The germination of seeds of Epiphyllum phyllanthus (L.) Haw. (Cactaceae) is controlled by phytochrome and by nonphytochrome related process

Simão, Edson; Nakamura, Adriana Tiemi; Takaki, Massanori

doi:10.1590/s1676-06032010000100011

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…However, light improved G on the paper at both 25 and 30°C compared with darkness, with no significant luminosity effect on the paper at 20°C. Previous studies with E. phyllanthus (L.) Haworth seeds also demonstrated their sensitivity to light, which promotes their germination (Simão et al, 2010). A total germination was observed both in the presence and absence of light.…”

Section: Source Of Variationmentioning

confidence: 67%

Optimal conditions for germination of seeds of Epiphyllum oxypetalum

Ortiz¹,

Moritz²,

Oliveira³

et al. 2014

Afr. J. Agric. Res.

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Queen of the night (Epiphyllum oxypetalum), an ornamental cactus, is widespread in many countries. The demand for this species is increasing because esthetic quality of its flowers is appreciated. This study aimed to analyze the influence of temperature, substrate and luminosity on the germination of E. oxypetalum seeds. A completely randomized design with four replications was used in a 3 x 2 x 2 factorial scheme, corresponding to three temperatures (20, 25 and 30°C), two substrates (blotting paper and sand of average particle size) and two luminosity conditions (light and dark). The percentage germination, germination speed index (GSI) and mean germination time (MGT) were evaluated. The 20°C treatment combined with the sand substrate and the presence of light provided favorable conditions for the germination of the seeds of E. oxypetalum, yielding a higher GSI and a shorter MGT; however, the species may be considered as preferentially photoblastic because of its ability to germinate in darkness.

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Section: Source Of Variationmentioning

confidence: 67%

Optimal conditions for germination of seeds of Epiphyllum oxypetalum

Ortiz¹,

Moritz²,

Oliveira³

et al. 2014

Afr. J. Agric. Res.

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“…La respuesta de germinación post-almacenamiento registrada, no está generalizada en el grupo NV de Stenocereus thurberi, ya que otros autores (además de que no han referido viviparidad), han registrado 66% de germinación en semillas de uno a dos meses de cosecha (Yang et al, 2003), y 85 a 93% en semillas de cinco meses (Sánchez-Soto et al, 2010). Para Epiphyllum phyllanthus, Simão et al (2010) reconocen que aún después de 12 meses de almacenamiento, las semillas (sin precocidad) originadas de progenitores vivíparos, siguen siendo germinables.…”

Section: Discussionunclassified

“…Buxb. (Arreola-Nava y Terrazas, 2003) y Epiphyllum phyllanthus, una cactácea epífita (Cota-Sánchez y Abreu, 2007;Simão et al, 2010). En el caso de Ferocactus herrerae J. G. Ortega, los frutos tienen un poro que abre en la base, por donde escapan las semillas y probablemente también las plántulas germinadas 203).…”

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Almacenamiento de semillas y germinación de Stenocereus thurberi , una cactácea con viviparidad facultativa

et al. 2015

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La estrategia de germinación es fundamental para asegurar la supervivencia de las poblaciones naturales, mientras que el almacenamiento y la viabilidad de las semillas son importantes en programas de repoblación y cultivo. Ambos aspectos están poco estudiados en cactáceas arborescentes vivíparas del Desierto Sonorense. Esta investigación evaluó la germinación de Stenocereus thurberi en plantas no vivíparas y vivíparas; también se estudió el efecto del almacenamiento en semillas remanentes de frutos que presentaron viviparidad, comparada con el comportamiento de la semilla de progenitores no vivíparos. La respuesta en tiempo de inicio (Ti) y tiempo medio de germinación (T50), así como el potencial germinativo (PG) de las semillas, fueron analizados bajo un diseño de bloques al azar con cuatro repeticiones, en cajas bomboneras (bloques) con unidades experimentales de 50 semillas. Los resultados confirmaron mayor velocidad de germinación y alta tolerancia al almacenamiento en las semillas de frutos caracterizados por viviparidad, a la vez que mostraron variación y reducción del porcentaje de germinación con respecto a las semillas de plantas no vivíparas. La germinación precoz combinada con la alta tolerancia del embrión a la desecación son condiciones extraordinarias y muy raras en el reino vegetal, que favorecen el establecimiento de las plantas al permitir que las plántulas ganen vigor desde antes de que ocurra la dispersión.

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“…The aim of this study was to determine the germinability and biochemical contents (protein and carbohydrate) of the seeds of P. amarus collected from ten different sampling points. A portion of the visibly healthy seeds was collected and separated into sink and float seeds by following a standard protocol (Edson et al 2010). The percentage germinability of the seeds (50 seeds placed on wet filter paper with 5 mm distance between them) was measured by germinating them at room temperature.…”

Section: Determination Of Germinability and Biochemical Contentsmentioning

confidence: 99%

Impact of geography on adaptation of Phyllanthus amarus seeds

et al. 2018

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The present study was aimed to evaluate adaptive mechanism in terms of seed characters of collected from ten different locations of Tamil Nadu, India. The adaptive variations among the collected populations were assessed based on the sink and float percentages of the seeds in water, the percentage of seed germination, total protein, carbohydrates and their seedling's growth ability such as shoot and root lengths. From this, we observed that the population had a significantly higher germination percentage of sinking seeds that were attributed to its relatively higher carbohydrate and protein contents than the floating seeds. A comparison of the seed population by cluster analysis and principal coordinate analysis showed that the Chennai population constituted a single clade that was very distinct from the other nine populations, which were further grouped into two sub-clusters. They exhibited a trend consistent with their geographical proximity. Standardised Mantel's tests had revealed that the adaptive diversity of the . population was significantly affected by the geographic distance ( = 0.78, = 2.68,> 0.001), altitude ( = 0.35, = 21.53,> 0.05), minimum temperature ( = 0.43, = 1.49,> 0.01) and maximum temperature ( = 0.49, = 1.67,> 0.001). Seed's characteristics and geographical conditions were correlated along with 19 bioclimatic variables. In dry season, the seedling's rooting ability showed positive correlation, while its protein content exhibited a negative correlation. It is clearly evident from this study that the geographical variables significantly influence the adaptive ability of the ..

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The germination of seeds of Epiphyllum phyllanthus (L.) Haw. (Cactaceae) is controlled by phytochrome and by nonphytochrome related process

Cited by 6 publications

References 25 publications

Optimal conditions for germination of seeds of Epiphyllum oxypetalum

Optimal conditions for germination of seeds of Epiphyllum oxypetalum

Almacenamiento de semillas y germinación de Stenocereus thurberi , una cactácea con viviparidad facultativa

Impact of geography on adaptation of Phyllanthus amarus seeds

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