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Journal of Tea Science ›› 2009, Vol. 29 ›› Issue (3): 200-206.doi: 10.13305/j.cnki.jts.2009.3.004

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Pb Absorption and Accumulation in Tea Plants

HAN Wen-yan1, YANG Ya-jun1, LIANG Yue-rong2, SHI Yuan-zhi1, MA Li-feng1, RUAN Jian-yun1, TANG Jia-yi3   

  1. 1. Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China;
    2. Tea Research Institute of Zhejiang University, Hangzhou 310029, China;
    3. Yunnan Agricultural University, Kunming 650201, China.
  • Received:2008-10-08 Revised:2008-11-07 Online:2009-06-15 Published:2019-09-06

Abstract: The characteristics of Pb absorption and accumulation in tea plants were studied by the analysis of Pb concentration in different parts of tea plant, in shoots of various seasons, cultivars and ages of tea plant. The results showed that feeding roots had the highest Pb concentration, followed by bud producing stems, lateral branches and old leaves, tender shoots and tea seeds were the lowest. Pb concentration in shoots and leaves increased with their maturity. Tea mature leaves and shoots had obvious seasonal change in Pb concentration with the highest during April to June and with the lowest in July for mature leaves, and spring > autumn > summer for shoots. A significant correlation was found between shoots and mature leaves in Pb concentration. A tendency was also found that the higher Pb concentration in shoots from the older tea plants. The Pb concentration in shoots from various tea cultivars was different to some degree.

Key words: tea, Pb, distribution, absorbing and accumulating characteristics

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