Potencial fi siológico de diásporos armazenados de Schinopsis brasiliensis Engler

Silva, Monalisa Alves Diniz da; Barboza, Vanessa Renata de Sousa; Silva, Joyce Naiara da; Gonçalves, Edilma Pereira; Viana, Jeandson Silva

doi:10.5935/1806-6690.20220038

Cited by 1 publication

(1 citation statement)

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“…Attention to factors that increase the probability of deterioration is important, such as air temperature and relative humidity and seed water content during the storage period, considering that one of the primary objectives of storage is to keep the germination percentage at the end of the period as close as possible to the initial (SILVA et al, 2022). Soon after reaching the physiological maturity, the seed entries a progressive stage of natural deterioration, whose intensity is dependent on its genetic constitution and physiological, environmental, and stresses conditions over the storage period, among other factors (COSTA, 2012).…”

Section: Discussionmentioning

confidence: 99%

Conservation of seeds of cactaceae species endemic to the caatinga biome: Pilosocereus pachycladus and Tacinga inamoena

2023

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Ecosystems with dry soils are particularly sensitive to climate changes and anthropogenic actions, which represents a threat to the survival of many cactus species. Ex situ seed conservation strategies should be adopted to support in situ conservation. This study evaluated the effect of conservation conditions on germination and vigor of seeds of Pilosocereus pachycladus subsp. pernambucoensis and Tacinga inamoena. The seeds were packaged in paper bags and glass containers and stored under controlled (8 ± 1 °C; 56 ± 2% relative humidity) and non-controlled (24 ± 2 °C; 75 ± 5% relative humidity) environmental conditions for 0 (control), 12, 16, and 20 months. The experiment was conducted in a completely randomized design, in a 2 × 2 × 4 factorial arrangement (conservation environment × packaging × storage period) for each species. The variables evaluated were: water content (%), germination (%), germination speed index (GSI), and mean germination time (MGT). The physiological quality of seeds of both species were preserved when seeds were maintained under controlled environment, regardless of the packaging. However, when stored under non-controlled environment, the packaging in paper bags was more efficient for the conservation of seeds of P. pachycladus subsp. pernambucoensis, and the glass container was more efficient for T. inamoena. This information may be needed for ex situ conservation of these species and to support the recovery of degraded areas susceptible to desertification in the Caatinga biome.

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Section: Discussionmentioning

confidence: 99%