The Salinity Effect on Morphology and Pigments Content in Three Pau- Lownia Clones Grown Ex Vitro
Year: 2013
Type: article
Abstract: We evaluated the effect of salt stress on growth parameters, chlorophyll a, chlorophyll b and carotenoids content in Paulowniaclones (P. elongata x fortunei x elongata – T2, P. elongata x elongata – T4, P. elongata x kawakarnii – EK) grew as hydroponicculture at three levels of salinity, 50 mmol.l–1, 100 mmol.l–1, 200 mmol.l–1 sodium chloride (NaCl) solution. The rootand stem length, as well as leaf number and total leaf area of T2 clone were reduced insignifi cantly in comparison with theseof T4 and EK clones during NaCl treatment. Control of T2 clone was characterized with approximately twice higher total drymass per plant than EK and T4 clones. The root dry mass to shoot dry mass ratios of three clones changed in a different mannerwith increasing salinity levels and was highest in EK clone at 200 mmol.l–1 NaCl, followed by T4 and T2. The total leaf areashowed the capability of a plant in forming of photosynthetic surface and was reduced more in T4 and EK clones under saltstress. Our results suggest that T2 clone was more tolerant to salt stress than EK and T4 clones.
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W2186645894