Abstract
BACKGROUND: Insect damage induces chemical changes in plants, and frequently these changes are part of a defensive response to the insect injury. Induced resistance was activated in winter wheat using a foliar application of synthetic jasmonic acid. Field trials were conducted to observe effects of jasmonic acid application on some wheat insects. Two wheat cultivars (Cubus and Tommi) were sprayed twice at growth stages (GS) 41 and 59 with two concentrations of jasmonic acid, along with control plots that were sprayed with water. RESULTS: There was a significant difference in the number of thrips and wheat blossom midges (WBM) among treatments in both cultivars. Plants in control plots had higher numbers of thrips and midges than in treated plots. There were higher numbers of thrips in the Tommi cultivar than in the Cubus cultivar, while the latter had higher numbers of WBM larvae than the Tommi cultivar. There was a positive correlation between WBM numbers and infested kernels in both cultivars. This study also indicated that jasmonic acid enhances the wheat yield in sprayed plots compared with control plots. CONCLUSIONS: The results indicate that jasmonic acid induced pest resistance in wheat plants and may act as a resistance mechanism of wheat against insect herbivores.
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Claims 7
Claim · model-written summary
Jasmonic acid treated wheat had fewer thrips than water controls.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- foliar application of synthetic jasmonic acide1
- Outcome
- number of thripse0
- Direction
- highere0
- Comparator
- control plotse0
ThripsOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant difference in the number of thrips and wheat blossom midges (WBM) among treatments in both cultivars. Plants in control plots had higher numbers of thrips and midges than in treated plots.”
e1“foliar application of synthetic jasmonic acid”
e2“control plots that were sprayed with water”
t0“winter wheat”
Claim · model-written summary
Jasmonic acid treated wheat had fewer wheat blossom midges than water controls.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- foliar application of synthetic jasmonic acide1
- Interactor
- wheat blossom midgese0pest
- Outcome
- number of thrips and wheat blossom midgese0
- Direction
- highere0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant difference in the number of thrips and wheat blossom midges (WBM) among treatments in both cultivars. Plants in control plots had higher numbers of thrips and midges than in treated plots.”
e1“foliar application of synthetic jasmonic acid”
t0“winter wheat”
Claim · model-written summary
Tommi had more thrips than Cubus.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- Tommie0
- Outcome
- numbers of thripse0
- Direction
- highere0
- Comparator
- Cubuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were higher numbers of thrips in the Tommi cultivar than in the Cubus cultivar”
t0“winter wheat”
Claim · model-written summary
Cubus had more wheat blossom midge larvae than Tommi.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- Cubuse1
- Interactor
- WBMe0pest
- Outcome
- numbers of WBM larvaee0
- Direction
- highere0
- Comparator
- Tommie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the latter had higher numbers of WBM larvae than the Tommi cultivar”
e1“the Tommi cultivar than in the Cubus cultivar”
t0“winter wheat”
Claim · model-written summary
Wheat blossom midge numbers correlated positively with infested kernels in both cultivars.
- Taxon
- winter wheatTriticum aestivumt0
- Interactor
- WBMe0pest
- Outcome
- infested kernelse0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“positive correlation between WBM numbers and infested kernels in both cultivars”
t0“winter wheat”
Claim · model-written summary
Jasmonic acid increased wheat yield compared with water control plots.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- jasmonic acide0
- Outcome
- wheat yielde0
- Direction
- enhancese0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“jasmonic acid enhances the wheat yield in sprayed plots compared with control plots”
t0“winter wheat”
Claim · model-written summary
The authors interpret jasmonic acid as inducing wheat resistance against insect herbivores.
- Taxon
- wheatTriticum aestivume0
- Treatment
- jasmonic acide0
- Interactor
- insect herbivorese0herbivore
- Outcome
- pest resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“jasmonic acid induced pest resistance in wheat plants and may act as a resistance mechanism of wheat against insect herbivores”
The same questions in other papers
jasmonic acid · yield · Triticum aestivum (wheat)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
jasmonic acid · pest · Triticum aestivum (wheat)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →application · pest · Triticum aestivum (wheat)Positive and negative results
38 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- negative
39 papers more in this group
See all 43 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.