Studies on Pb Uptake, Distribution and Accumulation in Wheat

doi:10.3321/j.issn:1000-7091.2005.04.008

Abstract

Abstract: Through the field experiment,the dynamic development regulation of uptake,distribution and accumulation of Pb in wheat was studied.The results showed that in different growth stages,Pb content in different organs of wheat was different; and the Pb accumulation in different organs was different too.At late filling stage,to different organs of wheat,the order of the Pb content was root abandonment leaf stem leaf sheath glume spike stalk grain;and the order of the Pb accumulation was abandonment stem leaf sheath glume leaf grain spike stalk.So,root,abandonment,steam and leaf were these organs in wheat gathering Pb easily.But there was very little Pb in grain.The amount of Pb uptake in wheat in reproductive growth stages was more than in vegetation growth stages.And the uptake amount of Pb and the uptake speed of Pb from jointing stage to heading stage and from early filling stage to middle filling stage were much higher than any others.

Key words: Wheat, Pb, Uptake, Distribution, Accumulation

CLC Number:

S512.101

SHAO Yun, JIANG Li-na, LI Xiang-li, LU Xu-yang, LI Chun-xi. Studies on Pb Uptake, Distribution and Accumulation in Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2005, 20(4): 28-31. doi: 10.3321/j.issn:1000-7091.2005.04.008.

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