Abstract
Taking the tissue-cultured seedlings of grape cultivar Red Globe as test objects, this paper examined the effects of their root aqueous extracts on seedling's growth, with the allelochemicals identified by LC-MS. The results showed that 0.02 g x ml(-1) (air-dried root mass in aqueous extracts volume; the same below), 0.1 g x ml(-1), and 0.2 g x ml(-1) of the aqueous extracts inhibited the growth of the seedlings significantly, and the inhibition effect increased with increasing concentration of the extracts. The identified allelochemicals of the extracts included p-hydroxybenzoic acid, salicylic acid, phenylpropionic acid, and coumaric acid. Pot experiment showed that different concentration (0.1, 1, and 10 mmol x L(-1)) salicylic acid and phenylpropionic acid inhibited the seedling' s growth remarkably. With the increasing concentration of the two acids, the plant height, stem diameter, shoot- and root fresh mass, leaf net photosynthetic rate and starch content, and root activity of the seedlings decreased, while the leaf soluble sugar and MDA contents increased. No obvious change pattern was observed in leaf protein content.
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Claims 8
Claim · model-written summary
Grape root aqueous extracts at three concentrations significantly inhibited Red Globe seedling growth, with stronger inhibition at higher concentrations.
- Taxon
- grapee0
- Material
- Red Globee0
- Treatment
- aqueous extractse1
- Outcome
- growth of the seedlingse1
- Direction
- inhibitede1
- Value
- 0.02 g x ml(-1)e1
Not reportedComparator
Verbatim
e0“Taking the tissue-cultured seedlings of grape cultivar Red Globe as test objects”
e1“0.02 g x ml(-1) (air-dried root mass in aqueous extracts volume; the same below), 0.1 g x ml(-1), and 0.2 g x ml(-1) of the aqueous extracts inhibited the growth of the seedlings significantly, and the inhibition effect increased with increasing concentration of the extracts”
Claim · model-written summary
The grape root extracts contained four identified allelochemicals.
Verbatim
t0“grape root aqueous extracts”
e0“The identified allelochemicals of the extracts included p-hydroxybenzoic acid, salicylic acid, phenylpropionic acid, and coumaric acid”
Claim · model-written summary
Applied salicylic acid inhibited grape seedling growth in pot experiments.
Not reportedComparator
Verbatim
t0“grape”
e0“different concentration (0.1, 1, and 10 mmol x L(-1)) salicylic acid and phenylpropionic acid inhibited the seedling' s growth remarkably”
Claim · model-written summary
Applied phenylpropionic acid inhibited grape seedling growth in pot experiments.
Not reportedComparator
Verbatim
t0“grape”
e0“different concentration (0.1, 1, and 10 mmol x L(-1)) salicylic acid and phenylpropionic acid inhibited the seedling' s growth remarkably”
Claim · model-written summary
Increasing concentrations of the two acids decreased grape seedling height, stem diameter, and shoot and root fresh mass.
Verbatim
t0“grape”
e0“With the increasing concentration of the two acids, the plant height, stem diameter, shoot- and root fresh mass, leaf net photosynthetic rate and starch content, and root activity of the seedlings decreased”
Claim · model-written summary
Increasing concentrations of the two acids decreased grape leaf photosynthetic rate and starch content and root activity.
Verbatim
t0“grape”
e0“With the increasing concentration of the two acids, the plant height, stem diameter, shoot- and root fresh mass, leaf net photosynthetic rate and starch content, and root activity of the seedlings decreased”
Claim · model-written summary
Increasing concentrations of the two acids increased grape leaf soluble sugar and MDA contents.
Verbatim
t0“grape”
e0“With the increasing concentration of the two acids, the plant height, stem diameter, shoot- and root fresh mass, leaf net photosynthetic rate and starch content, and root activity of the seedlings decreased, while the leaf soluble sugar and MDA contents increased”
Claim · model-written summary
Grape leaf protein content showed no obvious change pattern under the tested acids.
Verbatim
t0“grape”
e0“No obvious change pattern was observed in leaf protein content”
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