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| Effects of Different Oligosaccharides on Mineral Element Absorption of Brassica campestris L.var.utilis Tsen et Lee |
| ZHANG Yun-hong1,WU Li-shu1*,LIU Yi-xian1,ZHANG Geng1,ZHAO Kai1,GENG Ming-jian1,ZHANG Shan-xue2 |
| 1College of Resources and Environmental Sciences,Huazhong Agricultural University,Wuhan 430070,Hubei,China;2Hainan Zhengye Zhongnong High Technolocy Co,Ltd,Haikou 570001,Hainan,China |
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Abstract A hydroponic trial was conducted to investigate effects of several oligosaccharides(sodium alginate and its oligosaccharides,oligoglacturonide and chitosan oligosaccharide)with the application concentration of 0,10, 20, 50,100 mg·L-1 on mineral element absorption of Brassica campestris L.var.utilis Tsen et Lee.The results showed that sodium alginate and its oligosaccharides and oligoglacturonide had significantly promotive effects on the absorption of N,P,Ca,Mg,B,Mn,Zn in low concentration.Oligoglacturonide with low concentration also promoted the K absorption to some extents.In high concentration,three oligosaccharides had no significant effects on the mineral element absorption,and did not improved Cu absorption in all concentration used in our experiment.Chitosan oligosaccharide could promote the absorption of N,Mg,B,Cu,Zn in low concentrations,but caused the luxury uptake of Cu and reduced the absorption of N,P,K,Mg,Mn and the transport of Ca from aerial part to the shoot in high concentrations.
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Received: 02 March 2009
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