|Table of Contents|

Effects of Exogenous Zinc on Seed Germination and Seedling Growth of Atractylodes macrocephala

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年03
Page:
98-106
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Zinc on Seed Germination and Seedling Growth of Atractylodes macrocephala
Author(s):
ZHOU Wuxian1; LI Darong1; GONG Siyu2; ZHOU Liang3; ZHANG Meide1; WANG Hua1
(1.Institute of Chinese Herbal Medicines,Hubei Academy of Agricultural Sciences,Enshi,Hubei 445000;2.Science and Technology Department,Hubei Academy of Agricultural Sciences,Wuhan，Hubei 430064;3.Agricultural and Rural Bureau of Mayang Miao Autonomous County,Huaihua,Hunan 419400)
Keywords:
Atractylodes macrocephala; zinc; seed germination; chlorophyll; antioxidant enzymes
PACS:
-
DOI:
10.11937/bfyy.20213406
Abstract:
Taking Atractylodes macrocephala as test material,the effects of exogenous zinc (Zn) on seed germination and seedling growth of Atractylodes macrocephala were explored through a pot experiment,in order to provide reference for rational zinc application and efficient breeding of A.macrocephala.The results showed that the growth of A.macrocephala seedlings was promoted by low Zn levels (100 mg·L-1) and inhibited by high levels (200 mg·L-1).100 mg·L-1 Zn treatment had the best effect on the seed germination and seedling growth of A.macrocephala.Compared with the control,100 mg·L-1 Zn treatment significantly increased the root length,plant height,leaf number and fresh weight of A.macrocephala seedlings by 68.3%,29.1%,21.2% and 20.0%,respectively.The content of chlorophyll a,chlorophyll b,total chlorophyll and carotenoid in A.macrocephala seedling leaves under 100 mg·L-1 Zn treatment were also significantly increased by 16.7%,26.2%,19.4% and 5.9%,respectively,compared with the control.Moreover,the content of soluble protein (SP) in A.macrocephala seedling leaves was significantly increased while the soluble sugar (SS) and malondialdehyde (MDA) were decreased under the 100 mg·L-1 Zn treatment,compared with the control.Meanwhile,the activities of catalase (CAT) and superoxide dismutase (SOD) in A.macrocephala seedling leaves were also significantly decreased under the 100 mg·L-1 Zn treatment,compared with the control.However,the root length,plant height,fresh weight,dry weight and chlorophyll content of A.macrocephala seedlings under 200 mg·L-1 Zn treatment were significantly lower than those of the control.In conclusion,Zn had a typical dose effect on the growth of A.macrocephala seedlings,and 100 mg·L-1 Zn should be recommended.

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Last Update: 2022-05-04