Germination characteristics of<i>Gymnocalycium monvillei</i>(Cactaceae) along its entire altitudinal range

Bauk, Karen; Flores, Joel; Ferrero, Cecilia; Pérez-Sánchez, R.; Peñas, M. Laura Las; Gurvich, Diego E.

doi:10.1139/cjb-2016-0154

Cited by 27 publications

(28 citation statements)

References 54 publications

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“…Although there is evidence in another species of cactus (Gymnocalycium monvillei) that the characteristics of the germination differ according to the distribution of the plants at different altitudes, 27 differences in the germination rates of the seeds of Cereus plants Maringá and Picos were not detected in current study nor were they observed in a study by Bevilaqua et al 18 No significant differences were observed, at 25°C and 30°C, in the germination rate of the seeds of the two regions. Over a period of four days, the germination rate of seeds maintained at 30°C was greater than the germination rate of seeds maintained at 25°C.…”

Section: Number Weight and Germination Rate Of Cereus Seeds Grown Incontrasting

confidence: 80%

Characteristics of fruits and seeds of cereus plants (cactaceae) grown in South and Northeastern Brazil

Luz¹,

Neto²,

Mangolin³

et al. 2020

HIJ

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The physical and physiological characteristics of fruits and seeds were analyzed so that parameters may be determined to differentiate cactus plants of the Cereus genus from south and northeastern Brazil. Length, width, bark thickness, pulp diameter, weight of fruits, and sugar content (°Brix) of the fruit pulp, number of seeds (NS), weight of 100 seeds (P 100) and germination taxa (%G) of the seeds from plants of the two regions were evaluated. Fruit length, bark thickness and Brix degree were higher in Cereus plants from Maringá (south) than in plants from Picos (northeast), whilst the P 100 of plants cultivated in Picos was higher than the P 100 of plants grown in Maringá. NS and %G, at 30°C, were not significantly different in the seeds of the plants cultivated in Maringá and Picos. Positive Pearson correlation was reported between NS and the fruits´ weight, length, width, and diameter. Fruit width had a positive correlation with the weight, length, diameter, bark thickness and sugar content. The length, diameter and thickness of the bark were also positively correlated with the fruits´ sugar content. Above evidences suggest that larger fruits present higher Brix degree. The present study was important to shown that the Cereus plants from Maringá may be a source of bigger and sweeter fruits, essential characteristics for breeding programs..

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Section: Number Weight and Germination Rate Of Cereus Seeds Grown Incontrasting

confidence: 80%

Characteristics of fruits and seeds of cereus plants (cactaceae) grown in South and Northeastern Brazil

Luz¹,

Neto²,

Mangolin³

et al. 2020

HIJ

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“…Las características reproductivas de las especies han sido señaladas de gran importancia para comprender la dinámica poblacional, y por ende la abundancia de las mismas (Baskin & Baskin 2001, Godínez-Álvarez et al 2003, Fernández-Pascual et al 2019. Particularmente en la familia Cactaceae se ha analizado como las características de las semillas, el peso, tamaño y forma de las plántulas (Bauk et al 2015), la germinación (Bauk et al 2017) y el crecimiento de las raíces (Martino et al 2018) varían a lo largo de gradientes altitudinales. Sin embargo, ninguno de estos estudios analizó como estas variables se relacionaban a la abundancia de las especies.…”

Section: O N L I N E F I R S Tunclassified

“…Semillas más grandes generan plántulas más grandes que pueden presentar mayores probabilidades de establecimiento (Leishman et al 2000, Balogh & Toft 2007) y mayores porcentajes de germinación podrían suponer un mayor número de plántulas establecidas (Kempel et al 2013). Por otro lado, Bauk et al (2017) encontraron que el porcentaje de germinación se relacionó positivamente con la altitud. En el mismo estudio se analizó también la velocidad de germinación, que es una característica que puede afectar positivamente el establecimiento de las plántulas (Norden et al 2009); sin embargo, el único estudio que analizó la velocidad de germinación en un gradiente altitudinal para una especie de cactus no encontró una relación entre el gradiente altitudinal y esta variable (Bauk et al 2017).…”

