|Table of Contents|

Growth Effects of Pb on Seedling of Lactuca sativa L.and Brassica campestris L.ssp(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2012年13期
Page:
12-15
Research Field:
Publishing date:

Info

Title:
Growth Effects of Pb on Seedling of Lactuca sativa L.and Brassica campestris L.ssp
Author(s):
ZUO Feng-yue1; 2; HU Zong-yang3; YANG Jing-hui2; 3; LI Jian-ke2; 3; LI Tong3; LI Shuang-yue2; 3
1.College of Horticulture and Landscape Architecture，Southwest University，Chongqing 400715；2.China-Japan (Tianjin) Collaborative Research Center for the Rural Environment and Resource，Tianjin 300384；
3.Department of Horticulture，Tianjin Agricultural University，Tianjin 300384
Keywords:
Pb; leaf number; leaf area; plant hight; dry weight; fresh weight
PACS:
X 503.23
DOI:
-
Abstract:
In order to understand the effect of lead on the growth of Lactuca sativaL.and Brassica campestris L.ssp，the seedlings of the two plants with different concentration of lead nitrate solution through the method of soilless cultivation were conducted，and growth indexes were analyzed.The results showed that lead processing influenced the two kinds of plants’ growth in different level，and reduced the rate of growth.However，all the indexes were still present the increasing trend，except the fresh weight，dry weight of stem leaf and root.In the same processing time，high levels of lead made the Lactuca sativa L.’s indexes of leaf number，leaf area，plant height and the fresh weight，dry weight of stem leaf declined obviously，and the fresh weight，dry weight of root increased.With high levels of lead processing，each index of Brassica campestris L.ssp trended to decrease.In 0.005 mg/L lead processing，each index of Lactuca sativa L.was slightly better than control，and each index of Brassica campestris L.ssp was slightly lower.It suggested that Lactuca sativa L. was more sensitive in low concentrations of lead.In 0.015 mg/L processing，each of the index of Lactuca sativa L.and Brassica campestris L.ssp reduced significantly，especially Brassica campestrisL.ssp reduced more.In 0.045 mg/L high concentration lead，each index of Lactuca sativa L.and Brassica campestrisL.ssp changed biggest，and the growth was obvious inhibition.So high concentrations of lead made more influence on the growth of Brassica campestris L.ssp.

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Last Update: 2014-09-15