Cereus jamacaru seed germination and initial seedling establishment as a function of light and temperature conditions

Alencar, Nara Lídia Mendes; Gomes-Filho, Enéas; Innecco, Renato

doi:10.1590/s0103-90162012000100010

Cited by 11 publications

(12 citation statements)

References 14 publications

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“…Mandacaru seeds subjected to a constant temperature of 25 ºC and photoperiod of 12 h showed the highest germination percentage (89%) and the highest germination speed index value (6.7), which did not differ from that obtained at 30 °C (Table 1), which is consistent with the results found by Alencar et al (2012a). A similar germination behavior was observed for Pilosocereus pachycladus seeds, where constant 25 and 30 °C temperatures provided the best results in terms of percentage and germination speed (Abud et al, 2010).…”

Section: Resultssupporting

confidence: 91%

“…The aspects of germination and morphological characterization of fruits, seeds and seedlings, in cacti, particularly of native species in Brazil are scarce in the literature. However, several species of cacti have been characterized regarding their morphological, physiological and ecophysiological aspects, such as in: Stenocereus stellatus (Rojas-Aréchiga et al, 2001); Stenocereus queretaroensis (Barrera and Nobel, 2003); Stenocereus queretaroensis (Loza-Cornejo et al, 2003); Hylocereus setaceus (Simão et al, 2007); Denmoza rhodacantha (Méndez, 2007); Melocactus bahiensis (Lone et al, 2007); Trichocereus terscheckii (Ortega-Baes and Rojas-Aréchiga, 2007); Hylocereus undatus (Andrade et al, 2008); Pilosocereus pachycladus (Abud et al, 2010); Pilosocereus gounellei (Abud et al, 2012); Cereus jamacaru (Alencar et al, 2012a;2012b), among other works.…”

Section: Introductionmentioning

confidence: 99%

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Germination and morphology of fruits, seeds and plants of Cereus jamacaru DC

et al. 2013

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-This work aimed to evaluate the germination and morphology of fruits, seeds and description of plant growth stages of mandacaru. The experimental design was completely randomized in a 2 x 3 factorial arrangement, consisting of combinations of two light conditions and three temperature regimes. A daily count of the number of germinated seeds was performed until the 16 th day after sowing in order to determine the percentage, speed and time of germination. External and internal aspects were considered for the morphological description. The germination and the development of plants were evaluated for 150 days and featured eight stages of growth, based on morphological differentiation. The fruit has 154,66 ± 40,01 g mass, 82,26 ± 5,78 mm length, 62,63 ± 6,63 mm diameter and 1439 ± 189,78 seeds. The temperature of 25 °C under a photoperiod of 12 h provides the highest rate of seed germination and the seeds behave as neutral photoblastic. The germination is epigeal and fanerocotyledonary. The growth is slow and after 150 days of sowing the plant presents epicotyl with a large amount of thorns, where the whole plant is 325.30 mm in length.Index terms: Cactaceae, mandacaru, morphology, seedling growth.Germinação e morfologia de frutos, sementes e plantas de Cereus jamacaru DC RESUMO -Objetivou-se avaliar a germinação, morfologia de frutos, sementes e descrição de estádios de crescimento de plantas de mandacaru. O delineamento experimental foi o inteiramente casualizado, num arranjo fatorial 2 x 3, constituídos pelas combinações de duas condições de luminosidade e três regimes de temperatura. Contagens diárias do número de sementes germinadas foram realizadas até o 16° dia da semeadura para a determinação da porcentagem, índice de velocidade e tempo médio de germinação. Para a descrição morfológica das sementes consideraram-se aspectos externos e internos. O processo germinativo e o desenvolvimento das plantas durante 150 dias foram avaliados sendo caracterizados oito estádios de crescimento, baseados na diferenciação morfológica. O fruto apresenta 154,66 ± 40,01 g de massa, comprimento de 82,26 ± 5,78 mm, diâmetro de 62,63 ± 6,63 mm e 1439 ± 189,78 sementes. A temperatura de 25 ºC sob fotoperíodo de 12 horas proporciona a maior taxa de germinação e as sementes comportam-se como fotoblásticas neutras. A germinação é epígea e fanerocotiledonar. O crescimento é lento e após 150 dias da semeadura a planta encontra-se com epicótilo com presença de grande quantidade de espinhos, onde a planta inteira apresenta 325,30 mm de comprimento.Termos para indexação: Cactaceae, mandacaru, morfologia, crescimento de plantas.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Germination and morphology of fruits, seeds and plants of Cereus jamacaru DC

et al. 2013

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“…Cereus jamacaru DC, popularly known as ‘mandacaru’, is a representative species of the Cactaceae family and found in the Caatinga vegetation in Brazil [1]. C. jamacaru cladodes are used as diuretics and to lower the arterial blood pressure in traditional medicine.…”

