Assessment of genetic diversity in Psidium guajava L. using different approaches

Coser, Sara Morra; Ferreira, Márcia Flores da Silva; Ferreira, Adésio; Mitre, Letícia Kuster; Carvalho, Carlos Roberto; Clarindo, Wellington Ronildo

doi:10.1016/j.scienta.2012.09.030

Cited by 40 publications

(40 citation statements)

References 25 publications

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“…Sin embargo, el germoplasma de la región Calvillo-Cañones muestra algunas ventajas como altos contenidos de sólidos solubles totales, la productividad y la adaptación a las condiciones restrictivas de cultivo de la región (PADILLA-RAMÍREZ al., 2002; PADILLA-RAMÍREZ;GONZÁLEZ-GAONA, 2010). Además, los resultados de este estudio coindicen con trabajos previos al establecer que las características del fruto tales como el diámetro polar y ecuatorial, grosor del mesocarpio, peso y forma de fruto, y color del mesocarpio; explican la mayor proporción de la variabilidad fenotípica en guayabo en la región de estudio y podrían sugerirse para futuras caracterizaciones de la diversidad en Psidium o en el proceso de evaluación y selección de germoplasma (ARANGUREN et al, 2010;RODRÍGUEZ et al, 2010a;FERNANDES-SANTOS et al, 2011;COSER et al, 2012;POMMER, 2012;VALDÉS-INFANTE et al, 2012;MEHMOOD et al, 2014;PADILLA-RAMÍREZ et al, 2014). Por el contrario, SÁNCHEZ-URDANETA et al (2008) indican que las características morfológicas que mejor discriminan germoplasma de Psidium son aquellas asociadas con planta: altura de planta, forma del dosel, diámetro del tallo y forma de las hojas, éstas últimas también evaluadas por TAPIA y LEGARIA (2007) o bien, características cualitativas del fruto: forma del fruto, forma de la base del fruto, color del fruto (SÁNCHEZ-URDANETA et al, 2007;MEHMOOD et al, 2014).…”

Section: Discussionunclassified

“…La variabilidad en las características morfológicas de la guayaba se ha reportado en Egipto (EL SISY, 2013); India (BABU et al, 2007); Brasil (FERNANDES-SANTOS et al, 2010COSER et al, 2012); México MARTÍNEZ-DE LARA et al, 2004;HERNÁNDEZ-DELGADO et al, 2007;; Cuba (RODRÍGUEZ et al, 2004;2010b;VALDÉS-INFANTE et al, 2010) y Pakistán (MEHMOOD et al, 2014). Los guayabos Mexicanos presentan mayores contenidos de vitamina C y de sólidos solubles totales, aunque son superados por las guayabas extranjeras en cuanto al tamaño de fruto y el grosor de mesocarpio HERNÁNDEZ-DELGADO et al, 2007;.…”

Section: Introductionunclassified

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Caracterización Morfológica De Germoplasma De Guayabos De México: Implicaciones en Su Conservación Y Mejoramiento Genético

Hernández-Delgado

Padilla-Ramírez

2018

Rev. Bras. Frutic.

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Resumen -El guayabo (Psidium guajava L.) que se cultiva en México muestra variación morfológica y productiva debido a que comúnmente se propaga sexualmente. La caracterización de la diversidad genética permitirá identificar progenitores potenciales para el mejoramiento genético de la especie o para la producción de nuevos materiales clonales. En este trabajo se caracterizaron, con base en 50 descriptores morfológicos, 88 accesiones de guayabo [87 pertenecientes a P. guajava y una a P. friedrichsthalianum (Berg.) Niedz] cultivadas en un banco de germoplasma localizado en Huanusco, Zacatecas, México. El 95% del germoplasma tiene frutos ovoides o redondos, 92% tiene frutos con mesocarpio crema o blanco y 87.5% frutos amarillos. Los frutos con dichas características se denominan regionalmente como 'China' o 'Media China' y son los preferidos para el consumo como fruta fresca o de mesa. Siete características cuantitativas describieron mejor la variabilidad morfológica del germoplasma: dos de árbol (grosor del tallo y longitud de hojas) y cinco del fruto (diámetro polar y ecuatorial; tamaño de sépalo; diámetro de la cavidad del cáliz y contenido de sólidos solubles totales). Tres accesiones (números 68, 52 y 49) sobresalieron por sus valores altos de crecimiento de árbol en campo aunque con frutos pequeños; mientras que otras cinco (números 79, 57, 60, 78 y 56) exhibieron menor crecimiento de árbol pero mayores tamaños de fruto, de sépalos y de la cavidad del cáliz, así como contenido de sólidos solubles totales. Palabras clave: Psidium guajava L., P. friedrichsthalianum (Berg.) Niedz, morphologic diversity, Mexican germplasm. Morphologic characterization of guava germplasm from México: implications about its conservation and breedingAbstract -Guavas (Psidium guajava L.) growing throughout Mexico show broad morphologic and productive variation due the crop is commonly sexual-propagated. The characterization of genetic diversity of Mexican guava germplasm will allow identify potential parents for genetic improvement as well as the production of new clonal cultivars. In this work 88 guava accessions [87 belong to P. guajava and one from P. friedrichsthalianum (Berg.) Niedz] growing in Huanusco, Zacatecas Mexico were characterized on the basis of 50 morphologic descriptors. The 95% of germplasm shows ovoid or round fruit shape; 92% fruits with beige or white mesocarp and 87.5% has yellow fruits. Fruits with these traits are locally named as 'China' or 'Media China' and they are preferred for fresh use. Seven quantitative traits were those that better described the morphologic variability of germplasm: two from trees (stem thickness and leaf length) and five from fruits (polar and equatorial diameter; sepal size; calyx cavity diameter; and total solid soluble content). Three accessions (numbers 68, 52, and 49) outstand due their high values of tree growth under field conditions although showing small fruit sizes while other five accessions (numbers 79, 57, 60, 78, and 56) exhibited small tree sizes but high values for fru...

