Genetic characterization and diversity among avocado (Persea americana Mill.) genotypes from INIA-CENIAP, Venezuela

Pereira, H. Ferrer; Pérez-Almeida, Iris; Urrutia, Miguel

doi:10.1007/s11295-017-1128-x

Cited by 6 publications

(5 citation statements)

References 15 publications

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“…En los estudios epidérmicos se siguió el protocolo estandarizado por Ferrer Pereira et al (2011), utilizando fragmentos de al menos 1 cm 2 , tomados de la zona media de la hoja y aclarados por inmersión en ácido nítrico al 15% durante 20 a 40 min bajo calor constante en una plancha eléctrica. Las epidermis adaxial y abaxial se separaron cuidadosamente, removiéndose los restos adheridos de mesofilo con un pincel fino.…”

Section: Preparaciones Anatómicasunclassified

ANÁLISIS MORFOANATOMÍCO FOLIAR EN GRUPOS HORTÍCOLAS DE AGUACATE (Persea americana) DEPOSITADOS EN LA COLECCIÓN DEL INIA-CENIAP, VENEZUELA

Ferrer Pereira,

Raymúndez,

Pérez-Almeida

2017

Trop Subtrop Agroecosyst

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The avocado (Persea americana Mill.) is the most important species of Lauraceae in America due to its exploitation as food for pre-Columbian and modern cultures. It is a very important seasonal crop in Venezuela based on a perennial fruit tree management. From a selection of 76 accessions (45 cultivars) of avocados cultivated at the Germplasm Bank of INIA-CENIAP, a morphoanatomical analysis was performed to identify attributes of taxonomic resolution (diagnostic characters) which allow to characterize sets and / or culta. Morphological study was carried out from each accession herborized sample. Information was obtained by freehand transverse leaf sections (epidermis, mesophyll and midvein) as well as paradermic preparations, and observed data was recorded in DELTA System. New morphoanatomical characters and discriminating attributes between cultivars were identified and described, especially to discriminate the Mexican group, and a close relationship within West Indian and Guatemalan cultivars was observed due to the variability identified from the latter group. Indument- related attributes were highly informative to discriminate among cultivars, along with the outline, apical angle and projections at the base of the leaf blades, stem cross section and presence of anise odor, progress and joining of the secondary nerve branches, tertiary venation pattern, abaxial contour and thickness of the sclerenchymatous sheath and compaction of the phloem in the vascular bundle, adaxial contour of the median nerve, and thickness, outline and uniformity of the anticlinal walls of adaxial and abaxial epidermal cells.

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Section: Preparaciones Anatómicasunclassified

ANÁLISIS MORFOANATOMÍCO FOLIAR EN GRUPOS HORTÍCOLAS DE AGUACATE (Persea americana) DEPOSITADOS EN LA COLECCIÓN DEL INIA-CENIAP, VENEZUELA

Ferrer Pereira,

Raymúndez,

Pérez-Almeida

2017

Trop Subtrop Agroecosyst

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“…guatemalensis y P. americana var. americana (Guzmán et al, 2017;Ferrer-Pereira et al, 2017). El aguacate criollo mexicano pertenece a la variedad drymifolia o raza mexicana (Ayala & Ledezma, 2014).…”

Section: Introductionunclassified

“…Además, variedades comerciales se han generado a partir de cruzas entre las razas, como el aguacate "Hass", el cual es un híbrido con predominio guatemalensis y rasgos de drymifolia (Tremocoldi et al, 2018) mientras, el aguacate fuerte es un híbrido de las variedades drymifolia x guatemalensis (Crane et al, 2013). El aguacate tiene gran importancia comercial debido al consumo del fruto como alimento a nivel mundial (Peraza-Magallanes et al, 2017;Ferrer-Pereira et al, 2017).…”

Section: Introductionunclassified

“…In addition, commercial varieties have been developed from crosses between landraces, such as the "Hass" avocado, which is a hybrid with predominantly guatemalensis and drymifolia features (Tremocoldi et al, 2018) while, "Fuerte" avocado is a hybrid of the drymifolia x guatemalensis varieties (Crane et al, 2013). Avocado is of great commercial importance due to the consumption of the fruit as food worldwide (Peraza-Magallanes et al, 2017;Ferrer-Pereira et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Rodríguez

Cortés-Cruz

Rodríguez-Carpena³

et al. 2019

rbio

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“…Moreover, several avocado germplasm banks have characterized their accessions at the genetic level to identify the ancestry of the conserved genotypes. They are the Venezuelan gene bank -INIA-CENIAP (Ferrer-Pereira et al 2017), the National Gene Bank repository (SHRS ARS USDA) in Miami (Boza et al 2018), and the Spanish Gene Bank (CAÑAS-GUTIÉRREZ et al, 2019).…”

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confidence: 99%

Pleistocene dispersion supports a unique native diversity in the Colombian avocado germplasm

Berdugo-Cely

Cortés

López-Hernández

et al. 2023

Preprint

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Genomic characterization of ex-situ collections optimizes the utilization of genetic resources, identifies redundancies among accessions, captures cryptic variation, establishes reference collections, and ultimately assists pre-breeding and breeding efforts. However, the integration of population genomic analyses is often lacking when studying the biodiversity of crop gene pools. Here, we present modern classification and machine learning approaches to characterize and harness the genebank of an agrobiodiversity hotspot on Persea americana Mill., an iconic American fruit tree crop that has seen an unprecedented expansion worldwide. We selected 144 accessions from the Colombian National genebank and 240 materials from local plantations in the Colombian Northwest Andes. We genotyped them using a strategy based on reduced representation sequencing. We included available sequences of genotypes from known avocado races, Mexican, Guatemalan, and West Indian, to discover SNPs, analyze the population structure and identify possible new genetic groups in Colombian germplasm. We detected a population structure suggestive of a new fourth race in Colombia, with a possible genetic substructure related to geographical origin (Andean and Caribbean). Hybrid determination and ABC modeling suggested rampant inter-race geneflow. They supported the hypothesis of the high mobility of native avocado trees from Central America to Northern South America starting in the Pleistocene. Our study supports that Colombia might be a new diversity center for P. americana. Genotypes of the two newly identified Colombian groups can be used as parents in plant breeding strategies to generate cultivars adapted to specific ecogeographical regions of Colombia.

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Genetic characterization and diversity among avocado (Persea americana Mill.) genotypes from INIA-CENIAP, Venezuela

Cited by 6 publications

References 15 publications

ANÁLISIS MORFOANATOMÍCO FOLIAR EN GRUPOS HORTÍCOLAS DE AGUACATE (Persea americana) DEPOSITADOS EN LA COLECCIÓN DEL INIA-CENIAP, VENEZUELA

ANÁLISIS MORFOANATOMÍCO FOLIAR EN GRUPOS HORTÍCOLAS DE AGUACATE (Persea americana) DEPOSITADOS EN LA COLECCIÓN DEL INIA-CENIAP, VENEZUELA

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Pleistocene dispersion supports a unique native diversity in the Colombian avocado germplasm

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