Abstract
Experiments were conducted to determine the influences of temperature, light, winter storage, and water stress on seed germination of fringed sage. Seeds collected in 3 yr in central Saskatchewan were placed in sealed vials and buried in the soil after harvest, and germination was tested in spring and early summer. Seeds germinated over a wide range of temperatures with alternating 25/15 C being optimal. The range of optimal temperatures was higher for older seeds than younger seeds. The stimulating effect of light on germination varied among collections and incubating temperatures. Total germination and germination rate was limited by water stress and no seeds germinated at osmotic potentials below −0.9 MPa. Seeds hydrated in the autumn and exposed to low winter temperatures had higher germination the following spring than dry seeds exposed to the same conditions. Results suggest that sufficient soil moisture combined with moderate seedbed temperatures are optimal for fringed sage germination. Periodicity of germination may be influenced by variable germination requirements in different aging seeds.
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Claims 8
Claim · model-written summary
Fringed sage seeds germinated over a wide range of temperatures, with alternating 25/15 C being optimal.
Verbatim
e0“seed germination of fringed sage”
e1“Seeds germinated over a wide range of temperatures with alternating 25/15 C being optimal”
Claim · model-written summary
The range of optimal germination temperatures was higher for older seeds than for younger seeds.
Verbatim
e0“seed germination of fringed sage”
e2“The range of optimal temperatures was higher for older seeds than younger seeds”
Claim · model-written summary
The stimulating effect of light on germination varied among collections and incubating temperatures.
Verbatim
e0“seed germination of fringed sage”
e3“The stimulating effect of light on germination varied among collections and incubating temperatures”
Claim · model-written summary
Total germination and germination rate of fringed sage were limited by water stress.
Verbatim
e0“seed germination of fringed sage”
e4“Total germination and germination rate was limited by water stress”
Claim · model-written summary
No fringed sage seeds germinated at osmotic potentials below -0.9 MPa.
Verbatim
e0“seed germination of fringed sage”
e5“no seeds germinated at osmotic potentials below −0.9 MPa”
Claim · model-written summary
Seeds hydrated in autumn and exposed to low winter temperatures had higher spring germination than dry seeds exposed to the same conditions.
Verbatim
e0“seed germination of fringed sage”
e6“Seeds hydrated in the autumn and exposed to low winter temperatures had higher germination the following spring than dry seeds exposed to the same conditions”
Claim · model-written summary
Sufficient soil moisture combined with moderate seedbed temperatures is optimal for fringed sage germination.
Verbatim
e0“seed germination of fringed sage”
e7“Results suggest that sufficient soil moisture combined with moderate seedbed temperatures are optimal for fringed sage germination”
Claim · model-written summary
Periodicity of fringed sage germination may be influenced by variable germination requirements of differently aged seeds.
Verbatim
e0“seed germination of fringed sage”
e1“Periodicity of germination may be influenced by variable germination requirements in different aging seeds”