Abstract
The roles of plant hormones in the early growth of pepper fruit (Capsicum annuum L.) were investigated. An exogenous hormone treatment study indicated that cytokinin (CK) was more effective at stimulating early fruit growth in two lines than auxin or gibberellin (GA). Endogenous levels of CKs, 3-indole-acetic acid (IAA), and GAs in young pollinated and unpollinated fruit of four lines (two with medium-sized and two with small fruit) were also investigated. In pollinated fruit, the level of trans-zeatin riboside (tZR) increased with fruit size. In unpollinated fruit, tZR did not increase in any lines. IAA levels decreased gradually after flowering and did not differ between pollinated and unpollinated fruit in any lines. Levels of GA1 in unpollinated fruit of the lines in which unpollinated fruit were relatively well enlarged were slightly higher. In the line in which unpollinated fruit could not enlarge, GA1 levels of all samples were lower than the others. These results indicate that tZR is important in the early enlargement of pollinated pepper fruit, and that GA1 is involved in early fruit enlargement, especially in unpollinated pepper.
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Claims 7
Claim · model-written summary
Cytokinin was more effective than auxin or gibberellin at stimulating early fruit growth in pepper.
- Taxon
- Capsicum annuum
Capsicum annuumt0 - Treatment
- cytokinin (CK)e1
- Outcome
- early fruit growthe1
- Direction
- more effective at stimulatinge1
- Comparator
- auxin or gibberellin (GA)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“An exogenous hormone treatment study indicated that cytokinin (CK) was more effective at stimulating early fruit growth in two lines than auxin or gibberellin (GA)”
Claim · model-written summary
The level of trans-zeatin riboside increased with fruit size in pollinated pepper fruit.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Organ / stage
- pollinated fruite2
- Outcome
- level of trans-zeatin riboside (tZR)e2
- Direction
- increasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e2“In pollinated fruit, the level of trans-zeatin riboside (tZR) increased with fruit size”
Claim · model-written summary
The trans-zeatin riboside level did not increase in unpollinated pepper fruit in any line.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Organ / stage
- unpollinated fruite3
- Outcome
- tZRe3
- Direction
- did not increasee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e3“In unpollinated fruit, tZR did not increase in any lines”
Claim · model-written summary
IAA levels decreased gradually after flowering in pepper fruit.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Organ / stage
- after floweringe4
- Outcome
- IAA levelse4
- Direction
- decreasede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e4“IAA levels decreased gradually after flowering and did not differ between pollinated and unpollinated fruit in any lines”
Claim · model-written summary
IAA levels did not differ between pollinated and unpollinated pepper fruit.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Outcome
- IAA levelse4
- Direction
- did not differe4
- Comparator
- unpollinated fruite4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e4“IAA levels decreased gradually after flowering and did not differ between pollinated and unpollinated fruit in any lines”
Claim · model-written summary
GA1 levels in unpollinated fruit were slightly higher in lines where unpollinated fruit enlarged relatively well.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Organ / stage
- unpollinated fruite6
- Outcome
- Levels of GA1e6
- Direction
- slightly highere6
- Qualifier
- in which unpollinated fruit were relatively well enlargede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e6“Levels of GA1 in unpollinated fruit of the lines in which unpollinated fruit were relatively well enlarged were slightly higher”
Claim · model-written summary
GA1 levels were lower in the pepper line in which unpollinated fruit could not enlarge than in the other lines.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Organ / stage
- unpollinated fruite7
- Outcome
- GA1 levelse7
- Direction
- lowere7
- Qualifier
- In the line in which unpollinated fruit could not enlargee7
- Comparator
- the otherse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e7“In the line in which unpollinated fruit could not enlarge, GA1 levels of all samples were lower than the others”
The same questions in other papers
class · growth · Capsicum annuum (sweet pepper)Positive and negative results
10 papers in the same direction as this paper · 2 in the opposite direction
- negative
- positive
- no effect
9 papers more in this group
See all 13 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.