Abstract
Cultivars of bell pepper differ in susceptibility to bud/flower abscission. Reduction in the level of assimilate, and alterations in assimilate partitioning may be involved in the processes leading to bud/flower abscission. Four growth analysis experiments were conducted to determine whether two pepper cultivars differing in susceptibility to stress-induced abscission showed corresponding differences in growth and rates and dry matter partitioning when subjected to shade stress. The reduction in RGR and NAR with shading was significantly greater for the abscission-susceptible `Shamrock' than the more tolerant `Ace'. Partitioning of dry matter to reproductive structures was reduced by shading. There were no cultivar differences in the proportion of dry matter partitioned to young developing leaves. Fully expanded leaves comprised a larger proportion of total dry matter in `Shamrock'. The lower NAR of `Shamrock' under stress may have led to greater bud/flower abscission than `Ace' under shade stress. If preferential partitioning of dry matter to competing structures (developing leaves) is also involved, it was not detected using this technique.
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Claims 7
Claim · model-written summary
Shade reduced RGR more in Shamrock than Ace.
Verbatim
e0“The reduction in RGR and NAR with shading was significantly greater for the abscission-susceptible `Shamrock' than the more tolerant `Ace'.”
t0“BELL PEPPER”
Claim · model-written summary
Shade reduced NAR more in Shamrock than Ace.
Verbatim
e0“The reduction in RGR and NAR with shading was significantly greater for the abscission-susceptible `Shamrock' than the more tolerant `Ace'.”
t0“BELL PEPPER”
Claim · model-written summary
Shading reduced dry matter partitioning to reproductive structures.
- Taxon
- bell peppert0
- Organ / stage
- reproductive structurese0
- Treatment
- shadinge0
- Outcome
- Partitioning of dry matter to reproductive structurese0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Partitioning of dry matter to reproductive structures was reduced by shading.”
t0“BELL PEPPER”
Claim · model-written summary
Cultivars did not differ in the fraction of dry matter partitioned to young developing leaves.
Verbatim
e0“There were no cultivar differences in the proportion of dry matter partitioned to young developing leaves.”
t0“BELL PEPPER”
Claim · model-written summary
Fully expanded leaves comprised a larger dry matter fraction in Shamrock.
Verbatim
e0“Fully expanded leaves comprised a larger proportion of total dry matter in `Shamrock'.”
t0“BELL PEPPER”
Claim · model-written summary
Lower NAR under stress may explain greater bud and flower abscission in Shamrock than Ace.
Verbatim
e0“The lower NAR of `Shamrock' under stress may have led to greater bud/flower abscission than `Ace' under shade stress.”
t0“BELL PEPPER”
Claim · model-written summary
The growth-analysis technique did not detect preferential dry matter partitioning to developing leaves.
- Taxon
- bell peppert0
- Outcome
- preferential partitioning of dry matter to competing structurese0
- Direction
- not detectede0
- Qualifier
- using this techniquee0
Not reportedComparatorValue
Verbatim
e0“If preferential partitioning of dry matter to competing structures (developing leaves) is also involved, it was not detected using this technique.”
t0“BELL PEPPER”
The same questions in other papers
shade · growth · Capsicum annuum (sweet pepper)Positive and negative results
1 paper in the same direction as this paper · 13 in the opposite direction
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See all 15 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.