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Study on Growth and Distribution of Iris germanica L.Under Lead Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年09期
Page:
82-86
Research Field:
Publishing date:

Info

Title:
Study on Growth and Distribution of Iris germanica L.Under Lead Stress
Author(s):
ZHU Xu-dong12TIAN Song-qing1YUAN Hai-yan2HUANG Su-zhen2
1.Suzhou Polytechnical Institute of Agriculture,Suzhou,Jiangsu 215008;
2.Institute of Botany,Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem.Sun Yat-san),Nanjing,Jiangsu 210014
Keywords:
Iris germanica L.lead(Pb)growthdistribution
PACS:
Q 945.78
DOI:
-
Abstract:
Taking Iris germanica L.as material,the growth,lead(Pb)accumulation,tolerance and distribution of Iris germanica L.seedlings under Pb stress were investigated by nutrient solution culture method.The results showed that the ramet seedling height,new adventive bud number,live leaf number,root length,root number,fresh biomass and dry biomass of Iris germanica L.were all decreased with an increase of Pb2+ under single Pb2+ stress.Electron microscopic results showed that Pb2+ deposited on the inner surface of cell walls and seriously destroyed the anatomical structure of root tip and leaf.In brief,Pb2+ treatments affected metabolic activity of Iris germanica L.and inhibited growth of roots,rhizomes and leaves.

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Last Update: 2014-08-13