Abstract
The allelopathy of welsh onion root exudates collected by continuous root exudates trapping system(CRETS)was studied on cucumber seed germination and Fusarium oxysporum f. sp. cucumerinum,and the components of the root exudates were identified by gas chromatography-mass spectrometry(GS–MS). The results showed that the seed germination and sprout growth of cucumber were promoted by root exudates of welsh onion at low concentration while suppressed at high concentration,the allelopathy of‘Yuanzang’was stronger than‘Zhangqiu’. Inhibitory effects on hypha growth and spore germination of Fusarium oxysporum f. sp. cucumerinum enhanced with increasing concentration of root exudates,and‘Yuanzang’showed stronger effects than‘Zhangqiu’. Heterocyclic,ester,amide,acid,hydrocarbon,aldehyde,ketone,phenol,alcohol,ether,naphthalene compounds were detected in root exudates of Welsh onion,of which heterocyclic,ester and amide were the most compounds. Phthalate esters and benzothiazole derivatives had greater relative contents while p-cresol 2,2’-methylenebis 6-tert-butyl-,benzyl benzoate,benzoic acid p-tolyl ester,2-(methylthio)phenyl isothiocyanate had lower relative contents,which were higher in‘Yuanzang’than in‘Zhangqiu’.
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Claims 5
Claim · model-written summary
Low concentrations of Welsh onion root exudates promoted cucumber seed germination and sprout growth.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- root exudates of welsh onion at low concentratione0
- Interactor
- welsh onion
Allium fistulosume0other - Outcome
- seed germination and sprout growth of cucumbere0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seed germination and sprout growth of cucumber were promoted by root exudates of welsh onion at low concentration”
Claim · model-written summary
High concentrations of Welsh onion root exudates suppressed cucumber seed germination and sprout growth.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- root exudates of welsh onione0
- Outcome
- seed germination and sprout growth of cucumbere0
- Direction
- suppressede0
- Qualifier
- high concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seed germination and sprout growth of cucumber were promoted by root exudates of welsh onion at low concentration while suppressed at high concentration”
Claim · model-written summary
Increasing Welsh onion exudate concentration increased suppression of Fusarium hyphal growth and spore germination.
- Taxon
- Welsh OnionAllium fistulosumt0
- Treatment
- root exudatese0
- Interactor
- Fusarium oxysporum f. sp. cucumerinum
Fusarium oxysporum f. sp. cucumerinume0pathogen - Outcome
- hypha growth and spore germination of Fusarium oxysporum f. sp. cucumerinume0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibitory effects on hypha growth and spore germination of Fusarium oxysporum f. sp. cucumerinum enhanced with increasing concentration of root exudates”
t0“Welsh Onion”
Claim · model-written summary
Yuanzang exudates had stronger inhibitory effects than Zhangqiu exudates.
- Taxon
- Welsh OnionAllium fistulosumt0
- Material
- ‘Yuanzang’e0
- Outcome
- stronger effectse0
- Comparator
- ‘Zhangqiu’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Yuanzang’showed stronger effects than‘Zhangqiu’”
t0“Welsh Onion”
Claim · model-written summary
Welsh onion exudates contained several compound classes, with heterocyclic, ester and amide compounds most abundant.
- Taxon
- Welsh onionAllium fistulosume0
- Outcome
- heterocyclic,ester and amide were the most compoundse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heterocyclic,ester,amide,acid,hydrocarbon,aldehyde,ketone,phenol,alcohol,ether,naphthalene compounds were detected in root exudates of Welsh onion,of which heterocyclic,ester and amide were the most compounds”
The same questions in other papers
allelopathy · growth · Cucumis sativus (cucumber)Positive and negative results
3 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- negative
7 papers more in this group
See all 11 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.