Local conditions effects on seed germination of Hypericum balearicum L. in response to temperature

Seguí, Neus; Jiménez, María A.; Cursach, Joana

doi:10.1016/j.flora.2021.151896

Cited by 3 publications

(1 citation statement)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Seed mass may play a crucial role in adaptation within a species's geographical range [ 12 , 13 ]. One hypothesis states that habitat quality and local competitive environments are major selective forces driving the evolution of seed and seedling phenotypes [ 14 , 15 ]. Broad surveys have found associations between seed size and environmental conditions, suggesting that variation in seed size may be adaptive [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Seed size variation impacts local adaptation and life-history strategies in a perennial grass

2023

View full text Add to dashboard Cite

Seed mass is an ecologically important trait that often differs considerably among ecotypes. Yet, because few studies examine the impacts of seed mass on adult life-history traits, its role in local adaptation is unclear. In this study, using accessions of Panicum hallii that spanned the two major ecotypes, we examined whether covariation between seed mass, seedling and reproductive traits impacts ecotypic divergence and local adaptation. The perennial grass P. hallii has two distinct ecotypes—a large-seeded upland ecotype adapted to xeric environments and a small-seeded lowland ecotype adapted to mesic environments. In the greenhouse, seed mass varied greatly across P. hallii genotypes in a manner consistent with ecotypic divergence. Seed mass covaried significantly with several seedling and reproductive traits. At field sites representing the habitats of the two ecotypes, seed mass had different impacts on seedling and adult recruitment: selection favoured large seeds in upland habitat and small seeds in lowland habitat, which was consistent with local adaptation. By demonstrating the central role of seed mass in ecotypic differences in P. hallii and its importance to seedling and adult recruitment under field conditions, these studies show that early life-history traits can promote local adaptation and potentially explain ecotype formation.

show abstract

Section: Introductionmentioning

confidence: 99%

Seed size variation impacts local adaptation and life-history strategies in a perennial grass

2023

View full text Add to dashboard Cite

show abstract

Reproductive biology insights for the conservation of Euphorbia fontqueriana, a rare endangered plant species from the western Mediterranean Basin

Far

Cursach

2022

Plant Biosystems - An International Journal Dealing with all As

View full text Add to dashboard Cite

Mucilage affects seed water imbibition and germination time of subtropical monsoonal forbs

Bhatt

Daibes

Chen

et al. 2022

Botany

View full text Add to dashboard Cite

The role of seed mucilage in the moist environments of monsoonal subtropics is poorly understood. We studied germination of six forb species from subtropical monsoonal China. Mucilage presence had little to no effect on G%, except for a significant decline for the large-seeded Prunella vulgaris. Dark treatments reduced G% for all species, while the combination of mucilage removal and high temperatures delayed the mean germination time (MGT). Seed fresh mass was negatively correlated with G%, but only for intact seeds incubated at 12/12 hours of 25/35°C. The MGT of de-mucilaged seeds varied with seed shape index, also under the warmer temperature regime. Temperature and light are fundamental to drive germination processes, and the presence of mucilage influences MGT of subtropical monsoonal species. Presence or absence of mucilage had little to no difference in germination percentage, but can be important to drive germination timing, also promoting water uptake and seed adhesion to soil.

show abstract

Local conditions effects on seed germination of Hypericum balearicum L. in response to temperature

Cited by 3 publications

References 55 publications

Seed size variation impacts local adaptation and life-history strategies in a perennial grass

Seed size variation impacts local adaptation and life-history strategies in a perennial grass

Reproductive biology insights for the conservation of Euphorbia fontqueriana, a rare endangered plant species from the western Mediterranean Basin

Mucilage affects seed water imbibition and germination time of subtropical monsoonal forbs

Contact Info

Product

Resources

About