Abstract
The use of interspecific grapevine cultivars offers new perspectives for sustainable viticulture. Although the application of exogenous plant hormones has become widespread in recent years, data regarding the response of interspecific grapevine cultivars to treatments with biostimulants are scarce. The aim of the study was to evaluate the effect of different doses of gibberellic acid (GA3) (25, 50 and 100 mg L−1), applied by spraying the inflorescences in the late flowering phenophase, and of the complex product Cropmax® (1.0, 2.5 and 5.0 mL L−1) applied by spraying the leaves in three different phenophases, on the phenology, fertility, physiological characteristics, grape yield and quality of the interspecific table grape cultivar Moldova (Guzal kara × Seyve-Villard 12-375), growing in temperate climate conditions (N-E Romania). The application of GA3 at 50 mg L−1 increased the plant productivity (36%), promoted fruit growth and rachis elongation, improved the percentage of the marketable yield (by 5.5%), balanced the sugar/acidity ratio, but affected the synthesis of phenolic compounds. Foliar application of Cropmax® at 2.5 mL L−1 significantly improved the berry diameter, and sugar and anthocyanin accumulation, but grape acidity remained high. All treatments allowed the normal development of plant phenophases and grape maturation, but GA3 application slightly extended the number of days of the annual biological cycle of the Moldova hybrid cultivar (up to 5.5 days), probably due to a temporary variation in the physiological parameters (except for stomatal conductance), as determined in mature leaves after the application of the exogenous growth regulator.
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Claims 10
Claim · model-written summary
Application of GA3 at 50 mg L-1 increased plant productivity of the grapevine cultivar Moldova by 36%.
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of GA3 at 50 mg L−1 increased the plant productivity (36%)”
t0“interspecific grapevine cultivar”
Claim · model-written summary
GA3 at 50 mg L-1 promoted fruit growth and rachis elongation in the grapevine cultivar.
- Treatment
- application of GA3 at 50 mg L−1e0
- Outcome
- fruit growth and rachis elongatione0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of GA3 at 50 mg L−1 increased the plant productivity (36%), promoted fruit growth and rachis elongation”
t0“interspecific grapevine cultivar”
Claim · model-written summary
GA3 at 50 mg L-1 improved the percentage of marketable yield by 5.5%.
- Treatment
- application of GA3 at 50 mg L−1e0
- Outcome
- percentage of the marketable yielde0
- Direction
- improvede0
- Value
- 5.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of GA3 at 50 mg L−1 increased the plant productivity (36%), promoted fruit growth and rachis elongation, improved the percentage of the marketable yield (by 5.5%)”
t0“interspecific grapevine cultivar”
Claim · model-written summary
GA3 at 50 mg L-1 balanced the sugar/acidity ratio of the grapes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of GA3 at 50 mg L−1 increased the plant productivity (36%), promoted fruit growth and rachis elongation, improved the percentage of the marketable yield (by 5.5%), balanced the sugar/acidity ratio”
t0“interspecific grapevine cultivar”
Claim · model-written summary
GA3 at 50 mg L-1 affected the synthesis of phenolic compounds in the grapevine cultivar.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of GA3 at 50 mg L−1 increased the plant productivity (36%), promoted fruit growth and rachis elongation, improved the percentage of the marketable yield (by 5.5%), balanced the sugar/acidity ratio, but affected the synthesis of phenolic compounds”
t0“interspecific grapevine cultivar”
Claim · model-written summary
Foliar application of Cropmax at 2.5 mL L-1 significantly improved berry diameter and sugar and anthocyanin accumulation.
- Treatment
- Foliar application of Cropmax® at 2.5 mL L−1e0
- Outcome
- berry diameter, and sugar and anthocyanin accumulatione0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of Cropmax® at 2.5 mL L−1 significantly improved the berry diameter, and sugar and anthocyanin accumulation”
t0“interspecific grapevine cultivar”
Claim · model-written summary
With Cropmax at 2.5 mL L-1, grape acidity remained high.
- Treatment
- Foliar application of Cropmax® at 2.5 mL L−1e0
- Outcome
- grape aciditye0
- Direction
- remained highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of Cropmax® at 2.5 mL L−1 significantly improved the berry diameter, and sugar and anthocyanin accumulation, but grape acidity remained high”
t0“interspecific grapevine cultivar”
Claim · model-written summary
All treatments allowed normal development of plant phenophases and grape maturation.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All treatments allowed the normal development of plant phenophases and grape maturation”
t0“interspecific grapevine cultivar”
Claim · model-written summary
GA3 application slightly extended the annual biological cycle of the Moldova hybrid cultivar by up to 5.5 days.
- Material
- Moldova hybrid cultivare0
- Treatment
- GA3 applicatione0
- Outcome
- number of days of the annual biological cyclee0
- Direction
- extendede0
- Value
- up to 5.5 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA3 application slightly extended the number of days of the annual biological cycle of the Moldova hybrid cultivar (up to 5.5 days)”
t0“interspecific grapevine cultivar”
Claim · model-written summary
The authors suggest the extended cycle was probably due to a temporary variation in physiological parameters (except stomatal conductance) after GA3 application.
- Outcome
- physiological parameterse0
- Qualifier
- temporary variation in the physiological parameters (except for stomatal conductance)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“probably due to a temporary variation in the physiological parameters (except for stomatal conductance)”
t0“interspecific grapevine cultivar”
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See all 39 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.