Calcium influence on chilling resistance of grafting eggplant seedlings

文献类型: 外文期刊

第一作者: Gao, HB

作者: Gao, HB;Chen, GL;Han, LH;Lin, HA

作者机构:

关键词: calcium;chilling stress;eggplant seedlings;antioxidant enzyme;fatty acid

期刊名称:JOURNAL OF PLANT NUTRITION ( 影响因子:1.707; 五年影响因子:1.645 )

ISSN: 0190-4167

年卷期: 2004 年 27 卷 8 期

页码:

收录情况: SCI

摘要: Calcium (Ca) influence on chilling resistance of grafting eggplant seedlings were studied in a hydroponic system. Under the calcium sufficient treatment, the activities of peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT) in grafting seedlings at 5degreesC were all obviously higher than those of calcium deficiency, peaking at 36 h, 24 h, and 24 h chilling stress, respectively. Several parameters of cellular membrane fluidity, such as content of unsaturated fatty acid (UFA), the ratio of UFA to SFA (U/S), index of UFA (IUFA) also distinctively increased. The contents of malondialdehyde (NIDA) and saturated fatty acid (SFA) were lower than those of calcium deficiency. This study suggests that the variation of parameters mentioned above might be caused by cellular calcium levels. Calcium content was potentially the main reason that grafting seedlings had higher chilling resistance than own-root seedlings. Calcium appears to play an important role in increasing chilling resistance of grafting eggplant seedlings.

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