Abstract
The color of grapevine berries is one of the most important quality parameters that define the appearance, attracts the consumer, and determines the price, especially in red grape cultivars. Some grape varieties show less color development due to many factors such as temperature, light intensity, and agricultural management. The present study aimed to evaluate diverse phytohormones coupled with grafting on quality and fruit coloration of ’Crimson Seedless‘ grapes. Pre-harvest foliar treatments of abscisic acid (ABA) at 400 mg L−1, methyl jasmonate (MeJ) at 1 mM L−1, ethephon (Eth) at 480 mg L−1, and melatonin (Mel) at 100 μmol were applied after 7 days and repeated after 21 days of ‘Veraison’ (beginning of the coloring phase). The results exposed that the ABA application provided the best anthocyanin accumulation with grafted grapevines whereas Eth displayed the maximum anthocyanin accumulation with ungrafted grapevines. Moreover, the expression of anthocyanin biosynthesis genes (chalcone synthase (CHS), flavanone 3-hydroxylase (F3H), and flavanol 3-O-glucosyl transferase (UFGT)) was consistent with the anthocyanin concentration in berry peel. Moreover, Eth treatment revealed the highest total phenols and antioxidant capacity for both grafted and ungrafted grapevines. MeJ phytohormone exhibited the largest total yield, whereas the treatment of Eth increased the weight of 50 berries and the bunch. Furthermore, ABA induced the uppermost firmness and removal force. Regarding the chemical attributes, the Mel treatment revealed the minimum value of titratable acidity (TA) and the highest polyphenol oxidase (PPO) activity, while the MeJ treatment recorded the superior soluble solids content (SSC), in addition to phenylalanine ammonia-lyase (PAL) and catalase (CAT) enzymes activities. Eth treatment produced the highest activity of the peroxidase (POD) enzyme. Finally, the grafting treatment improved most of the studied fruit attributes.
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Claims 13
Claim · model-written summary
ABA gave the greatest anthocyanin accumulation in grafted grapevines.
- Treatment
- ABA applicatione0
- Outcome
- anthocyanin accumulatione0
- Direction
- beste0
- Qualifier
- grafted grapevinese0
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ABA application provided the best anthocyanin accumulation with grafted grapevines”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Ethephon gave maximum anthocyanin accumulation in ungrafted grapevines.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eth displayed the maximum anthocyanin accumulation with ungrafted grapevines”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Expression of the three anthocyanin biosynthesis genes matched berry peel anthocyanin concentration.
- Organ / stage
- berry peele0
- Gene
- chalcone synthase (CHS), flavanone 3-hydroxylase (F3H), and flavanol 3-O-glucosyl transferase (UFGT)e0
- Outcome
- expression of anthocyanin biosynthesis genese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the expression of anthocyanin biosynthesis genes (chalcone synthase (CHS), flavanone 3-hydroxylase (F3H), and flavanol 3-O-glucosyl transferase (UFGT)) was consistent with the anthocyanin concentration in berry peel.”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Ethephon yielded the highest total phenols and antioxidant capacity in grafted and ungrafted grapevines.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eth treatment revealed the highest total phenols and antioxidant capacity for both grafted and ungrafted grapevines.”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Methyl jasmonate produced the largest total yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJ phytohormone exhibited the largest total yield”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Ethephon increased weight of 50 berries and bunch weight.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment of Eth increased the weight of 50 berries and the bunch.”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
ABA produced the greatest berry firmness and removal force.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA induced the uppermost firmness and removal force.”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Melatonin gave the minimum titratable acidity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Mel treatment revealed the minimum value of titratable acidity (TA)”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Melatonin produced the highest polyphenol oxidase activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Mel treatment revealed the minimum value of titratable acidity (TA) and the highest polyphenol oxidase (PPO) activity”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Methyl jasmonate gave the greatest soluble solids content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the MeJ treatment recorded the superior soluble solids content (SSC)”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Methyl jasmonate gave the greatest PAL and CAT enzyme activities.
- Treatment
- MeJ treatmente0
- Outcome
- phenylalanine ammonia-lyase (PAL) and catalase (CAT) enzymes activitiese0
- Direction
- superiore0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the MeJ treatment recorded the superior soluble solids content (SSC), in addition to phenylalanine ammonia-lyase (PAL) and catalase (CAT) enzymes activities.”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Ethephon produced the highest peroxidase activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eth treatment produced the highest activity of the peroxidase (POD) enzyme.”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Grafting improved most studied fruit attributes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the grafting treatment improved most of the studied fruit attributes.”
t0“Grapevine (Vitis vinifera L.)”
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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.