Effective breaking of dormancy of Scaevola sericea seeds with seawater, improved germination, and reliable viability testing with 2,3,5-triphenyl-tetrazolium chloride

Liang, Hanzhi; Xiong, Yan; Guo, Baochuan; Yan, Haifeng; Jian, Shuguang; Ren, Hai; Zeng, Songjun; Wu, Kunlin; Silva, Jaime A. Teixeira da; Xiong, Yongqiang; Ma, Guohua

doi:10.1016/j.sajb.2020.04.018

Cited by 6 publications

(3 citation statements)

References 21 publications

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“…For initial seed moisture measurement, about 5 g seeds were dried in an oven at 103 °C until constant weight, and the percentage of moisture was calculated based on fresh weight (Baladi & Balouchi 2016). The seeds were cut longitudinally and placed in 0.4% 2,3,5-triphenyl-tetrazolium chloride (TTC) solution for 3 h at 30 °C, and the seeds with pink or red embryos indicated viability (Liang et al 2020). Intact seeds were placed in a 100-mL beaker, soaked with distilled water, and allowed to swell at 25 °C.…”

Section: Seed Characteristicsmentioning

confidence: 99%

“…To regenerate successfully, it is essential for plants to produce viable seeds (Wotton 2018). The germination of seed is crucial to the propagation of plant species (Rajjou et al 2012, Liang et al 2020. To reduce the impact of adverse environments, seeds of many species are dormant until environmental conditions become favourable, which is a trait exhibited by newly produced seeds (Finch-Savage & Leubner-Metzger 2006, Kranner et al 2010, Lee & Lopez-Molina 2013.…”

Section: Introductionmentioning

confidence: 99%

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Physiological dormancy and dormancy release of Sassafras tzumu, a colored-leaf tree species with high landscape and economic value

Chen¹,

Jiang²,

Liu³

et al. 2022

iForest

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Sassafras tzumu is one of the most valuable tree species in southern China. However, the dormancy of the seed limits its seedling quality. In order to improve the germination percentage of seeds, characteristics, causes of dormancy, changes in endogenous hormones and nutrients during storage were investigated. The results showed that seed viability was 78.11%, and the highest water absorption rate was 26.09%. The germination percentage of the embryo without cotyledon was 21.13%, but intact seed and embryo could not germinate on hormone-free medium. Seed embryo and coat extracts were found to have a significant inhibitory effect on seed germination. Germination percentage were significantly positively correlated to free amino content (p < 0.01) and negatively correlated to soluble sugar content (p < 0.05) during storage. The levels of GA3 and GA3/ABA had significant effects on the germination percentage of S. tzumu seed storage at 4°C. The results suggest that S. tzumu seeds are in intermediate physiological dormancy at maturity and are mainly caused by the presence of inhibitory substances in the seed tissues. Furthermore, changes in endogenous hormones and metabolism of nutrients at 4°C can significantly promote the release from dormancy of S. tzumu seeds.

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Section: Seed Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physiological dormancy and dormancy release of Sassafras tzumu, a colored-leaf tree species with high landscape and economic value

Chen¹,

Jiang²,

Liu³

et al. 2022

iForest

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show abstract

“…These ocean‐dispersed, or “thalassochorous,” species constitute the majority of plant species on atolls and are common on large islands as well (Carlquist, 1967). These taxa often have adaptations to promote survival in salt water (Lawn & Cottrell, 2016), tolerance of salty soil (Kekere, 2014), and even enhanced germination following saline immersion (Liang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Seed flotation in some widespread, oceanic‐dispersed trees and their island‐endemic congeners

Brodie,

Brodie

2024

Ecological Research

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Variation in plant dispersal capabilities strongly influences the assembly of island plant communities. Many tropical plants have seeds capable of long‐distance, often oceanic, dispersal; in some cases, these taxa speciate into island interior endemics with reduced dispersal capabilities, though whether this is a general pattern is debated. Flotation times are highly variable among plants with oceanic dispersal and between such plants and their inland congeners. Here, we experimentally compared salt‐water flotation in three woody plant genera in Palau, Micronesia, comparing broadly distributed and island endemic species within each genus. The widespread Calophyllum inophyllum (with oceanic and vertebrate dispersal), C. soulattri (vertebrate dispersal), and Terminalia catappa had substantially longer flotation than their inland endemic relatives C. pelewense and T. crassipes. This supports the “Loss of dispersal ability” hypothesis for Calophyllum though, for Terminalia, additional phylogenetic information is needed to determine T. crassipes' sister species. Seed flotation in the widespread, oceanic dispersed Pandanus tectorius did not significantly differ from that of the Palau endemics P. palawensis and P. aimiriikensis. Our results highlight that differences among taxa in dispersal modes, speciation modes, and their interactions may influence the assembly of island floras.

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Evaluating the Seasonal Change of Temperature on Shrub Seeds in Landscape Plan

Meng

2021

Iran J Sci Technol Trans Civ Eng

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Effective breaking of dormancy of Scaevola sericea seeds with seawater, improved germination, and reliable viability testing with 2,3,5-triphenyl-tetrazolium chloride

Cited by 6 publications

References 21 publications

Physiological dormancy and dormancy release of Sassafras tzumu, a colored-leaf tree species with high landscape and economic value

Physiological dormancy and dormancy release of Sassafras tzumu, a colored-leaf tree species with high landscape and economic value

Seed flotation in some widespread, oceanic‐dispersed trees and their island‐endemic congeners

Evaluating the Seasonal Change of Temperature on Shrub Seeds in Landscape Plan

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