Investigation of the Mechanism of Physiological Tolerance in Lentil (Lens culinaris Medik.) Cultivars under Drought Stress Conditions

Year 2017, , 31 - 35, 27.12.2017

Hande Morgil Yusuf Can Gercek Mahmut Caliskan Gul Cevahir Oz

https://doi.org/10.5152/EurJBiol.2017.1706

Abstract

Lentil
(Lens culinaris Medik.) is valued throughout the world for human and animal
nutrition because of its high protein, vitamin, and mineral contents. Lentil
production has decreased worldwide due to global warming. Although the
physiological parameters of lentil plants have been examined under drought
conditions, its tolerance mechanism has not been fully elucidated yet. In this
study, lentil seedlings following germination were exposed to drought stress
using 15% polyethylene glycol (PEG) application for 7 days. The untreated
control plants were allowed to grow under conditions similar to that of
germination. Oxidative stress responses (relative water content, chlorophyll
content, H2O2 formation, lipid peroxidation, and proline accumulation) were
compared in leaf samples of experimental and control group plants grown for 7
days under drought stress. Although the physiological and biochemical responses
of the cultivars Fırat 87 and Çiftçi were close to each other, proline
accumulation, malondialdehyde, and H2O2 levels were found to increase in the
Sultan cultivar. Thus, it can be concluded that Fırat 87 and Çiftçi cultivars
are more resistant to drought than the Sultan cultivar.

Keywords

Lentil, drought stress, oxidative stress, drought-tolerant, drought-sensitive, physiological tolerance mechanism

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