|Table of Contents|

Regulatory Effects of Different Exogenous Growth Regulators on  Cadmium Toxicity for Cucumber

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2018年09
Page:
68-72
Research Field:
Publishing date:

Info

Title:
Regulatory Effects of Different Exogenous Growth Regulators on  Cadmium Toxicity for Cucumber
Author(s):
SUN Hongyan1; ZHOU Zhaowei1; WANG Xiaoyun2; WANG Rui1
(1.College of Chemical and Biological Engineering，Taiyuan University of Science and Technology，Taiyuan，Shanxi 030024；2.Institute of Shanxi Soil and Water Conservation，Taiyuan，Shanxi 030045)
Keywords:
cucumber (Cucumis sativus L.); cadmium toxicity; growth regulators; regulation
PACS:
-
DOI:
10.11937/bfyy.20174183
Abstract:
The cucumber variety ‘Jinyan 4’ was used as research material，the regulatory effects of different exogenous growth regulators under 70 mg?kg-1 Cd stress on root length，plant height，chlorophyll content and soluble protein content of cucumber seedlings were studied based on pot experiment，in order to provide reference basis for Cd tolerance cultivation of cucumber.The results showed that Cd treatment could significantly decrease cucumber root length，plant height，contents of chlorophyll and soluble protein，while exogenous growth regulators could regulate cucumber cadmium toxicity symptoms in different degree.Exogenous Se，GA and HCA+GA+MLT significantly promoted root length and height growth of cucumber under Cd stress，and the root length growth of cucumber seedlings returned to the control level.Exogenous Se significantly increased chlorophyll a content，chlorophyll b content，chlorophyll a+b content and chlorophyll a/b value in cucumber leaves，with the largest increase value in chlorophyll b content，which increased 52.3% compared with Cd treatment alone.Exogenous Se，HCA and Se+GA+MLT treatments could significantly restore soluble protein content in cucumber under Cd stress.It suggested that the four exogenous growth regulators could regulate cucumber cadmium toxicity to some extent，and the regulation of Se was the most obvious，which had distinct alleviation effect on cucumber cadmium toxicity.

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Last Update: 2018-05-23