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作 者 ：陈贵林1;高洪波1;乜兰春1;尚庆茂2;刘中笑2

期 刊 ：植物营养与肥料学报 2002年 8卷 4期 页码：478-482

关键词：缺钙；茄子嫁接苗；生长；抗冷性；

Keywords:calcium-deficient, grafted eggplant seedlings, growth, cold resistance,

摘 要 ：研究了营养液缺Ca处理对茄子嫁接苗抗冷效应的影响。结果表明,缺Ca严重影响了植株的生长发育。在低温胁迫下,与供Ca处理相比,缺Ca处理显著降低了茄子嫁接苗和自根苗叶片总可溶性蛋白、热稳定蛋白和可溶性糖含量,细胞内可溶性Ca和结合Ca含量也显著降低。在相同的低温胁迫时间内,嫁接苗的总可溶性蛋白、热稳定蛋白、可溶性糖含量、细胞内可溶性Ca和结合Ca含量显著高于自根苗。低温胁迫下茄子嫁接苗总可溶性蛋白、热稳定蛋白、可溶性糖含量的提高是由于嫁接苗细胞内可溶性Ca和结合Ca含量的变化引起的。表明Ca含量的变化是其抗冷性强的内在原因,对增强茄子嫁接苗碳水化合物含量和提高植株抗冷性方面起着重要的作用。

Abstract:The effects of calcium on chilling resistance of grafted and ownroot eggplant seedlings under chilling stress were studied. Solution culture was conducted to study the effects of calciumdeficient treatment on growth and cold resistance of grafted eggplant seedlings. The results showed that under the calciumdeficient conditions the growth of seedlings was seriously inhibited. The contents of total soluble protein, heat stable protein, soluble sugar, intracellular soluble calcium and bound calcium in grafted and ownroot calciumdeficient eggplant seedling leaves were obviously lower than those of calcium sufficiency under low temperature condition. The contents of total protein, heat stable protein, soluble sugar, intracellular soluble calcium and bound calcium of grafted seedlings were all obviously higher than those of ownroot seedlings under the same stress. The study suggested that the higher carbohydrate contents of grafted seedlings might be caused by intracellular calcium variations. The variations of calcium contents were perhaps the main reason that the grafted seedlings were higher in cold resistance than ownroot seedlings. As a result calcium played an important role in increasing the contents of carbohydrate and enhancing cold resistances.

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