Abstract
SummaryThis study was conducted to elucidate the allelopathic effects of a series of dilutions of Persian walnut (Juglans regia) leaf extracts [i.e., undiluted, 1:2 (v/v), 1:4 (v/v), or 1:8 (v/v) dilutions] and distilled water (control) on the characteristics of seed germination, seedling growth, and subsequent physiological changes in the basil (Ocimum basilicum L.) cultivar, ‘Genovese’. The results indicated that all aqueous leaf extracts of walnut had statistically significant inhibitory effects on the germination of basil seeds and on seedling growth characteristics. Seed germination percentages, the lengths and fresh weights (FWs) of the plumule and the radicle, the FWs and dry weights (DWs) of the shoots and roots, and leaf areas decreased significantly with increasing concentrations of aqueous walnut leaf extract. The DWs of the plumules and radicles were increased by the undiluted walnut leaf extract. Moreover, it was found that the yields of essential oils and total phenolics, and the anti-oxidant activities of basil seedlings increased with increasing concentrations of aqueous walnut leaf extract, whereas the relative water contents of basil leaves, leaf water potentials, as well as the total chlorophyll and carotenoid contents of basil leaves decreased significantly. The highest protein contents and peroxidase (POD) activities were achieved using undiluted or 1:2 (v/v) diluted aqueous walnut leaf extracts, respectively. The results of this study suggest that cultivation of the basil cultivar, ‘Genovese’ may be appropriate for walnut tree-based intercropping systems, based on the increases in anti-oxidant capacity and the accumulation of secondary metabolites.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Aqueous walnut leaf extracts significantly inhibited germination of basil seeds and seedling growth compared with distilled water.
- Taxon
- basil
Ocimum basilicume1 - Material
- ‘Genovese’e0
- Organ / stage
- seedse1
- Treatment
- aqueous leaf extracts of walnute1
- Outcome
- germination of basil seeds and on seedling growth characteristicse1
- Direction
- inhibitory effectse1
- Comparator
- distilled water (control)e2
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the basil (Ocimum basilicum L.) cultivar, ‘Genovese’”
e1“all aqueous leaf extracts of walnut had statistically significant inhibitory effects on the germination of basil seeds and on seedling growth characteristics”
e2“distilled water (control) on the characteristics of seed germination”
Claim · model-written summary
Seed germination percentage decreased significantly as walnut leaf extract concentration increased.
- Taxon
- basilOcimum basilicume0
- Treatment
- increasing concentrations of aqueous walnut leaf extracte3
- Outcome
- Seed germination percentagese3
- Direction
- decreasede3
- Qualifier
- significantlye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the basil (Ocimum basilicum L.) cultivar, ‘Genovese’”
e3“Seed germination percentages, the lengths and fresh weights (FWs) of the plumule and the radicle, the FWs and dry weights (DWs) of the shoots and roots, and leaf areas decreased significantly with increasing concentrations of aqueous walnut leaf extract”
Claim · model-written summary
Lengths and fresh weights of the plumule and radicle decreased significantly as walnut leaf extract concentration increased.
- Taxon
- basilOcimum basilicume0
- Treatment
- increasing concentrations of aqueous walnut leaf extracte3
- Outcome
- the lengths and fresh weights (FWs) of the plumule and the radiclee3
- Direction
- decreasede3
- Qualifier
- significantlye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the basil (Ocimum basilicum L.) cultivar, ‘Genovese’”
e3“Seed germination percentages, the lengths and fresh weights (FWs) of the plumule and the radicle, the FWs and dry weights (DWs) of the shoots and roots, and leaf areas decreased significantly with increasing concentrations of aqueous walnut leaf extract”
Claim · model-written summary
Shoot and root fresh and dry weights and leaf area decreased significantly as walnut leaf extract concentration increased.
