Calcium influence on chilling resistance of grafting eggplant seedlings
Calcium influence on chilling resistance of grafting eggplant seedlings
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DOI：
10.1081/pln-200025833
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发表时间：
2004-01-01
影响因子：
2.1
通讯作者：
Lin, HA
中科院分区：
文献类型：
--
作者：
Gao, HB;Chen, GL;Lin, HA
采用水培方法研究了钙对茄子嫁接苗抗冷性的影响。在5 ℃下，充足钙处理下嫁接苗的过氧化物酶（POD）、超氧化物歧化酶（SOD）和过氧化氢酶（CAT）活性均明显高于缺钙处理，分别在低温胁迫36 h、24 h和24 h达到峰值。不饱和脂肪酸（乌法）含量、乌法与SFA的比值（U/S）、乌法指数（IUFA）等细胞膜流动性参数也明显增加。丙二醛（NIDA）和饱和脂肪酸（SFA）含量低于缺钙组。提示上述参数的变化可能与细胞内钙离子水平有关。钙含量可能是嫁接苗比自根苗抗冷性强的主要原因。钙在提高茄子嫁接苗抗冷性方面起着重要作用。
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.