Germination of Cenchrus ciliaris, Pennisetum divisum, and Panicum turgidum is seasonally dependent

Bhatt, Arvind; Batista‐Silva, Willian; Gallacher, David J.; Pompelli, Marcelo F.

doi:10.1139/cjb-2019-0194

Cited by 13 publications

(7 citation statements)

References 61 publications

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“…On rocky slopes, D. schneideriana seeds germinated over a wide temperature range, R. simsii had the highest G% at 10/20 °C and W. japonica at 20/30 °C. Hence, optimal temperature requirements for germination show considerable variations among species (Baskin & Baskin, 2014), which is important to drive the seasonality of recruitment (Bhatt et al ., 2020). This information could be applied in a practical sense for determining the timing of seed sowing for restoration purposes (Dürr et al ., 2015).…”

Section: Discussionmentioning

confidence: 99%

Germination of shrub species from Chinese subtropical forests: implications for restoration

et al. 2023

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Incorporating native shrubs into restoration projects can improve biodiversity conservation and enhance the sustainability of ecosystem functions. Shrubs grow under different forest canopy structures, having varied microclimatic conditions according to forest type and composition. Currently, there is a lack of information on propagation from seed and planting material availability for the utilization of shrubs in forest restoration.• In the present study, we evaluated the effects of temperature and light on germination of ten shrub species (Ardisia japonica, Callicarpa cathayana, Callicarpa giraldii var. subcanescens, Deutzia schneideriana, Fraxinus sieboldiana, Hydrangea chinensis, Maesa japonica, Rhododendron simsii, Spiraea japonica var. fortunei and Weigela japonica var. sinica) occurring in subtropical forests in China.• No seeds of any species germinated in the coolest thermal regime (5/10 °C), while optimal temperature requirements varied from 10/20 °C to 25/35 °C. Seeds of smallseeded species had higher germination percentages in the light treatments, while larger seeds were not photoblastic. There was no relationship between germination in the light and the seed shape index.• Our results may assist in identification of seed traits and suitable shrub species for restoration in specific forest types, thus aiding native forest recovery of structure and composition. Successful recovery leads to enhanced biodiversity, reestablishment of microhabitats and ecological interactions in the forest understorey.

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Section: Discussionmentioning

confidence: 99%

Germination of shrub species from Chinese subtropical forests: implications for restoration

et al. 2023

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“…Germination responses can be difficult to predict over time and space, as they are affected by several environmental factors such as temperature, light, and soil moisture (Baskin and Baskin, 2014;Bhatt et al, 2019Bhatt et al, , 2020Bhatt et al, , 2021a. Identification of the environmental factors that are responsible for maintaining phenotypic variation in nature is essential to understand the evolutionary mechanisms of plants (Larios et al, 2014;Manzano-Piedras et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Interpopulation variation in seed traits of five Polygonaceae

et al. 2023

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Interpopulation variability in seed traits may drive the regeneration capacity of a species to colonize different environments. In the present study, we evaluated the variation in seed physical traits (mass / size, water imbibition, shape index) and physiological traits (germination) of five Polygonaceae species. Seeds of Polygonum lapathifolium var. salicifolium, P. lapathifolium, Reynoutria japonica, Rumex trisetifer, and R. obtusifolius were collected from two or three populations in Jiujiang, China. Physical seed traits were measured before germination tests conducted under different combinations of light and temperatures. Most species had a significant variation in seed physical and physiological traits, although populations are geographically close. Interpopulation variation in seed traits appeared to be species-specific, with the highest variation for R. japonica and lowest for R. trisetifer seeds. Germination response to temperature and light conditions also varied among species and populations, being mostly inhibited in the dark treatments. The light dependence of germination can be related to the small seed size, except for the round-seeded Rumex, depending on the temperature regime. Optimal temperature ranges mainly varied from 10/20°C to 25/35°C, with significant decreases in germination percentage at both coolest and warmest extremes. Germination requirements seem to be related to altitudinal gradients in populations of P. lapathifolium and R. japonica seeds.

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“…Low germination synchrony is common in xeric plant species and has been linked to desert population persistence (Song et al, 2012; Lozano-Isla et al, 2018; Nimac et al, 2018; Bhatt et al, 2020a). In the present study, individuals within the population showed significant variation in MGT, depending on the species.…”

Section: Discussionmentioning

confidence: 99%

“…This benefits population persistence and reduces the risk of a local extinction event (Levy et al, 2012; Mitchell et al, 2017) in this environment of harsh and spatiotemporally unpredictable conditions for life. In other words, we can speculate that the higher the MGT and the lower the SYN, the greater the reproductive chance of the species, exceptionally in hostile environments such as deserts (Pompelli et al, 2010; Miranda et al, 2011; Moncaleano-Escandon et al, 2013; Lozano-Isla et al, 2018; Bhatt et al, 2019c, 2020a). Among the studied species, H. salicornicum showed the highest variation in seed germinability within the individuals of the same population followed by A. macrostachyum , S. rosmarinus and H. iraqensis .…”

Section: Discussionmentioning

confidence: 99%

Seed mass, dormancy and germinability variation among maternal plants of four Arabian halophytes

et al. 2022

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Coastal desert vegetation of the Arabian Peninsula is almost entirely dominated by halophytes. Natural populations provide a genetic resource for ecological remediation and may also have direct economic value. High intrapopulation variation of seed traits is presumed to increase population persistence in the unpredictable climatic conditions of this hyper-arid desert. We investigated whether intrapopulation variation of seed mass, dormancy and germinability of four species was attributable to maternal individuals. Arthrocnemum macrostachyum, Halothamnus iraquensis, Haloxylon salicornicum and Seidlitzia rosmarinus are commonly distributed Arabian halophytes with differing seed weight variation. All species exhibited a higher germination when exposed daily to 12 h light, compared to seeds in darkness. A higher germination was correlated with a shorter germination time. For H. iraquensis and S. rosmarinus, a shorter germination time was negatively correlated with germination synchrony. H. salicornicum showed the highest intrapopulation variation of seed traits, followed by A. macrostachyum, S. rosmarinus and H. iraqensis. We found that individuals within populations of all the studied species showed variability in germination but the extent of variation was species-specific. The variation in seed mass and germination among the individuals of the studied species may facilitate a temporal distribution of germination, which may reduce the risk of seed bank exhaustion. The results of this study could assist conservation and management by improving the efficiency of seed collection from wild populations of these species.

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Germination of Cenchrus ciliaris, Pennisetum divisum, and Panicum turgidum is seasonally dependent

Cited by 13 publications

References 61 publications

Germination of shrub species from Chinese subtropical forests: implications for restoration

Germination of shrub species from Chinese subtropical forests: implications for restoration

Interpopulation variation in seed traits of five Polygonaceae

Seed mass, dormancy and germinability variation among maternal plants of four Arabian halophytes

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