Abstract
The deterrent effects of a lipid extract from seedling Sorghum bicolor on Locusta migratoria migratoroides (R. & F.) reside in several of the surface wax components of the extracts. ρ‐Hydroxybenzaldehyde has been identified as an antifeedant present in the surface wax of all cultivars examined. Its concentration in the wax varies considerably with cultivar and in some (e.g. 6SD and CSH 1) it is present at concentrations which are highly deterrent to Locusta . In all cultivars its concentration decreases with increasing plant age and palatability, and it is only present in deterrent amounts in the early stages of growth. Sorghum seedlings appear to possess particularly thick or resistant cuticular waxes as compared to other Gramineae, and the chemical composition of the waxes of all the cultivars examined appeared to be qualitatively similar. RÉSUMÉ Le ρ‐hydroxybenzaldehyde dans la cire superficielle du sorgho: son importance dans la resistance des semis aux acridiens Les effets préventifs d'un extrait de lipide des plants de Sorghum bicolor sur Locusta migratoria se retrouvent chez plusieurs des composants de la cire superficielle de ces extraits. Le ρ‐hydroxybenzaldehyde a été identifié comme agent antialimentaire puissant dans la cire superficielle de toutes les cultures examinees. Sa concentration dans la cire varie considérablement selon la culture et elle se trouve dans certains cas (e.g. 65D et CSH 1) à des concentrations fortement preventives contre Locusta . Dans toutes les cultures, la concentration diminue avec l'âge des plants dont le goût devient progressivement plus agréable; ainsi elle n'est préventive que pendant les premières phases de la croissance. Les plants de sorgho semblent posséder des cires cuticulaires particulièrement épaisses ou résistantes par comparaison avec les autres graminées et la composition chimique des cires de toutes les cultures examinées paraît semblable qualitativement.
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 6
Claim · model-written summary
ρ‐Hydroxybenzaldehyde is present in the surface wax of all sorghum cultivars examined and acts as an antifeedant against Locusta.
- Taxon
- Sorghum bicolor
Sorghum bicolore0 - Interactor
- Locusta migratoria migratoroides
Locusta migratoriae0herbivore - Compound
- ρ‐Hydroxybenzaldehydee1
- Outcome
- antifeedante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The deterrent effects of a lipid extract from seedling Sorghum bicolor on Locusta migratoria migratoroides (R. & F.) reside in several of the surface wax components of the extracts”
e1“ρ‐Hydroxybenzaldehyde has been identified as an antifeedant present in the surface wax of all cultivars examined”
Claim · model-written summary
The concentration of ρ‐Hydroxybenzaldehyde in the sorghum wax varies with cultivar, and in some cultivars is highly deterrent to Locusta.
- Taxon
- Sorghum bicolorSorghum bicolore0
- Material
- 6SD and CSH 1e2
- Outcome
- concentration in the waxe2
- Qualifier
- varies considerably with cultivare2
LocustaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Its concentration in the wax varies considerably with cultivar and in some (e.g. 6SD and CSH 1) it is present at concentrations which are highly deterrent to Locusta”
e0“The deterrent effects of a lipid extract from seedling Sorghum bicolor on Locusta migratoria migratoroides (R. & F.) reside in several of the surface wax components of the extracts”
Claim · model-written summary
The concentration of ρ‐Hydroxybenzaldehyde in sorghum wax decreases with increasing plant age.
- Taxon
- Sorghum bicolorSorghum bicolore0
- Treatment
- increasing plant agee3
- Outcome
- concentratione3
- Direction
- decreasese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In all cultivars its concentration decreases with increasing plant age and palatability, and it is only present in deterrent amounts in the early stages of growth”
e0“The deterrent effects of a lipid extract from seedling Sorghum bicolor on Locusta migratoria migratoroides (R. & F.) reside in several of the surface wax components of the extracts”
Claim · model-written summary
Sorghum seedlings contain deterrent amounts of the wax antifeedant only in the early stages of growth.
- Taxon
- Sorghum bicolorSorghum bicolore0
- Organ / stage
- early stages of growthe3
- Outcome
- deterrent amountse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In all cultivars its concentration decreases with increasing plant age and palatability, and it is only present in deterrent amounts in the early stages of growth”
e0“The deterrent effects of a lipid extract from seedling Sorghum bicolor on Locusta migratoria migratoroides (R. & F.) reside in several of the surface wax components of the extracts”
Claim · model-written summary
Sorghum seedlings appear to have thicker or more resistant cuticular waxes than other Gramineae.
- Taxon
- Sorghum seedlingsSorghum bicolore4
- Outcome
- cuticular waxese4
- Qualifier
- thick or resistante4
- Comparator
- other Gramineaee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Sorghum seedlings appear to possess particularly thick or resistant cuticular waxes as compared to other Gramineae”
Claim · model-written summary
The chemical composition of the surface waxes of the sorghum cultivars examined is qualitatively similar.
- Taxon
- Sorghum bicolorSorghum bicolore0
- Outcome
- the chemical composition of the waxese5
- Qualifier
- qualitatively similare5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the chemical composition of the waxes of all the cultivars examined appeared to be qualitatively similar”
e0“The deterrent effects of a lipid extract from seedling Sorghum bicolor on Locusta migratoria migratoroides (R. & F.) reside in several of the surface wax components of the extracts”