Section: O N L I N E F I R S Tunclassified

Asociaciones entre las características reproductivas y la abundancia en Gymnocalycium quehlianum (Cactaceae) a lo largo de un gradiente altitudinal

2021

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Antecedentes: A pesar de que las especies pueden presentar amplios rangos altitudinales, poco se conoce acerca de cómo varía su abundancia y de las variables asociadas a esta variación. Hipótesis: Existirá una asociación entre la abundancia y características reproductivas, como peso de la semilla, la germinación y el tamaño y forma de las plántulas a lo largo de un gradiente altitudinal. Especies de estudio: Gymnocalycium quehlianum Sitio de estudio y fecha: Sierras Chicas, Provincia de Córdoba, Argentina. 2015-2016. Métodos: se midió la densidad y la estructura poblacional en tres sitios de la distribución de G. quehlianum en un gradiente altitudinal, a 615, 948 y 1,257 m snm. Se pesaron las semillas, se determinó el porcentaje y el tiempo medio de germinación (TMG), y se midió la longitud y diámetro de las plántulas. Resultados: El peso de las semillas fue menor en la población de altitud intermedia, mientras que el porcentaje y el TMG no variaron significativamente entre las altitudes. El tamaño de la plántula fue menor en la altitud intermedia, mientras que la forma de las plántulas de las poblaciones extremas presentó una forma más alargada. Conclusiones: No existe una relación entre la abundancia poblacional a lo largo del gradiente altitudinal y las variables analizadas. Algunas variables no presentaron diferencias a lo largo del gradiente, como el porcentaje de germinación y el tiempo medio de germinación; otras variables como el peso de la semilla y la forma y tamaño de las plántulas lo hicieron de manera contraria a lo esperado.

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“…However, no difference in the germination values was observed in the scarified and gibberellic acid-treated seeds of fruits, harvested from high and medium altitudes. The characteristics of germination differed considerably between the altitudinal provenances and appeared to be important in determining the ability of the species to inhabit such a wide gradient (Bauk et al, 2016).…”

Section: Pre-test Overcoming Dormancymentioning

confidence: 99%

The physiological quality of the seeds of passion fruit (Passiflora spp.) grown at different altitudes

Maciel¹,

Lima²,

Madalon³

et al. 2018

Aust J Crop Sci

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Altitudes, ranging between 100 m and 900 m are the most suitable for growing passion fruit and the studies on the distinct geographical locations suggest the expression of different genotypes under the influence of adequate environmental conditions. The objective of this study was to evaluate the physiological quality of the seeds of Passiflora spp., cultivated at three different altitudes in the state of Espírito Santo, Brazil. Before conducting the physiological tests for seed quality, pre-tests were performed on the physically scarified, gibberellic acid-treated, and intact seeds of the yellow passion fruit (Passiflora edulis Sims f. flavicarpa Degener), the purple passion fruit (Passiflora edulis Sims), and the sweet passion fruit (Passiflora alata Curtis), collected from three different altitudes (high, medium, and low), in order to overcome dormancy. The higher values of germination and vigor were observed after the pre-germination treatments of the intact seeds of the yellow passion fruit, the scarified seeds of the purple passion fruit, and the gibberellic acid-treated seeds of the sweet passion fruit. The seeds with the highest values of germination and vigor were selected for the accelerated aging test with a saturated salt solution at 43 ºC for 72 h and the controlled deterioration test with 25% of moisture at 45 ºC for 24 h, respectively. Using these tests, it was possible to differentiate the species of passion fruit, collected from different altitudes. The seeds of the yellow passion fruit and the seeds, collected from higher altitudes presented higher physiological quality in this study.

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Germination characteristics ofGymnocalycium monvillei(Cactaceae) along its entire altitudinal range

Cited by 27 publications

References 54 publications

Characteristics of fruits and seeds of cereus plants (cactaceae) grown in South and Northeastern Brazil

Characteristics of fruits and seeds of cereus plants (cactaceae) grown in South and Northeastern Brazil

Asociaciones entre las características reproductivas y la abundancia en Gymnocalycium quehlianum (Cactaceae) a lo largo de un gradiente altitudinal

The physiological quality of the seeds of passion fruit (Passiflora spp.) grown at different altitudes

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