Abstract
'Yu Her Pau’ litchi (Litchi chinensis) has excellent fruit quality. However, its production on Taiwan is limited by low productivity despite being regarded as a high-quality fruit. It is known that litchi’s leaves play a critical role in floral induction under low temperature. Thus, we hypothesized that the flower intensity in spring could be manipulated by altering the leaf quality in winter, thereby increasing crop load. In this pilot study, ‘Yu Her Pau’ trees were pruned in mid-December [early pruning (EP)], one of the common cultural practices carried out by growers in the region, as control or mid-January [late pruning (LP)]. This resulted in 50% and 100% canopy foliage for EP and LP trees, respectively, between mid-December and mid-January. At the peak blooming time in March, LP trees produced significantly more female flowers than EP trees (95.8 and 56.1/panicle, respectively) with no negative effects on initial fruit set number, fruitlet abscission, or fruit quality at harvest. Our results suggest additional mature leaves present on trees in mid-December onward may benefit litchi flower formation without affecting fruit retention. Thus, preserving leaves with delayed pruning might potentially mitigate the negative impacts of warmer winters due to climate change on litchi flowering.
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Claims 6
Claim · model-written summary
Late pruning left 100% canopy foliage versus 50% under early pruning between mid-December and mid-January.
LitchiNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This resulted in 50% and 100% canopy foliage for EP and LP trees, respectively, between mid-December and mid-January”
e1“'Yu Her Pau’ litchi (Litchi chinensis)”
Claim · model-written summary
Late-pruned trees produced significantly more female flowers than early-pruned trees, 95.8 versus 56.1 per panicle.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LP trees produced significantly more female flowers than EP trees (95.8 and 56.1/panicle, respectively)”
e1“'Yu Her Pau’ litchi (Litchi chinensis)”
Claim · model-written summary
Late pruning had no negative effect on initial fruit set number.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with no negative effects on initial fruit set number, fruitlet abscission, or fruit quality at harvest”
e1“At the peak blooming time in March, LP trees”
e2“EP trees”
e3“'Yu Her Pau’ litchi (Litchi chinensis)”
Claim · model-written summary
Late pruning had no negative effect on fruitlet abscission.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with no negative effects on initial fruit set number, fruitlet abscission, or fruit quality at harvest”
e1“At the peak blooming time in March, LP trees”
e2“EP trees”
e3“'Yu Her Pau’ litchi (Litchi chinensis)”
Claim · model-written summary
Late pruning had no negative effect on fruit quality at harvest.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with no negative effects on initial fruit set number, fruitlet abscission, or fruit quality at harvest”
e1“At the peak blooming time in March, LP trees”
e2“EP trees”
e3“'Yu Her Pau’ litchi (Litchi chinensis)”
Claim · model-written summary
The authors suggest preserving leaves with delayed pruning might mitigate warmer-winter effects on litchi flowering.
- Outcome
- preserving leaves with delayed pruninge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“preserving leaves with delayed pruning might potentially mitigate the negative impacts of warmer winters due to climate change on litchi flowering”
The same questions in other papers
pruning · yield · LitchiPositive and negative results
3 papers in the same direction as this paper · 10 reporting no difference from an alternative
- negative
- positive
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See all 14 papers →pruning · quality: grain · LitchiResults agree
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- no effect
pruning · growth · LitchiResults agree
3 papers in the same direction as this paper
- positive
- positive
- positive
pruning · phenology · LitchiResults agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.