The Ecological Life Cycle of the Cedar Glade Endemic Lobelia gattingeri

Baskin, Jerry M.; Baskin, Carol C.

doi:10.2307/2484550

Cited by 15 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because our results show limited evidence that seed germination is season specific, plants may experience cold at different life stages (i.e., at seed, or rosette, or both for perennials that do not flower their first year). This is similar to Lobelia gattingeri (Baskin and Baskin, 1979) and Campanula americana (Baskin and Baskin, 1984), where seeds are capable of germinating in either autumn or spring. However, in contrast to C. americana, which has an absolute requirement for vernalization regardless of prior stratification, we find significant interactions between stratification and vernalization treatments on traits expressed during later life stages, which may mean that selection is acting across combinations of cold cues.…”

Section: Coastal Perennial Perennialsupporting

confidence: 56%

The role of cold cues at different life stages on germination and flowering phenology

Rubin

Friedman

2018

American J of Botany

View full text Add to dashboard Cite

In general, cold is more important for seed germination in annuals and plants from environments with warm temperatures and variable precipitation. In contrast, cold is more important for flowering in perennials: it accelerates flowering in plants from lower precipitation environments, and it increases flowering proportion in plants from cooler, more stable precipitation environments. We discuss our findings in the context of the variable environments plants experience within a population and the variation encountered across the biogeographic native range of the species.

show abstract

Section: Coastal Perennial Perennialsupporting

confidence: 56%

The role of cold cues at different life stages on germination and flowering phenology

Rubin

Friedman

2018

American J of Botany

View full text Add to dashboard Cite

show abstract

“…Seeds of L. appendiculata are also dormant at maturity and will germinate to high percentages following cold stratification (Baskin and Baskin, 1979). Seeds that had been buried in soil under natural temperature regimes since 1990 were exhumed in March 2005, after receiving a winter cold-stratification treatment.…”

Section: Methodsmentioning

confidence: 99%

Underdeveloped embryos in dwarf seeds and implications for assignment to dormancy class

Baskin

2005

Seed Sci. Res.

Self Cite

View full text Add to dashboard Cite

Studies were conducted to determine if small embryos (i.e. low embryo length:seed length ratio) in mature dwarf seeds (0.2–2 mm) are underdeveloped. In this case, they would grow (inside the seed) prior to germination, and seeds would have morphological or morphophysiological dormancy. Prior to radicle emergence, embryo length in seeds of Drosera anglica (Droseraceae), Campanula americana, Lobelia appendiculata, L. spicata (Campanulaceae) and Sabatia angularis (Gentianaceae) increased 0, 103, 182, 83 and 57%, respectively. Since embryo growth did not occur in seeds of D. anglica prior to germination, embryos, although small, are fully developed; seeds have only physiological dormancy. The underdeveloped embryo in seeds of C. americana has little or no physiological dormancy; thus, seeds have morphological dormancy. On the other hand, underdeveloped embryos in seeds of L. appendiculata, L. spicata and S. angularis are physiologically dormant, and seeds have morphophysiological dormancy. Therefore, since small embryos in dwarf seeds may or may not be underdeveloped, assignment of seeds to a dormancy class requires that studies be done to determine if embryos grow inside the seed before germination can occur. Such information is important in understanding the evolutionary relationship of the different kinds of seed dormancy.

show abstract

“…The annual Lobelia gattingeri is highly variable in size and seed production, and it competes poorly with the annual grass Sporobolus vaginiflorus although the latter is more susceptible to spring drought than the Lobelia (Baskin and Baskin, 1979). The annual Lobelia gattingeri is highly variable in size and seed production, and it competes poorly with the annual grass Sporobolus vaginiflorus although the latter is more susceptible to spring drought than the Lobelia (Baskin and Baskin, 1979).…”

Section: Shallow Limestone Soils With Open Stands Of Cedar (Juniperumentioning

confidence: 99%

Analytical Biogeography

1990

View full text Add to dashboard Cite

The Ecological Life Cycle of the Cedar Glade Endemic Lobelia gattingeri

Cited by 15 publications

References 1 publication

The role of cold cues at different life stages on germination and flowering phenology

The role of cold cues at different life stages on germination and flowering phenology

Underdeveloped embryos in dwarf seeds and implications for assignment to dormancy class

Analytical Biogeography

Contact Info

Product

Resources

About