Abstract
The blossom-end scarring of tomato fruit caused by exposure of the plant to cool weather during ovary formation, commonly termed catfacing, can also be induced by GA 3 foliar sprays. To determine if GA 3 treatment could serve as a cultivar screening tool to identify lines susceptible to the disorder, we compared the catfacing incidence in 14 fresh-market tomato cultivars after GAS sprays and in nontreated controls in two field experiments. In 1 year, removal of the plant's apex was also imposed. GA 3 sprays (22 μ m twice, applied 1 week apart to tomato seedlings ≈5 weeks old) increased catfacing incidence in both years and accentuated cultivar differences in the disorder. Topping did not increase catfacing significantly. The cultivars Valerie, Sunrise, and Basketvee were least affected by catfacing in the experiments, while `Starfire', `New Yorker', and `Olympic' had the highest percentage of catfaced fruit. The GA 3 screening method shows promise for identifying cultivar differences in susceptibility to blossom-end scarring. Chemical name used: gibberellic acid (GA 3 ).
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Claims 6
Claim · model-written summary
GA 3 sprays increased tomato catfacing incidence in both years.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- GA 3 sprays (22 μ m twice, applied 1 week apart to tomato seedlings ≈5 weeks old)e0
- Outcome
- catfacing incidencee0
- Direction
- increasede0
- Comparator
- nontreated controlse1
- Setting
- field experimentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA 3 sprays (22 μ m twice, applied 1 week apart to tomato seedlings ≈5 weeks old) increased catfacing incidence in both years”
e1“in nontreated controls in two field experiments”
Claim · model-written summary
GA 3 sprays accentuated cultivar differences in catfacing.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- GA 3 sprayse0
- Outcome
- cultivar differences in the disordere0
- Direction
- accentuatede0
- Comparator
- nontreated controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA 3 sprays (22 μ m twice, applied 1 week apart to tomato seedlings ≈5 weeks old) increased catfacing incidence in both years and accentuated cultivar differences in the disorder.”
e1“in nontreated controls in two field experiments”
Claim · model-written summary
Topping did not significantly increase catfacing.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- Toppinge0
- Outcome
- catfacinge0
- Direction
- did not increasee0
- Comparator
- nontreated controlse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Topping did not increase catfacing significantly.”
e1“tomato seedlings”
e2“in nontreated controls”
Claim · model-written summary
Valerie, Sunrise and Basketvee were least affected by catfacing.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- Valerie, Sunrise, and Basketveee0
- Outcome
- catfacinge0
- Direction
- least affectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivars Valerie, Sunrise, and Basketvee were least affected by catfacing in the experiments”
e1“tomato cultivars”
Claim · model-written summary
Starfire, New Yorker and Olympic had the highest percentage of catfaced fruit.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- `Starfire', `New Yorker', and `Olympic'e0
- Outcome
- percentage of catfaced fruite0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Starfire', `New Yorker', and `Olympic' had the highest percentage of catfaced fruit”
e1“tomato cultivars”
Claim · model-written summary
The GA 3 screening method shows promise for identifying cultivar susceptibility differences.
- Outcome
- identifying cultivar differences in susceptibility to blossom-end scarringe0
Not reportedComparatorValue
Verbatim
e0“The GA 3 screening method shows promise for identifying cultivar differences in susceptibility to blossom-end scarring.”
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