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Section: Discussionunclassified

Section: Introductionunclassified

Caracterización Morfológica De Germoplasma De Guayabos De México: Implicaciones en Su Conservación Y Mejoramiento Genético

Hernández-Delgado

Padilla-Ramírez

2018

Rev. Bras. Frutic.

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“…In the present study, it was observed that these commercial genotypes (PS and PA, along with C3 and C16) showed greater variation in the first harvest with regards to pollen viability. The genotype C3 was also reported to have molecular similarity to PA and PS (Coser et al, 2012b). The Cortibel genotypes of large fruit demonstrated greater variation in the second (CLG, CBLG and CRG) and third (CLG and CSLG) harvests (Fig.…”

Section: Pollen Viabilitymentioning

confidence: 91%

“…2). Altogether, these genotypes present differential characteristics of fruits and seeds (Coser et al, 2012b(Coser et al, , 2014. The genotype C3 has been described as presenting smaller fruit size, and the cultivars PA and PS as producing large amount of seeds.…”

Section: Pollen Viabilitymentioning

confidence: 99%

“…Some previously characterized Cortibel genotypes present molecular and morphological divergence of fruits in commercial cultivars, including Paluma (PA) and Pedro Sato (PS) (Gomes Filho et al, 2010;Coser et al, 2012b;2014). In the present study, it was observed that these commercial genotypes (PS and PA, along with C3 and C16) showed greater variation in the first harvest with regards to pollen viability.…”

Section: Pollen Viabilitymentioning

confidence: 99%

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Genetic parameters of pollen viability in guava (Psidium guajava L.)

Silva¹,

Silva²,

Marçal³

et al. 2017

Aust J Crop Sci

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Pollen viability is essential for the sexual reproduction in plants. Genetic and environmental factors as well as plant age can influence this characteristic. In this work, pollen viability was studied in guava (Psidium guajava L.), a cross-pollination species. The genetic parameters for this characteristic were estimated considering 22 genotypes, two environments and different plant ages. For that, the pollen viability of the genotypes was evaluated for three years (2013, 2014 and 2015) in two experimental orchards (installed in randomized block design, with three blocks and two plants per plot) and at two different regions of the state of Espírito Santo, Brazil. The plants were analyzed at 19, 24 and 38 months of age in the years 2013 and 2014 in Mimoso do Sul (ES) and 2015 in Linhares (ES), respectively. The flower buds, at pre-anthesis stage, were collected, fixed in ethanol:acetic acid (3:1) and stored at -20°C. Pollen viability was obtained by colorimetric methods (Alexander's, Acetic Orcein and Lugol dyes) and the genetic parameters estimated by means of mixed models. The pollen viability of the genotypes was high, with an overall mean of 93.46% in the thr ee harvests. Mean heritability was lower in the harvests of 2013 (0.479) and 2014 (0.126) in relation to 2015 (0.583), indicating a slighter possibility of predicting genetic gains based on this characteristic. Altogether, these results provide information about pollen viability in commercial and superior genotypes of the guava crop used in this study, given that pollen-donor genotypes are reported to influence characteristics related to weight and fruit quality in this species. In addition, these genotypes showed good potential for cross-pollination, and can therefore be used as pollinators in orchards and crosses within breeding programs.

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Advances in Genetic Diversity Analysis in Fruit Tree Crops

Larrañaga

Hormaza

2016

Progress in Botany 77

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Assessment of genetic diversity in Psidium guajava L. using different approaches

Cited by 40 publications

References 25 publications

Caracterización Morfológica De Germoplasma De Guayabos De México: Implicaciones en Su Conservación Y Mejoramiento Genético

Caracterización Morfológica De Germoplasma De Guayabos De México: Implicaciones en Su Conservación Y Mejoramiento Genético

Genetic parameters of pollen viability in guava (Psidium guajava L.)

Advances in Genetic Diversity Analysis in Fruit Tree Crops

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