Naslov
Effect of aluminium toxicity on concentration of photosynthetic pigments in two potato cultivars with different aluminium sensitivity

Autori
Lazarević, Boris ; Jurkić, Vesna ; Horvat, Tea ; Poljak, Milan

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

Izvornik
6th Balkan Symposium on Vegetables and Potatoes, Book of Abstracts / Organizing Committee of 6th Balkan Symposium on Vegetables and Potatoes - Zagreb : Agronomski fakultet Sveučilišta u Zagrebu, 2014, 32-33

ISBN
978-953-7878-20-7

Skup
6th Balkan Symposium on Vegetables and Potatoes

Mjesto i datum
Zagreb, Hrvatska, 29.09.2014. - 02.10.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
aluminium toxicity; potato (Solanum tuberosum L.); chlorophyll; carotenoids; chlorophyll content index

Sažetak
Beside the root growth inhibition aluminium (Al) toxicity can cause reduction of the photosynthetic pigments in leaves. The aim of this research was to determine the short term effect of Al toxicity on chlorophyll a (chl a), chlorophyll b (chl b), and carotenoids concentrations, and the chlorophyll content index (CCI) in leaves of Al-sensitive (cv. Canberra) and Al-tolerant (cv. Tresor) potato cultivar. Concentration of pigments (chl a, chl b, and carotenoids) were measured spectrophotometrically, while CCI was measured by CCM-200 (Opti-Sciences Inc., Hudson, USA), in leaves of cv. Canberra and cv. Tresor plantlets grown for ten days in control (0 µmol Al L-1) and Al treatment (50 µmol Al L-1) solutions. Al treatment caused significant increase of chl a (for 20.2%) and chl b (for 26.4%) in cv. Tresor, while there were no difference in chl a and chl b concentrations between Al treatment and control solutions grown cv. Canberra. On the other hand Al treatment caused reduction of carotenoids in both potato cultivars (on average by 11.1%) while the chl a : chl b ratio was not affected by the Al treatment. CCI values of both cultivars increased in Al treatment solutions. CCI values correlated better with chlorophyll concentrations for plants grown in control solutions (correlation coefficients were 72.5, 76.5, and 57.5 for correlations between CCI and chl a + b, CCI and chl a, and CCI and chl b, respectively).

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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