sechium edule y expresión de ACS4, ETR1 y MAPK4 en frutos de diferentes etapas de desarrollo

et al. 2019

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México posee una alta diversidad fenotípica del chayote (Sechium edule), el cual se agrupa en aproximadamente 11 grupos varietales, de los cuales, el chayote Verde liso, Cambray y Negro Xalapa, son los que en mayor nivel se comercializan en el centro de Veracruz. Es importante identificar los grupos varietales con características sobresalientes durante la postcosecha, y analizar la expresión de genes durante el desarrollo de los frutos. Se determinó la pérdida de peso fresco, germinación y porcentaje de frutos enfermos en los tres grupos varietales, durante la postcosecha. En chayote Verde liso, se evaluó la expresión de los genes ACS1, ACS4, ETR1 y MAPK4, en frutos de distintas edades. No hubo diferencias significativas en la pérdida de peso fresco entre los tres grupos varietales, el Negro Xalapa fue el que germinó con mayor velocidad, y el Verde liso presentó mayor porcentaje de frutos enfermos. La MAPK4 y ETR1 se expresaron en bajo nivel en todos los frutos analizados; sin embargo, la MAPK4 se expresó más en los frutos de menor edad, y ETR1, se expresó más en frutos de una y 2.5 semanas postantesis, y menos en frutos de 1.5 y 4 semanas postantesis; la ACS1 no se expresó en los frutos analizados, y la ACS4 se expresó solamente en frutos enfermos.

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Prediction of the effects of climate change on Sechium edule (Jacq.) Swartz varietal groups in Mexico

González-Santos

Cadena-Íñiguez²,

Flores

et al. 2016

Genet Resour Crop Evol

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Climate change has significant impacts on biodiversity and, particularly, on agriculture. In this study, the impact of climate change on five varietal groups of Sechium edule, up to the year 2050, was determined through the application of the HadGEM2-CC model based on bioclimate layers. The varietal groups, nigrum minor, albus dulcis and nigrum xalapensis, will lose more than 50 % of their potential current distribution due to a high impact in both the rcp 45 and the rcp 85 scenarios. These two varietal groups also have a limited distribution, which makes them highly susceptible. In the case of nigrum spinosum, a loss under 50 % is predicted with scenario rcp 45. The varietal group that increases its distribution in 11 % is virens levis. The model forecasts significant impacts up to the year 2050; however, the groups evaluated present high genetic diversity and phenotypic plasticity which allow adapting to new conditions that may contribute to mitigating the effects of climate change.

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Variación genética en el complejo infraespecífico de chayote evaluada mediante sistemas isoenzimáticos

Cited by 6 publications

References 14 publications

A comparative assessment of morphological and molecular diversity among Sechium edule (Jacq.) Sw. accessions in India

A comparative assessment of morphological and molecular diversity among Sechium edule (Jacq.) Sw. accessions in India

Comportamiento postcosecha de Sechium edule y expresión de ACS4, ETR1 y MAPK4 en frutos de diferentes etapas de desarrollo

Prediction of the effects of climate change on Sechium edule (Jacq.) Swartz varietal groups in Mexico

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