Abstract
Invasive plants may present allelopathic substances that interfere with the germination and initial development of seedlings of various species. The objective of this study is to evaluate the physiological quality of cabbage and tomato seeds in the presence of different concentrations of purple nutsedge extract. The seeds were left to germinate in different substrates. Individual experiments were performed for both species. Five concentrations (0, 25, 50, 75 and 100%) of aqueous extract obtained from tubers of Cyperus rotundus were used. The seeds of each species were placed to germinate in three types of substrates (sand, commercial, and paper). Germination, normal seedlings, abnormal seedlings, non-germinated seeds, germination speed index, and accelerated aging were evaluated. A completely randomized experiment with a 3 × 5 factorial design (three substrates and five concentrations of purple nutsedge extract) was conducted with four replications. For the substrates, the means were compared by Tukey test at 5% probability. Polynomial regression analyses were carried out for concentrations of purple nutsedge extract. Cyperus rotundus exerts allelopathic effects on the germination of tomato and cabbage seeds. As the concentration of the tuber extract increases, the inhibitory effect increases, thus reducing germination and seed vigor in the different substrates. The commercial substrate for tomato and the paper substrate for cabbage may minimize the allelopathic effects of Cyperus rotundus extract during germination of seeds.
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Claims 6
Claim · model-written summary
Cyperus rotundus extract inhibited tomato seed germination.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Cyperus rotunduse0
- Interactor
- Cyperus rotundus
Cyperus rotunduse0weed - Outcome
- germinatione1
- Direction
- reducinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cyperus rotundus exerts allelopathic effects on the germination of tomato and cabbage seeds”
e1“the inhibitory effect increases, thus reducing germination and seed vigor in the different substrates”
Claim · model-written summary
Cyperus rotundus extract inhibited cabbage seed germination.
- Taxon
- cabbage
Brassica oleracea var. capitatae0 - Treatment
- Cyperus rotunduse0
- Interactor
- Cyperus rotundusCyperus rotunduse0weed
- Outcome
- germinatione1
- Direction
- reducinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cyperus rotundus exerts allelopathic effects on the germination of tomato and cabbage seeds”
e1“the inhibitory effect increases, thus reducing germination and seed vigor in the different substrates”
Claim · model-written summary
Higher tuber extract concentration increased inhibition of tomato seed vigor.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- concentration of the tuber extracte1
- Interactor
- Cyperus rotundusCyperus rotunduse2weed
- Outcome
- seed vigore1
- Direction
- reducinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tomato and cabbage seeds”
e1“As the concentration of the tuber extract increases, the inhibitory effect increases, thus reducing germination and seed vigor in the different substrates”
e2“tubers of Cyperus rotundus”
Claim · model-written summary
Higher tuber extract concentration increased inhibition of cabbage seed vigor.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- concentration of the tuber extracte1
- Interactor
- Cyperus rotundusCyperus rotunduse2weed
- Outcome
- seed vigore1
- Direction
- reducinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tomato and cabbage seeds”
e1“As the concentration of the tuber extract increases, the inhibitory effect increases, thus reducing germination and seed vigor in the different substrates”
e2“tubers of Cyperus rotundus”
Claim · model-written summary
Commercial substrate may minimize nutsedge allelopathy in tomato seed germination.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- commercial substratee0
- Interactor
- Cyperus rotundusCyperus rotunduse0weed
- Outcome
- allelopathic effectse0
- Direction
- minimizee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The commercial substrate for tomato and the paper substrate for cabbage may minimize the allelopathic effects of Cyperus rotundus extract during germination of seeds”
Claim · model-written summary
Paper substrate may minimize nutsedge allelopathy in cabbage seed germination.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- paper substratee0
- Interactor
- Cyperus rotundusCyperus rotunduse0weed
- Outcome
- allelopathic effectse0
- Direction
- minimizee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The commercial substrate for tomato and the paper substrate for cabbage may minimize the allelopathic effects of Cyperus rotundus extract during germination of seeds”
The same questions in other papers
Cyperus rotundus · growth · Solanum lycopersicum (tomato)Positive and negative results
1 in the opposite direction
- positive
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.