Seed Germination, Seedling Growth and Enzyme Activity of Wheat Seed Primed under Drought and Different Temperature Conditions

Seed Germination, Seedling Growth and Enzyme Activity of Wheat Seed Primed under Drought and Different Temperature Conditions

The study aimed was to determine the effects of drought stress (0, -4, -8, -12 bar) and osmopriming (-15 bar PEG 6000 for 15 at 24 h) on seed germination, seedling growth and enzyme activity at different temperatures were assessed in the laboratory for wheat. Results showed that the highest germinat...

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Veröffentlicht in:Journal of stress physiology & biochemistry 2013-01, Vol.9 (4), p.310-318
Hauptverfasser: Azadi, M S, Younesi, E, Tabatabaei, S A
Format: Artikel
Sprache:eng ; rus
Schlagworte:
Ascorbic acid
Catalase
Drought
Enzymatic activity
enzyme activity
Enzymes
enzymic activity
Germination characteristics
L-Ascorbate peroxidase
Osmo-priming
PEG 6000
Peroxidase
Plant growth
Seed germination
Seedlings
Seeds
Wheat
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Zusammenfassung:The study aimed was to determine the effects of drought stress (0, -4, -8, -12 bar) and osmopriming (-15 bar PEG 6000 for 15 at 24 h) on seed germination, seedling growth and enzyme activity at different temperatures were assessed in the laboratory for wheat. Results showed that the highest germination percentage (GP) (94.33%), normal seedling percentage (NSP) (92%), germination index (GI) (44.85) and seedling length (11.03 cm) were attained from osmo-priming in control conditions. Therefore, seed priming with PEG 6000 significantly (p≤ 0.01) increased germination characteristics as compared to the unprimed seeds under drought stress. Also, osmopriming increased catalase (CAT) and ascorbate peroxidase (APX) as compared to the unprimed.
ISSN:1997-0838
1997-0838