Bolting garlic quality and morphological traits are influenced by scape removal

ISHS Secretariat
Bolting garlic quality and morphological traits are influenced by scape removal

Iva Bažon is a PhD student at the Institute of Agriculture and Tourism (Poreč, Croatia), Department of Agriculture and Nutrition, and she has enrolled in a PhD study program at the University of Zagreb, Faculty of Agriculture (Croatia). Her work is financed through Young Researchers’ Career Development Project (ESF DOK-2018-01) and the Centre of Excellence for Biodiversity and Molecular Plant Breeding (CroP-BioDiv, KK. She is involved in the research of morphological and biochemical traits of Croatian garlic landraces maintained in a genebank collection of the Institute. Garlic is propagated vegetatively with cloves, but bulbs still may vary in morphological traits and content of secondary metabolites. The identification and selection of clones with superior agronomic and biological value is gaining interest for their use in the breeding programs. Garlic landraces can be bolting or non-bolting and many bolting old landraces are grown in the northern coast of Croatia. The aim of this research was to better understand the effect of growing technologies applied by local producers on garlic landraces’ yield and quality. Scape removal is a common agricultural practice applied because garlic is usually sold in braids. This procedure may affect bulb size. The objective of this research was to determine the impact of garlic landrace and scape removal on morphological, physical and biochemical quality parameters. ‘Istarski crveni’ had higher dry matter (DM), firmness and antioxidant capacity (FRAP), while ‘Brsečki’ was found to be superior in bulb size, intensity of red coloration, total soluble solids (TSS) and glucose content. When scapes were removed the bulbs were larger, but TSS, DM, glucose, volatile diallyl disulfide and the antioxidant capacity (DPPH) were lower. It was concluded that the practice of scape removal may be applied by producers if bulb size is preferred over content of physical (TSS, DM) and some biochemical parameters.

Iva Bažon won the ISHS Young Minds Award for the best oral presentation at the VIII South-Eastern Europe Symposium on Vegetables and Potatoes, which was held virtually in North Macedonia in September 2021.

Iva Bažon, Institute of Agriculture and Tourism, Department of Agriculture and Nutrition, Karla Huguesa 8, 52440 Poreč, Croatia, e-mail:

The article is available in Chronica Horticulturae

garlic quality
scape removal
Young Minds Award Winners