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| Effects of Calcium Deficiency on Growth and Nutrition Quality of Bunching Onion |
| Liu Weiping,Chen Riyuan,Sun Guangwen,et al. |
| (College of Horticulture,South China Agriculture University,Guangzhou 510642) |
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Abstract The effects of calcium deficiency on growth and nutrition quality of sandy grwon bunching onion(Allium fistulosum L.var.caespitosum Makino)were studied in this expriment.The results showed that the rate of tipburn increased while calcium concentration decreased.The growth of the bunching onion was inhibited by calcium deficiency.With calcium decreasing,concentrations of chlorophyll and carotenoid in leaves,root activities,concentrations of allicin and soluble sugar of bunching onion decreased,while VC concentrations increased.The soluble protein concentration was the lowest while the pyruvic acid concentration was the highest at 40 mg?L-1 Ca level.The flavone concentrations in leaf increased as calcium decreased,those in false stem of were the highest at 80 mg?L-1 Ca level.
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Received: 03 September 2007
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