Genetic and cytogenetic structure of wild lemon grass (Elionurus muticus ) populations

Füller, Thanise Nogueira; Guerra, Divanilde; Wittmann, Maria Teresa Schifino; Tessele, Carolina; Barros, Ingrid Bergman Inchausti de; Neto, José Fernandes Barbosa

doi:10.1590/1984-70332015v15n4a45

Cited by 5 publications

(9 citation statements)

References 22 publications

(20 reference statements)

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“…The high meiotic indices found here, indicating the regularity in the meiotic behavior of A. integerrima, corroborate the statement of Füller et al (2015) that high-frequency meiotic irregularities in natural populations are not a common phenomenon. This was also observed in studies with natural populations of Elionurus muticus (Spreng.)…”

Section: Meiotic Index and Pollen Viabilitysupporting

confidence: 90%

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Cytogenetic characterization of Angelonia integerrima Sprengel, a native species with ornamental potential

Tedesco

Emer

Winhelmann

et al. 2019

Crop Breed. Appl. Biotechnol.

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Angelonia integerrima Sprengel is a native species of the state of Mato Grosso do Sul and the Southern region (Paraná, Santa Catarina and Rio Grande do Sul) of Brazil, with features such as an unusual appearance and color of the flowers, indicating an ornamental use. To optimize the use of this species and to fill in gaps regarding its cytogenetic characterization, this study determined the chromosome number, meiotic index and pollen viability of plant individuals of four A. integerrima populations. All plant individuals of the four populations had 2n = 20 chromosomes. Still, the meiotic index of most analyzed plant individuals exceeded 90%, while pollen viability of all plant individuals was higher than 80%. These data suggest considerable cytological stability of the analyzed A. integerrima plant individuals, which may favor the selection of future genotypes for commercial purposes or their use in conservation and breeding programs of the species.

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Section: Meiotic Index and Pollen Viabilitysupporting

confidence: 90%

“…This was also observed in studies with natural populations of Elionurus muticus (Spreng.) Kuntze (Füller et al 2015), Bidens pilosa L. (Fachinetto et al 2008), Baccharis trimera (Less.) DC.…”

Section: Meiotic Index and Pollen Viabilitymentioning

confidence: 99%

Cytogenetic characterization of Angelonia integerrima Sprengel, a native species with ornamental potential

Tedesco

Emer

Winhelmann

et al. 2019

Crop Breed. Appl. Biotechnol.

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“…Recent studies in native species of the state of Rio Grande do Sul show irregularities in meiotic behavior similar to that of crem, but with a predominance of regularity and high pollen viability in lemon grass (Elionurus muticus) (Füller et al 2015), cherry tree accessions (Eugenia involucrata) (Guerra et al 2016), and Paspalum notatum tetraploidized plants (Krycki et al 2016). According to Pagliarini (2000), irregular chromosome segregation is the most common meiotic abnormality in both cultivated and native species, being characterized by the presence of chromosomes in precocious chromosome ascension and laggard choromosome.…”

Section: Krb Tolomeotti Et Almentioning

confidence: 98%

“…Thus, cytogenetics has been widely used to study genetic variability, evolution, phylogeny, origin and taxonomy, as well as to determine strategies in breeding and conservation programs in cultivated and native species (Chen et al 2004, Füller et al 2015. According to Pagliarini and Pozzobon (2004), cytogenetic studies involving chromosome counting, determination of ploidy level, evaluation of meiotic behavior, and pollen viability are essential in the characterization of germplasm collections.…”

Section: Introductionmentioning

confidence: 99%

Cytogenetic characterization of Tropaeolum pentaphyllum Lam

Tolomeotti

Felippi

Donazzolo

2018

Crop Breed. Appl. Biotechnol.

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The species Tropaeolum pentaphyllum Lam. (batata-crem or crem) is of great economic and medicinal importance. For being an endangered species, the knowledge of its genetic variability is necessary. Considering the lack of cytological studies on this species, this work describes the chromosome numbers, the meiotic behavior, the meiotic index, and the viability of the pollen grains of three populations of T. pentaphyllum from Rio Grande do Sul, Brazil. The three populations presented 2n = 28 chromosomes. Meiotic behavior was regular, with low abnormality frequency (<1%), which culminated in IMx> 90% in the three accessions. This meiotic stability resulted in high production of viable pollen grains, which will favor the use of these accessions in selection programs for commercial purposes, conservation and sustainable use.

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“…Además, debido que el éxito de cualquier programa de domesticación y premejoramiento depende de la variabilidad genética de las poblaciones parentales involucradas (Nodari & Guerra, 2000), también resulta imprescindible caracterizar la variabilidad genética de las poblaciones de E. muticus. Sin embargo, la información acerca de la variabilidad genética de esta especie es aún escasa (Füller et al, 2010(Füller et al, , 2015 y no se cuenta con datos de las poblaciones del NEA.…”

Section: Introductionunclassified

Variabilidad genética en poblaciones de Elionurus muticus (Poaceae) de Corrientes, Argentina, a partir de marcadores moleculares de ADN nuclear y cloroplástico.

Moreno¹,

Almirón²,

Peichoto³

et al. 2018

Bol. Soc. Argent. Bot.

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Elionurus muticus constituye un valioso recurso renovable; utilizado como forraje, fijador del suelo, aromatizante de ropa, para ahuyentar polillas, como antiséptica, contra la gonorrea y problemas urinarios, para la bronquitis, para curar la lepra, entre otros usos. Además, por su contenido en citral, se lo ha propuesto como sucedáneo de aceites esenciales, como la citronela. No obstante su potencial, se cuenta con escasos trabajos de caracterización genética de la especie. En este trabajo caracterizamos genéticamente poblaciones de E. muticus de Corrientes (Argentina), empleando marcadores moleculares RAPD y de ADNcp. Los resultados evidencian variabilidad genética en las poblaciones, y serían el resultado de la deriva genética, la historia de reducción poblacional de la especie y los modos de reproducción de la especie. Dado que en trabajos previos en poblaciones de Argentina, se observó variabilidad morfológica y en la capacidad de producir aceites, un análisis conjunto de variabilidad morfológica, genética y química en un mayor número de poblaciones, representativo de toda el área de distribución de la especie, enriquecerá el conocimiento sobre el estado de los recursos genéticos actuales de E. muticus, y contribuirá a la puesta en valor de la especie como recurso natural y como potencial cultivo de uso comercial sostenible.

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Genetic and cytogenetic structure of wild lemon grass (Elionurus muticus ) populations

Abstract: -Elionurus muticus is a native aromatic grass from the Pampa biome that produces an

Cited by 5 publications

References 22 publications

Cytogenetic characterization of Angelonia integerrima Sprengel, a native species with ornamental potential

Cytogenetic characterization of Angelonia integerrima Sprengel, a native species with ornamental potential

Cytogenetic characterization of Tropaeolum pentaphyllum Lam

Variabilidad genética en poblaciones de Elionurus muticus (Poaceae) de Corrientes, Argentina, a partir de marcadores moleculares de ADN nuclear y cloroplástico.

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