Armazenamento de sementes de xique-xique

Abud, Haynna Fernandes; Pereira, Diego de Sousa; Gonçalves, Nayara Roberto; Pereira, Magnum de Sousa; Bezerra, Antônio Marcos Esmeraldo

doi:10.1590/s0101-31222012000300015

Cited by 10 publications

(11 citation statements)

References 15 publications

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“…Storage at low temperatures allows the control of temperature and moisture, ensuring reduction or interruption of respiration, cell division and other metabolic processes that increase the degree of deterioration of the seed reserve compounds. This practice allows vegetal material to be stored without suffering genetic modification for a long time (Vázquez-Yanes & Rojas-Aréchiga 1996;Engelmann 2004;Walters et al 2004;Abud et al 2012). After being stored at low temperature conditions, the seeds of some species can germinate significantly faster than non-stored seeds or seeds stored at room temperature, as we observed for seeds of M. sergipensis and M. zehntneri stored in a cold chamber and a freezer.…”

Section: Discussionmentioning

confidence: 73%

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Seed storage of Brazilian cacti species in different threat categories

Santos

Hassemer

Meiado

2018

Plant Species Biology

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Cactaceae is considered the fifth most endangered taxonomic group. In light of this, the aim of this study was to evaluate the efficiency of different low‐temperature storage techniques in maintaining the viability of seeds of cacti in different threat categories. Seeds of six cacti taxa were stored in a cold chamber (8°C), a freezer (−5°C), in liquid nitrogen (−196°C) and at room temperature (25–27°C) for a period of 0, 1, 3, 6, 9 and 13 months. At each evaluation interval we removed a seed sample for each taxon studied, which was distributed into four repetitions of 25 seeds maintained at room temperature under 12‐h light/dark photoperiods. We evaluated the germinability, mean germination time and synchronization index. Most of the studied taxa presented germinability of above 50%, which was influenced by time and by storage temperatures. Also, most taxa stored at room temperature presented a significant reduction in germinability, whereas almost all taxa showed maintenance of the seed viability when stored in a cold chamber, a freezer or liquid nitrogen. This response can be justified by the reduction of the seed metabolism and the degradation of the reserve compounds of the seeds while at lower temperatures. Our results indicate that storage at low temperatures is an effective method for the conservation of cacti seeds and can be used for the formation of artificial seed banks of threatened cacti species.

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Section: Discussionmentioning

confidence: 73%

“…; Abud et al . ). After being stored at low temperature conditions, the seeds of some species can germinate significantly faster than non‐stored seeds or seeds stored at room temperature, as we observed for seeds of M. sergipensis and M. zehntneri stored in a cold chamber and a freezer.…”

Section: Discussionmentioning

confidence: 97%

Seed storage of Brazilian cacti species in different threat categories

Santos

Hassemer

Meiado

2018

Plant Species Biology

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“…The largest decrease was observed when the seeds were subjected to the highest temperatures, 35 and 40 ºC, regardless of the locality. Abud et al (2012) claim that studies related to germination and viability of Cactaceae seeds native from the Northeast region are still scarce, and there are few in scientific literature. Seeds from different species present variable germinative behavior according to the temperature, which may provide information on biological and ecological interest (LABOURIAU, 1983).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, determining suitable technologies to enable the use of seeds from native cactus species that develop in these regions constitute important tools for the implementation of afforestation and reforestation programs in Northeastern Brazil. Germination and viability studies of native Cactaceae seeds are scarce in the Northeast, and few results can be found in the scientific literature (ABUD et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Seed vigor and germination of facheiro plants (Pilosocereus catingicola (Gurke) Byles & Rowley Subsp. Salvadorensis (Werderm.) Zappi (Cactaceae) at different temperatures

Medeiros

Souza

Azerêdo

et al. 2017

SCA

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Several species of endemic Cactaceae are found in northeastern Brazil, which are important plants to the local fauna and flora; nevertheless, there are only a few studies assessing the germination of this plant genus. Understanding the germination of species native to the Caatinga is essential to subsidize conservation actions for such ecosystem. The objective of this study was to investigate the influence of three localities and different temperatures on the vigor and germination of facheiro seeds. The experiment was conducted by evaluating seed vigor and germination in three distinct areas (Arara, Bananeiras, and Boa Vista) at different temperatures (20, 25, 30, 35, 40, and 20-30 ºC). Quantitative data were submitted to polynomial regression analysis at 5% significance with four replicates of 50 seeds. In Arara, germination rates at 20 and 25 ºC reached 96% and, at 30 ºC, 86%. The temperatures of 25 and 30 ºC presented the best germination speed index. For the three studied areas, the highest germination rates were recorded at a constant temperature of 25 ºC and at the alternating temperature (20-30 ºC). Yet the highest germination speed was reached at 30 ºC. Based on its sexual propagation, the taxon in question is able to survive in environments with temperatures ranging from 20 to 30 ºC, as seen in the studied habitats.

