Abstract
Abstract Allelopathy is a commonly recognized but not fully understood method that could be utilized for weed management. Controlled environment studies in a growth chamber were conducted at Virginia Tech's Glade Road Research Facility in Blacksburg, VA, to determine whether aqueous leaf or root extracts from two Lolium arundinaceum (Schreb) Darbysh (tall fescue) cultivars grown under different growing temperature conditions affected the seed germination and growth of Poa annua L. (annual bluegrass). Two cultivars (‘Falcon III’ and ‘Kentucky 31’) of L. arundinaceum were maintained at cold (day/night 4.4:–1.1°C) or warm (day/night 32.2:26.7°C) conditions for 20 d. Leaf and root extracts were collected via destructive methods and applied to P. annua seed placed in petri dishes. The results indicated that aqueous leaf extracts of L. arundinaceum could inhibit P. annua seed germination, though there was no significant germination reduction with the root extract of L. arundinaceum . The results suggest that temperature may interact with other factors, such as L. arundinaceum cultivar, to influence its allelopathic potency on P. annua seed germination. These results further demonstrate that different cultivars of L. arundinaceum might have different allelopathic effects on P. annua germination.
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Claims 4
Claim · model-written summary
Tall fescue leaf extract inhibited Poa annua seed germination.
- Treatment
- aqueous leaf extracts of L. arundinaceume0
- Interactor
- L. arundinaceum
Lolium arundinaceume0 - Outcome
- P. annua seed germinatione0
- Direction
- inhibite0
Poa annuaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“aqueous leaf extracts of L. arundinaceum could inhibit P. annua seed germination”
Claim · model-written summary
Tall fescue root extract did not significantly reduce Poa annua germination.
- Treatment
- root extract of L. arundinaceume0
- Interactor
- L. arundinaceumLolium arundinaceume0
- Outcome
- germinatione0
- Direction
- no significant germination reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant germination reduction with the root extract of L. arundinaceum”
t0“Lolium arundinaceum leaf and root developmental temperatures influence its allelopathic potency on Poa annua”
Claim · model-written summary
The authors suggest temperature may interact with cultivar to influence allelopathic potency on Poa annua germination.
- Treatment
- temperaturee0
- Interactor
- L. arundinaceumLolium arundinaceume0
- Outcome
- P. annua seed germinatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“temperature may interact with other factors, such as L. arundinaceum cultivar, to influence its allelopathic potency on P. annua seed germination”
Claim · model-written summary
The authors infer that tall fescue cultivars may differ in allelopathic effects on Poa annua germination.
- Material
- different cultivars of L. arundinaceume0
- Interactor
- L. arundinaceumLolium arundinaceume0
- Outcome
- P. annua germinatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“different cultivars of L. arundinaceum might have different allelopathic effects on P. annua germination”
The same questions in other papers
botanical · growth · Poa annuaPositive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
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See all 5 papers →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.