Physiological quality of<i> Syagrus schizophylla</i> (Arecaceae) seeds during storage

Beltrame, Rômulo André; Jasmim, Janie M; Vieira, Henrique Duarte

doi:10.15258/sst.2018.46.2.11

Cited by 3 publications

(6 citation statements)

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“…Thus, these seeds can be classified as orthodox (11). However, studying desiccation tolerance (TD) and viability during seed storage of the S. schizophylla palm, decreasing seed moisture from 21.3 to 11.6% caused more than 50% drop in germination percentage (3). Furthermore, no germination occurred below 11.6%, allowing S. schizophylla seeds to be classified as recalcitrant (3).…”

Section: Resultsmentioning

confidence: 99%

“…However, studying desiccation tolerance (TD) and viability during seed storage of the S. schizophylla palm, decreasing seed moisture from 21.3 to 11.6% caused more than 50% drop in germination percentage (3). Furthermore, no germination occurred below 11.6%, allowing S. schizophylla seeds to be classified as recalcitrant (3). In brief, different palm species show different behaviors in relation to seed recalcitrance, requiring different methodologies for storage and propagation.…”

Section: Resultsmentioning

confidence: 99%

“…At 65 days, the following evaluations were made: i) length of the longest root (cm), from collar to tip of the longest root; ii) root/shoot length (cm), area (cm 2 ), volume (cm 3 ) and diameter (mm) were obtained using images and the WinRhizo Pro 2007a software, coupled to a scanner. iii) eophyll length -measured with a digital calliper, between the base and the apex; iv) collar diameter, measured with a digital calliper at seedling base; v) total fresh and dry seedling weights.…”

Section: Seedling Morphological Evaluationsmentioning

confidence: 99%

“…According to Beltrame et al (2018), considering different categories of orthodox, intermediate and recalcitrant seeds, with different levels of TD, requiring specific conditions to maintain physiological quality and ensure viability over time, turns indispensable.…”

Section: Significantmentioning

confidence: 99%

“…Palms are among the most cultivated plants worldwide. The species domestication, linked to the development of agriculture, represents a significant step in human development (3,22).…”

Section: Introductionmentioning

confidence: 99%

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Desiccation, storage and physiological quality of Phoenix roebelenii O’Brien (Arecaceae) seeds

et al. 2022

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Phoenix roebelenii is a palm species widely used in Brazil due to its exuberant leaves and adaptability to different climatic variations. For proper propagation, detailed information about seed viability, vigor and longevity subjected to dehydration and storage is yet to be obtained. For this purpose, the present research comprised two stages. The first one aimed at evaluating the response of seeds to desiccation and storage based on formal protocols. In the second stage, seeds were desiccated to 33, 30, 25, 23, 20, 18, 16, 12, 10 and 7% of water content by monitoring water loss in a convection oven at 35±2°C. After reaching each established water content, the seeds were subjected to germination tests. At 65 days after sowing, root length, root area, volume and diameter, shoot and eophyll length, and total seedling fresh and dry weights, were measured. Significant increases in germination and eophyll length were observed for lower seed water contents. Aversely, collar diameter decreased with seed desiccation. Highlights: Phoenix roebelenii seeds are orthodox. Reduced seed water content increased the percentage of germination, the germination speed index, and eophyll length of Phoenix roebelenii seedlings. Significant increases in germination and eophyll length were observed for lower seed water contents. Aversely, collar diameter decreased with seed desiccation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Seedling Morphological Evaluationsmentioning

confidence: 99%

Section: Significantmentioning

confidence: 99%

“…Palms are among the most cultivated plants worldwide. The species domestication, linked to the development of agriculture, represents a significant step in human development (3,22).…”

Section: Introductionmentioning

confidence: 99%

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Desiccation, storage and physiological quality of Phoenix roebelenii O’Brien (Arecaceae) seeds

et al. 2022

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Ecological insights into the coexistence of dormancy and desiccation-sensitivity in Arecaceae species

Jaganathan

2021

Annals of Forest Science

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Key message Mechanisms controlling germination of > 2600 Arecaceae species adapted to the tropical forests are not clearly understood. This contribution underpins the notion that the coexistence of dormancy and desiccation sensitivity in some Arecaceae species could significantly affect the germination ecology. Although the evolutionary and ecological significance behind this occurrence is unknown, these traits together could limit the germination from inappropriate depths and allow dispersal.• Context Dormancy and desiccation sensitivity, i.e., recalcitrance, are considered as mutually exclusive traits that evolved to maximize seed survival after dispersal; the former by allowing seeds to spread germination risk temporally then synchronize germination with a favorable growing season, and the latter by allowing germination immediately. However, a few species from temperate ecosystems have been known to produce seeds that are both dormant and desiccation-sensitive, but little is known about such a relationship in the tropical forests.• Aims To understand if desiccation sensitivity and dormancy can coexist in Arecaceae species, distributed predominantly in the tropical forests, and compare the seed traits found in Arecaceae species with other desiccation-sensitive species.• Methods Information published in international peer-reviewed journals was reviewed and a database with records on seed dormancy and desiccation sensitivity was created and discussed. • ResultsThis literature survey has identified diaspores of 34 Arecaceae species that have both desiccation-sensitivity and an underdeveloped, small embryo, i.e., morphophysiological dormancy or morphological dormancy. In Arecaceae species, desiccation-sensitivity is neither confined to large-sized diaspores, nor all species adapted to dry ecosystems disperse diaspore during the wet-season; features reported to be prevalent in desiccation-sensitive species of other families. Endocarp is proposed to act as a mechanical barrier preventing water loss and also offer protection against physical damage; however, the extent of protection against water loss from internal structures is contentious. • ConclusionThe possible ecological significance of this unique relationship noted in Arecaceae is currently unknown, and this review puts forward "testable" hypotheses that call for more studies on germination ecology focusing on dispersal and burial.

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Water immersion and one-year storage influence the germination of the pyrenes of Copernicia alba Morong, a palm tree from a neotropical wetland

Soares

Daibes

Damasceno‐Junior

et al. 2022

Hoehnea

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Palm seeds are known for displaying dormancy and a thick endocarp that delays germination and embryo growth, but water treatments may accelerate their germination process. Additionally, ex-situ conservation of arecaceae species may cause loss of seed viability over time. Data on seed dormancy and storage have been neglected for many native palm species in Brazil. Therefore, we investigated the effect of water treatments and one-year storage on the germination of Copernicia alba Morong, a palm tree from the Brazilian Pantanal wetland. Fresh and stored pyrenes were immersed in water (at room temperature for 24, 48, and 72h) and in hot water (~75°C for 5 and 10-min). Fresh pyrenes germinated up to 84% in control, reaching 100% after water immersion for 48 and 72h. One-year storage reduced germination by almost 50%, but water immersion slightly increased the germination of stored pyrenes. Hot water decreased germination for both fresh and stored pyrenes. Seeds of C. alba may be classified as orthodox seed storage behavior. Taken all together, water treatments at room temperature improved the germination of the pyrenes. In contrast, long-term seed storage and hot-water treatments may jeopardize germination.

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Physiological quality of Syagrus schizophylla (Arecaceae) seeds during storage

Cited by 3 publications

References 0 publications

Desiccation, storage and physiological quality of Phoenix roebelenii O’Brien (Arecaceae) seeds

Desiccation, storage and physiological quality of Phoenix roebelenii O’Brien (Arecaceae) seeds

Ecological insights into the coexistence of dormancy and desiccation-sensitivity in Arecaceae species

Water immersion and one-year storage influence the germination of the pyrenes of Copernicia alba Morong, a palm tree from a neotropical wetland

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