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Effects of cadmium stress on the seedlings growth and physiological characteristics of different wheat cultivars

Ying Dong

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Abstract

In a hydroponic experiment, four wheat cultivars (Yumai 4, Yangmai 15, Baofeng 7228, and Ningmai 13) were used as test objects to study the effects of cadmium (Cd) stress on their seedlings growth and antioxidant enzyme system. The results indicated that under Cd stress, the plant growth, chlorophyll formation, and nitrate reductase activity were inhibited significantly, catalase (CAT) and peroxidase (POD) activities decreased dramatically, while H2O2 and malondialdehyde (MDA) contents increased. Such responses differed with test wheat cultivars, and Yangmai 15 had a higher Cd-tolerance than the others.

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What this paper is about

In a hydroponic experiment, four wheat cultivars (Yumai 4, Yangmai 15, Baofeng 7228, and Ningmai 13) were used as test objects to study the effects of cadmium (Cd) stress on their seedlings growth and antioxidant enzyme system. The results indicated that under Cd stress, the plant growth, chlorophyll formation, and nitrate reductase activity were inhibited significantly, catalase (CAT) and peroxidase (POD) activities decreased dramatically, while H2O2 and malondialdehyde (MDA) contents increased. Such responses differed with test wheat cultivars, and Yangmai 15 had a higher Cd-tolerance than the others.

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Available abstract

In a hydroponic experiment, four wheat cultivars (Yumai 4, Yangmai 15, Baofeng 7228, and Ningmai 13) were used as test objects to study the effects of cadmium (Cd) stress on their seedlings growth and antioxidant enzyme system. The results indicated that under Cd stress, the plant growth, chlorophyll formation, and nitrate reductase activity were inhibited significantly, catalase (CAT) and peroxidase (POD) activities decreased dramatically, while H2O2 and malondialdehyde (MDA) contents increased. Such responses differed with test wheat cultivars, and Yangmai 15 had a higher Cd-tolerance than the others.

Key concepts: Catalase, Cultivar, Malondialdehyde, Peroxidase, Point of delivery, Nitrate reductase, Cadmium, Horticulture

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