Naslov
Fotosinteza pšenice zaražene fuzarijskom paleži klasa
(Photosynthesis of wheat infected with Fusarium head blight)

Autori
Katanić, Zorana ; Mlinarić, Selma ; Ćosić, Josipa ; Katanić, Nataša ; Drezner, Georg ; Španić, Valentina

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

Izvornik
Zbornik sažetaka 56. HRVATSKOG I 16. MEĐUNARODNOG SIMPOZIJ AGRONOMA / Rozman, Vlatko ; Antunović, Zvonko - Osijek, 2021, 124-125

Skup
56. hrvatski i 16. međunarodni simpozij agronoma

Mjesto i datum
Vodice, Hrvatska, 05.09.2021. - 10.09.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
biotički stres, Fusarium, fluorescencije klorofila a, fotosintetska učinkovitost, Triticum aestivum
(biotic stress, Fusarium, chlorophyll a fluorescence, photosynthetic efficiency, Triticum aestivum)

Sažetak
Fusarium head blight (FHB) is a serious disease of wheat (Triticum aestivum L.) which can reduce yield and quality of the grain. In order to investigate effect of FHB on photosynthesis of winter wheat varieties with different susceptibility, artificial inoculation with Fusarium graminearum and F. culmorum (1:1) was performed in the field at the Agricultural Institute Osijek in 2019/2020. Analysis of fast chlorophyll a fluorescence transients of flag leaf and ear revealed that more significant changes in photosynthetic efficiency due to FHB occurred in ears, in comparison to leaves. Decrease of performance index (PIABS) and maximum quantum yield of PS II (TR0/ABS) in the inoculated ears, in comparison to control (natural infection) of variety Golubica was detected three days post inoculation, indicating that changes in photosynthetic apparatus of this susceptible variety occurred before visual symptoms of the infection. Upon symptom development, inoculated ears of Golubica showed increase of PIABS and TR0/ABS, while progression of the disease resulted in reduced photosynthetic performance, in comparison to control. Impact of FHB on ear photosynthetic efficiency of resistant variety (Galloper) was also evident, especially in the later stages of the infection, but it was less severe than for variety Golubica. Overall, this study indicated that Fusarium sp. infection may induce changes in photosynthetic performance and functioning of PSII in ears of wheat.

Izvorni jezik
Hrvatski, engleski

Znanstvena područja
Biologija, Poljoprivreda (agronomija)

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