Abstract
A wet heat shock (WHS) treatment in a water bath at 50°C for 1 hr is a powerful stimulus for grapevine budbreak. However, this treatment is not feasible as a horticultural practice in commercial vineyards. The development of an effective horticultural dormancy release practice favors a short, intense heat shock that combines convenient application and effective stimulation of budbreak. Thus, the influence of heat shock temperature and duration on dormancy release of grapevine buds was studied. Results suggested that in both WHS and dry heat shock (DHS) treatments, increased temperature can compensate for shortened shock duration. In addition, it appeared that buds better tolerate DHS than WHS. Based on these results, we analyzed the effect of short and intense heat shock on budbreak. A DHS of 10 to 30 sec at the sublethal temperature of 150°C served as a powerful stimulus of dormancy release. This short shock induced production of acetaldehyde and ethylene from the buds, as follows application of hydrogen cyanamide. This similarity suggests that analogous mechanisms are activated by the short, sublethal temperature pulse and the commercially used chemical stimulus. The efficiency of short and intense heat shock, which has not been previously documented, will aid the development of a feasible and practical treatment in commercial vineyards.
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Claims 6
Claim · model-written summary
Higher temperature compensated for shorter heat shock in grapevine bud dormancy release.
- Treatment
- increased temperaturee0
- Outcome
- dormancy releasee1
- Direction
- compensatee0
- Comparator
- shortened shock duratione0
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in both WHS and dry heat shock (DHS) treatments, increased temperature can compensate for shortened shock duration”
e1“A DHS of 10 to 30 sec at the sublethal temperature of 150°C served as a powerful stimulus of dormancy release”
t0“Grapevines”
Claim · model-written summary
Grapevine buds tolerated dry heat shock better than wet heat shock.
Verbatim
e0“buds better tolerate DHS than WHS”
Claim · model-written summary
A 10 to 30 second dry heat shock at 150°C stimulated grapevine dormancy release.
- Treatment
- A DHS of 10 to 30 sec at the sublethal temperature of 150°Ce0
- Outcome
- dormancy releasee0
- Direction
- powerfule0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A DHS of 10 to 30 sec at the sublethal temperature of 150°C served as a powerful stimulus of dormancy release”
t0“Grapevines”
Claim · model-written summary
Short heat shock induced acetaldehyde production from grapevine buds.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This short shock induced production of acetaldehyde and ethylene from the buds”
t0“Grapevines”
Claim · model-written summary
Short heat shock induced ethylene production from grapevine buds.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This short shock induced production of acetaldehyde and ethylene from the buds”
t0“Grapevines”
Claim · model-written summary
The authors suggested that short heat shock and hydrogen cyanamide activate analogous mechanisms.
- Treatment
- short, sublethal temperature pulsee0
- Outcome
- analogous mechanisms are activatede0
- Qualifier
- commercially used chemical stimuluse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This similarity suggests that analogous mechanisms are activated by the short, sublethal temperature pulse and the commercially used chemical stimulus”
t0“Grapevines”
The same questions in other papers
heat · growth · VitisPositive and negative results
7 papers in the same direction as this paper · 10 in the opposite direction
- negative
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See all 18 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.