Manipulating female flower intensity in ‘Yu Her Pau’ Litchi by delayed winter pruning

Bibliographic Details
Title: Manipulating female flower intensity in ‘Yu Her Pau’ Litchi by delayed winter pruning
Authors: J Chang, L Tang
Source: Journal of Horticultural Sciences, Vol 18, Iss 1 (2023)
Publisher Information: Society for Promotion of Horticulture - Indian Institute of Horticultural Research, 2023.
Publication Year: 2023
Collection: LCC:Plant culture
Subject Terms: Crop load, flowering, fruitlet retention, Litchi chinensis, low-temperature induction, Plant culture, SB1-1110
More Details: '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.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 0973-354X
2582-4899
Relation: https://jhs.iihr.res.in/index.php/jhs/article/view/2156; https://doaj.org/toc/0973-354X; https://doaj.org/toc/2582-4899
DOI: 10.24154/jhs.v18i1.2156
Access URL: https://doaj.org/article/fd9c7a7e3c814fc1925d36d53cfc7871
Accession Number: edsdoj.fd9c7a7e3c814fc1925d36d53cfc7871
Database: Directory of Open Access Journals
More Details
ISSN:0973354X
25824899
DOI:10.24154/jhs.v18i1.2156
Published in:Journal of Horticultural Sciences
Language:English