Abstract
A study was conducted on Anacardium occidentale Linn. (Cashew) from Terengganu and Kelantan states of Malaysia, with the aim to determine the allelopathic effects of leaf and root extracts on the growth of bioassay plant species, Zea mays (maize) and Cucumis sativus (cucumber). On exposure to leaf and root aqueous extracts at 10 g/L, 50 g/L and 100 g/L concentrations, the growth of these bioassay plant species were found affected. With the increasing concentrations of leaf and root aqueous extracts, the percentage of germinations and radicle lengths of bioassay species were reduced. These findings showed that phytochemicals in the tissues of A. occidentale caused insignificant phytotoxic effects on growth of Zea mays and Cucumis sativus seeds. The leaf extract of A. occidentale showed similar phytotoxicity effects as that of its root extract, on the growth parameters of tested species. The different effects between leaf aqueous extracts and root aqueous extracts could be contributed by different allelochemical quantities or entities presence in plant tissues. This experiment showed similar trend of inhibition from both extracts, however some extracts obtained from Terengganu gave more inhibition effect compared to extracts obtained from Kelantan.
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Claims 5
Claim · model-written summary
Increasing concentrations of cashew leaf and root aqueous extracts reduced germination percentage and radicle length of maize.
- Treatment
- leaf and root aqueous extractse1
- Outcome
- percentage of germinations and radicle lengthse1
- Direction
- reducede1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zea mays (maize)”
e1“With the increasing concentrations of leaf and root aqueous extracts, the percentage of germinations and radicle lengths of bioassay species were reduced”
Claim · model-written summary
Increasing concentrations of cashew leaf and root aqueous extracts reduced germination percentage and radicle length of cucumber.
- Taxon
- Cucumis sativus
Cucumis sativuse0 - Treatment
- leaf and root aqueous extractse1
- Outcome
- percentage of germinations and radicle lengthse1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cucumis sativus (cucumber)”
e1“With the increasing concentrations of leaf and root aqueous extracts, the percentage of germinations and radicle lengths of bioassay species were reduced”
Claim · model-written summary
The cashew leaf extract showed phytotoxicity similar to that of its root extract on the growth parameters of the tested species.
Verbatim
e2“The leaf extract of A. occidentale showed similar phytotoxicity effects as that of its root extract, on the growth parameters of tested species”
Claim · model-written summary
Some extracts from Terengganu gave more inhibition than extracts from Kelantan.
- Taxon
- Anacardium occidentale
Anacardium occidentalee4 - Treatment
- extracts obtained from Terengganue3
- Outcome
- inhibition effecte3
- Direction
- moree3
- Comparator
- extracts obtained from Kelantane3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“some extracts obtained from Terengganu gave more inhibition effect compared to extracts obtained from Kelantan”
e4“Anacardium occidentale Linn.”
Claim · model-written summary
The authors suggest that differences between leaf and root extract effects could arise from different allelochemical quantities or entities in the tissues.
- Taxon
- Anacardium occidentaleAnacardium occidentalee4
- Outcome
- different effects between leaf aqueous extracts and root aqueous extractse5
- Qualifier
- different allelochemical quantities or entitiese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“different effects between leaf aqueous extracts and root aqueous extracts could be contributed by different allelochemical quantities or entities presence in plant tissues”
e4“Anacardium occidentale Linn.”
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