Section: Introductionmentioning

confidence: 99%

Genotoxicity and pharmacokinetic characterization of Cereus jamacaru ethanolic extract in rats

Medeiros

Bortolin

et al. 2019

Bioscience Reports

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The effect of Cereus jamacaru ethanolic extract in rats was analyzed using genotoxicity assays and liver ABCB1 and CYP2D4 gene expression. The lyophilized extract of C. jamacaru cladodes was analyzed with LC–MS/MS. Male Wistar rats (n=36) were equally distributed into six groups that did (+) or did not (−) receive cyclophosphamide treatments: Control (−); Control (+); EXP 1 (−), and EXP 1 (+), both treated with 210 mg/kg of ethanolic extract; and EXP 2 (−) and EXP 2 (+), both treated with 420 mg/kg of ethanolic extract. After 30 d of treatment, body weight and food and water intake were monitored. Right femur of the rats and spinal canal fluid were harvested and used for genotoxicity assays, and the liver samples were used for gene expression studies. The phytochemical analysis identified novel compounds. Animals treated with C. jamacaru showed lower body weight and food ingestion compared to controls (P<0.05). The genotoxicity assay showed an absence of ethanolic extract cytotoxicity. CYP2D4 expression was higher in EXP 2 groups compared with EXP 1 (−) group (P<0.05). ABCB1A expression was higher in negative groups compared with the positive groups. These results indicated a new phytochemical characterization of C. jamacaru and its effect on food ingestion and body weight gain. Moreover, the genotoxicity assay suggested that C. jamacaru ethanolic extract treatment presents significant intrinsic genotoxic potential and the enhanced expression of ABCB1 and CYP2D4 on C. jamacaru extract treatment suggests a role of the efflux transporter and microsomal enzyme, respectively, in C. jamacaru pharmacokinetics.

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“…Information about seed germination is important for understanding the reproductive strategy of a species and its population dynamics (Alencar et al 2012). Various biotic and abiotic factors can havean influence on seed germination rates.…”

Section: Introductionmentioning

confidence: 99%

“…Characterization of seed predation and germination are of significant importance because they are closely related to the reproductive success of plants, since seed predators depreciate the endosperm and/or embryo (Alencar et al 2012). Remaining populations of babassu palm are found in impacted areas, such as pastures, small gallery forests and savannas fragments in north and northwestern Minas Gerais and southern Bahia, Brazil (Lorenzi et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Do fruit morphology and scarification affect germination and predation rates of Babassu seeds?

et al. 2016

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Seed predation is a natural phenomenon that can occur either before or after dispersal and can signifi cantly reduce the economic value and reproductive potential of plants. Th e babassu palm (Attalea vitrivir, Arecaceae) is important to rural communities that extract oil from its fruits for a wide variety of uses. We evaluated the predation and germination of A. vitrivirseeds in Pandeiros River Environmental Protection Area (EPA-Pandeiros) in Minas Gerais State, Brazil. Sixty individual plants were evaluated to determine their fruiting patterns. Seed predation and germination were evaluated in the natural environment for eight months for fruits divided into two treatments: scarifi ed and intact. Germination of fruits submitted to these same treatments was also evaluated under greenhouse conditions. Our results indicated that fruiting is continuous in this species and that fruit morphology does not infl uence either germination or predation. Likewise, fruit scarifi cation did not infl uence seed germination. Pachymerus cardo (Coleoptera: Chrysomelidae) preferentially oviposited on scarifi ed fruits, but only after their dispersal. Th e predation rate in the natural environment was 14.6%. Germination was not observed under natural conditions, but reached 33.05% under greenhouse conditions.

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Cereus jamacaru seed germination and initial seedling establishment as a function of light and temperature conditions

Cited by 11 publications

References 14 publications

Germination and morphology of fruits, seeds and plants of Cereus jamacaru DC

Germination and morphology of fruits, seeds and plants of Cereus jamacaru DC

Genotoxicity and pharmacokinetic characterization of Cereus jamacaru ethanolic extract in rats

Do fruit morphology and scarification affect germination and predation rates of Babassu seeds?

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