|Table of Contents|

Alleviative Effects of Gibberellin on Seed Germination and Seedling Growth of Coix lacryma Under Lead Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2023年08
Page:
101-106
Research Field:
Publishing date:

Info

Title:
Alleviative Effects of Gibberellin on Seed Germination and Seedling Growth of Coix lacryma Under Lead Stress
Author(s):
ZHONG Jing; ZHANG Yaoxin; WANG Liangjie; LI Jinghong
(School of Chemistry and Life Science,Hubei University of Education/Hubei Key Laboratory of Purification and Application of Plant Anti-Cancer Active Ingredients,Wuhan,Hubei 430205)
Keywords:
GA3; Coix lacryma; lead stress; mitigation effects
PACS:
-
DOI:
10.11937/bfyy.20223097
Abstract:
The alleviating effect of exogenous gibberellin (GA3) on lead stress was studied with Coix lachryma as experimental material and seed germination method,in order to provide reference for the prevention of lead toxicity in the process of Coix lacix planting.The results showed that the low and medium concentration (25,50,100 mg?L-1) of GA3 could promote seed germination and seedling growth.Low concentration (25 mg?L-1) GA3 treatment had no significant effect on the inhibition of photosynthetic pigment content under lead stress.50,100 mg?L-1 GA3 could significantly increase the contents of chlorophyll a/b and carotenoids,thereby alleviate the damage of lead stress to plant photosynthesis.100 mg?L-1 GA3 could increase SOD and POD activities,reduce MDA,relative conductivity,proline and soluble sugar content,and maintain the normal function of cell membrane by reducing the level of membrane lipid peroxidation,so as to alleviate the toxic effect of lead on Coix plants.However,high concentration of GA3 has little effect on alleviating lead stress.

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Last Update: 2023-05-12