Abstract
Abstract The effects of water stress and temperature on seedling emergence from soil or germination in solutions were studied with Engelmann spruce and lodgepole pine. Seed emergence or germination was reduced by low water potentials both in soil and in polyethylene glycol solutions. Emergence from soil was about equal at 16° and 25°C but reduced at 35°C. The time lags before initial emergence or germination were similar for both species, and low water potentials resulted in longer time lags. However, the time required for 25 percent emergence at 16°C was about 2 days longer for pine than for spruce. These data suggested that Engelmann spruce establishment may occur more rapidly than that of lodgepole pine in cool environments. Seedling emergence was similar using 2 nursery soils which differed widely in their effects on subsequent seedling growth. Forest Sci. 23:27-33.
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Claims 8
Claim · model-written summary
Seed emergence or germination of Engelmann spruce and lodgepole pine was reduced by low water potentials in soil and in polyethylene glycol solutions.
- Taxon
- Engelmann Spruce and Lodgepole Pine
Picea engelmannii
Pinus contortat0 - Treatment
- low water potentialse0
- Outcome
- Seed emergence or germinatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed emergence or germination was reduced by low water potentials both in soil and in polyethylene glycol solutions”
t0“Engelmann Spruce and Lodgepole Pine”
Claim · model-written summary
Emergence from soil was about equal at 16 and 25 C.
- Taxon
- Engelmann Spruce and Lodgepole PinePicea engelmanniiPinus contortat0
- Treatment
- 16° and 25°Ce0
- Outcome
- Emergence from soile0
- Direction
- about equale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Emergence from soil was about equal at 16° and 25°C but reduced at 35°C”
t0“Engelmann Spruce and Lodgepole Pine”
Claim · model-written summary
Emergence from soil was reduced at 35 C relative to 16 and 25 C.
- Taxon
- Engelmann Spruce and Lodgepole PinePicea engelmanniiPinus contortat0
- Treatment
- 35°Ce0
- Outcome
- Emergence from soile0
- Direction
- reducede0
- Comparator
- 16° and 25°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Emergence from soil was about equal at 16° and 25°C but reduced at 35°C”
t0“Engelmann Spruce and Lodgepole Pine”
Claim · model-written summary
The time lags before initial emergence or germination were similar for the two species.
- Taxon
- Engelmann Spruce and Lodgepole PinePicea engelmanniiPinus contortat0
- Outcome
- time lags before initial emergence or germinatione0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The time lags before initial emergence or germination were similar for both species”
t0“Engelmann Spruce and Lodgepole Pine”
Claim · model-written summary
Low water potentials resulted in longer time lags before emergence or germination.
- Taxon
- Engelmann Spruce and Lodgepole PinePicea engelmanniiPinus contortat0
- Treatment
- low water potentialse0
- Outcome
- time lagse0
- Direction
- longere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low water potentials resulted in longer time lags”
t0“Engelmann Spruce and Lodgepole Pine”
Claim · model-written summary
At 16 C the time required for 25 percent emergence was about 2 days longer for pine than for spruce.
- Taxon
- Lodgepole PinePinus contortat0
- Outcome
- time required for 25 percent emergencee0
- Direction
- longere0
- Value
- about 2 dayse0
- Comparator
- sprucee0
- Setting
- 16°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the time required for 25 percent emergence at 16°C was about 2 days longer for pine than for spruce”
t0“Lodgepole Pine”
Claim · model-written summary
Engelmann spruce establishment may occur more rapidly than that of lodgepole pine in cool environments.
- Taxon
- Engelmann sprucePicea engelmanniie0
- Outcome
- establishmente0
- Direction
- more rapidlye0
- Comparator
- lodgepole pinee0
- Setting
- cool environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Engelmann spruce establishment may occur more rapidly than that of lodgepole pine in cool environments”
Claim · model-written summary
Seedling emergence was similar using two nursery soils that differed widely in their effects on subsequent seedling growth.
- Taxon
- Engelmann Spruce and Lodgepole PinePicea engelmanniiPinus contortat0
- Treatment
- 2 nursery soilse0
- Outcome
- Seedling emergencee0
- Direction
- similare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling emergence was similar using 2 nursery soils which differed widely in their effects on subsequent seedling growth”
t0“Engelmann Spruce and Lodgepole Pine”
The same questions in other papers
transplanting · growth · Pinus contorta (lodgepole pine)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.