- Taxon
- basilOcimum basilicume0
- Treatment
- increasing concentrations of aqueous walnut leaf extracte3
- Outcome
- the FWs and dry weights (DWs) of the shoots and roots, and leaf arease3
- Direction
- decreasede3
- Qualifier
- significantlye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the basil (Ocimum basilicum L.) cultivar, ‘Genovese’”
e3“Seed germination percentages, the lengths and fresh weights (FWs) of the plumule and the radicle, the FWs and dry weights (DWs) of the shoots and roots, and leaf areas decreased significantly with increasing concentrations of aqueous walnut leaf extract”
Claim · model-written summary
Undiluted walnut leaf extract increased the dry weights of basil plumules and radicles.
- Taxon
- basilOcimum basilicume0
- Organ / stage
- plumules and radiclese4
- Treatment
- undiluted walnut leaf extracte4
- Outcome
- The DWs of the plumules and radiclese4
- Direction
- increasede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the basil (Ocimum basilicum L.) cultivar, ‘Genovese’”
e4“The DWs of the plumules and radicles were increased by the undiluted walnut leaf extract”
Claim · model-written summary
Essential oil yield, total phenolics and antioxidant activity of basil seedlings increased with increasing walnut leaf extract concentration.
- Taxon
- basilOcimum basilicume5
- Organ / stage
- seedlingse5
- Treatment
- increasing concentrations of aqueous walnut leaf extracte5
- Outcome
- yields of essential oils and total phenolics, and the anti-oxidant activitiese5
- Direction
- increasede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the basil (Ocimum basilicum L.) cultivar, ‘Genovese’”
e5“the yields of essential oils and total phenolics, and the anti-oxidant activities of basil seedlings increased with increasing concentrations of aqueous walnut leaf extract”
Claim · model-written summary
Relative water content and leaf water potential of basil leaves decreased significantly.
- Taxon
- basilOcimum basilicume6
- Organ / stage
- leavese6
- Outcome
- relative water contents of basil leaves, leaf water potentialse6
- Direction
- decreasede6
- Qualifier
- significantlye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“the relative water contents of basil leaves, leaf water potentials, as well as the total chlorophyll and carotenoid contents of basil leaves decreased significantly”
Claim · model-written summary
Total chlorophyll and carotenoid contents of basil leaves decreased significantly.
- Taxon
- basilOcimum basilicume6
- Organ / stage
- leavese6
- Outcome
- total chlorophyll and carotenoid contentse6
- Direction
- decreasede6
- Qualifier
- significantlye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“the relative water contents of basil leaves, leaf water potentials, as well as the total chlorophyll and carotenoid contents of basil leaves decreased significantly”
Claim · model-written summary
Undiluted or 1:2 diluted walnut leaf extract gave the highest basil protein contents.
- Taxon
- basilOcimum basilicume0
- Treatment
- undiluted or 1:2 (v/v) diluted aqueous walnut leaf extractse7
- Outcome
- protein contentse7
- Direction
- higheste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the basil (Ocimum basilicum L.) cultivar, ‘Genovese’”
e7“The highest protein contents and peroxidase (POD) activities were achieved using undiluted or 1:2 (v/v) diluted aqueous walnut leaf extracts, respectively”
Claim · model-written summary
The 1:2 diluted walnut leaf extract gave the highest basil peroxidase (POD) activity.
- Taxon
- basilOcimum basilicume0
- Treatment
- 1:2 (v/v) diluted aqueous walnut leaf extractse7
- Outcome
- peroxidase (POD) activitiese7
- Direction
- higheste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the basil (Ocimum basilicum L.) cultivar, ‘Genovese’”
e7“The highest protein contents and peroxidase (POD) activities were achieved using undiluted or 1:2 (v/v) diluted aqueous walnut leaf extracts, respectively”
Claim · model-written summary
Basil cultivar Genovese may be appropriate for walnut tree-based intercropping systems.
- Taxon
- basilOcimum basilicume7
- Material
- ‘Genovese’e7
- Outcome
- walnut tree-based intercropping systemse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The results of this study suggest that cultivation of the basil cultivar, ‘Genovese’ may be appropriate for walnut tree-based intercropping systems, based on the increases in anti-oxidant capacity and the accumulation of secondary metabolites”
The same questions in other papers
botanical · growth · Ocimum basilicum (basil)Positive and negative results
5 papers in the same direction as this paper · 13 in the opposite direction
- positive
- positive
- positive
15 papers more in this group
See all 19 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.