Naslov
Screening of garlic landraces for drought tolerance: photosynthetic and spectral response

Autori
Išić, Nina ; Franić, Mario ; Sivec, Marta ; Ban, Dean ; Goreta Ban, Smiljana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Zbornik sažetaka 57. Hrvatskog i 17. međunarodnog simpozija agronoma / - , 2022, 163-163

Skup
57. Hrvatski i 17. međunarodni simpozij agronoma

Mjesto i datum
Vodice, Hrvatska, 19.-24-06.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Allium sativum L., abiotic stress, gas exchange, NDVI, NPCI

Sažetak
Since drought is a major obstacle in agricultural production, a search for cultivars better adapted to a lack of water is needed. The wide spectrum of garlic diversity in Croatia provides a possible level of variation in its tolerance to drought. Since garlic is a sterile crop and propagated vegetatively, in searching for drought tolerance focus can be shifted to physiological parameters in order to choose tolerant landraces. In this research, 36 garlic landraces were analyzed in their morphological and physiological responses to water stress by measuring gas exchange (LI-6800, LI-COR, USA) and multispectral traits (PlantEye Microscanner, Phenospex, Netherlands). Drought led to a significant decrease in gas exchange parameters. Transpiration rate in drought stressed plants decreased for 48% compared to well-watered plants, and other photosynthetic parameters followed. Interaction between landrace and drought stress was found in assimilation and transpiration indicating differences in landrace response. A change in spectral vegetation indices was found, suggesting increased stress in drought exposed garlic plants compared to well-watered ones. However, no significant difference in digital biomass was observed. Differences among garlic landraces in drought stress tolerance could be used for selection of more adapted cultivars. Combining morphological and spectral traits with photosynthetic response to water shortage can give an insight into garlic adaptations to drought stress.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA