Effect of exogenous gibberellin application on leaf-flush growth, morphometry, and delayed phenology in post-pruning kaffir lime seedlings

IF 3.9 2区农林科学 Q1 HORTICULTURE

Scientia Horticulturae Pub Date : 2025-07-18 DOI:10.1016/j.scienta.2025.114289

Rahmat Budiarto , Siti Auliya Rahma , Syariful Mubarok , Stefina Liana Sari , Muhammad Achirul Nanda , Mansour Ghorbanpour , Mohammad Miftakhus Sholikin

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引用次数: 0

Abstract

Kaffir lime (Citrus hystrix DC.) is a valuable aromatic leaf spice used in both the culinary and pharmaceutical industries, but its pruning-harvest activity alters source-sink balance leading to leaf-flushing disturbance. Gibberellin is expected to promote faster recovery and enhance flushing in post-pruning kaffir lime, thus, present study aimed to determine optimal gibberellin concentration and its impact on leaf-flushing growth and phenology. The experiment was conducted at an open field (coordinates: -6.9316851, 107.775863, 718 m asl) in a randomized complete block design with six gibberellin concentrations, namely G0 = control (no gibberellin), G1 = 200 ppm, G2 = 400 ppm, G3 = 600 ppm, G4 = 800 ppm, and G5 = 1000 ppm. Results showed that gibberellin application via foliar feeding significantly enlarged leaf and flush performances, compared to the control. The optimal gibberellin concentration is 600 ppm, which increases leaf and flush size by 82% and 100%, respectively, although it also results in a near threefold increase in spike size. Exogenous gibberellin application also extends the flushing cycle by delaying leaf maturation, with higher concentrations prolonging developmental stages. This delay is linked to increased leaf morphometric response, potentially enhancing plant source capacity.

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施用外源赤霉素对青柠剪枝后叶片冲叶生长、形态和延迟物候的影响

卡菲尔酸橙（Citrus hystrix DC.）是一种有价值的芳香叶香料，用于烹饪和制药工业，但它的修剪-收获活动改变了源库平衡，导致叶片冲洗紊乱。赤霉素有望促进断枝后石灰的恢复和冲洗，因此，本研究旨在确定最佳赤霉素浓度及其对叶片冲洗生长和物候的影响。实验在野外（坐标：-6.9316851、107.775863、718 m asl）采用完全随机区组设计，设置6种赤霉素浓度，分别为G0 =对照（无赤霉素）、G1 = 200 ppm、G2 = 400 ppm、G3 = 600 ppm、G4 = 800 ppm、G5 = 1000 ppm。结果表明，与对照相比，叶面饲喂赤霉素显著提高了叶片和冲花性能。最佳赤霉素浓度为600 ppm，叶片和花蕊大小分别增加82%和100%，尽管它也导致穗大小增加近三倍。外源赤霉素的施用也通过延迟叶片成熟来延长冲洗周期，高浓度的赤霉素延长了发育阶段。这种延迟与叶片形态响应的增加有关，潜在地增强了植物源能力。

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来源期刊

Scientia Horticulturae 农林科学-园艺

CiteScore

8.60

自引率

4.70%

发文量

796

审稿时长

47 days

期刊介绍： Scientia Horticulturae is an international journal publishing research related to horticultural crops. Articles in the journal deal with open or protected production of vegetables, fruits, edible fungi and ornamentals under temperate, subtropical and tropical conditions. Papers in related areas (biochemistry, micropropagation, soil science, plant breeding, plant physiology, phytopathology, etc.) are considered, if they contain information of direct significance to horticulture. Papers on the technical aspects of horticulture (engineering, crop processing, storage, transport etc.) are accepted for publication only if they relate directly to the living product. In the case of plantation crops, those yielding a product that may be used fresh (e.g. tropical vegetables, citrus, bananas, and other fruits) will be considered, while those papers describing the processing of the product (e.g. rubber, tobacco, and quinine) will not. The scope of the journal includes all horticultural crops but does not include speciality crops such as, medicinal crops or forestry crops, such as bamboo. Basic molecular studies without any direct application in horticulture will not be considered for this journal.