2006•Gansu Nongye Daxue xuebaoRequires access

Effects of low temperature on physiological and biochemical characteristics of pepper seedlings

Xu Weihui, Lanlan Wang, Zhigang Wang

Abstract

The physiological and biochemical indexes of seedling leaves of six different pepper cultivars were determined after these seedlings were treated under 5,8 ℃ and 15 ℃,respectively,for three days.The results showed that as the temperature dropped,the content of chlorophyll decreased,the content of malondialdehyde(MDA) increased,the activity of superoxide dismutase(SOD) decreased at the beginning and then increased,the activity of peroxidase(POD) was different among each cultivar under 8 ℃ and 15 ℃,but under 5 ℃ the activity of peroxidase(POD) of all cultivars increased.

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Key concepts: Pepper, Malondialdehyde, Point of delivery, Cultivar, Peroxidase, Superoxide dismutase, Seedling, Horticulture