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“…Ex Rowl.) with initial water content ranging from 7 to 12%, permeable package (multilayered paper bag) was the ideal storage condition to maintain seed viability for 180 days, in laboratory natural environment at 26.6 °C and 76.9% relative humidity (Abud et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Germination and vigor of seeds of Magonia pubescens A. St.-Hil. submitted to storage and pre-imbibition in water

et al. 2017

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ABSTRACT-Timbó (Magonia pubescens A. St.-Hil.) is a species with ornamental potential, which can be used in composition of gardens, squares and especially in streets landscaping. It is also suitable for planting in degraded areas of permanent preservation. This work aimed to verify the effect of seed size, storage and pre-imbibition time on seed germination and vigor. The test design was completely randomized, in a plot scheme subdivided in time. The main plots were seed size (large and small), packaging (0.5 mm-thick transparent polyethylene and kraft paper bag), and time of imbibition in water (0, 12 and 24 hours); and as subplots, it was considerate the storage times (0, 3, 6, 9 and 12 months). The tests were carried out in five replications of ten seeds, and the evaluated variables were: water content of the seeds, percentage of germination (% G), mean germination time (MGT), shoot height (cm), collar diameter (mm), number of leaves, and fresh and dry mass of the aerial part (g). The size of the seed did not influence the germination percentage, but large seeds formed more vigorous seedlings. The storage did not affect seeds germination, nor the vigor of the seedlings. Seed preimbibition did not influence the percentage of germination, but the mean germination time decreased, and more vigorous seedlings were formed. In order to obtain more vigorous Timbó seedlings, the best option is to use large seeds. They can be stored for up to 12 months without losing vigor and pre-soaked to accelerate the beginning of germination, thus forming a more homogeneous lot of seedlings. . Index terms: timbó, Sapindaceae, native plant, seed storage.Germinação e vigor de sementes de Magonia pubescens A. St.-Hil. submetidas ao armazenamento e pré-embebição em água RESUMO -O timbó (Magonia pubescens A. St.-Hil.) é uma espécie com potencial ornamental, podendo ser usado na composição de jardins e praças e, principalmente, para arborização de ruas; é ainda indicado para plantios em áreas degradadas de preservação permanente. O objetivo neste trabalho foi verificar o efeito do tamanho das sementes, do armazenamento e do tempo de pré-embebição das sementes na sua germinação e vigor. O delineamento utilizado foi inteiramente casualizado, em parcela subdividida no tempo, sendo alocados na parcela principal: tamanho da semente (grandes e pequenas), embalagem (polietileno transparente com espessura de 0,5 mm e saco de papel kraft) e tempo de embebição em água (0, 12 e 24 horas); e nas subparcelas o tempo de armazenamento (0, 3, 6, 9 e 12 meses), com cinco repetições de dez sementes. As características avaliadas foram o teor de água das sementes, a porcentagem de germinação (%G), o tempo médio de germinação (TMG), a altura da parte aérea (cm), o diâmetro do colo (mm), o número de folhas e as massas fresca e seca da parte aérea (g). O tamanho da semente não influenciou na porcentagem de germinação, porém, as sementes grandes formaram plântulas mais vigorosas. O armazenamento não prejudicou a germinação das sementes, nem mesmo o vigor das p...

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Armazenamento de sementes de xique-xique

Cited by 10 publications

References 15 publications

Seed storage of Brazilian cacti species in different threat categories

Seed storage of Brazilian cacti species in different threat categories

Seed vigor and germination of facheiro plants (Pilosocereus catingicola (Gurke) Byles & Rowley Subsp. Salvadorensis (Werderm.) Zappi (Cactaceae) at different temperatures

Germination and vigor of seeds of Magonia pubescens A. St.-Hil. submitted to storage and pre-imbibition in water

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