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[1]ZHANG Fengying,DU Zhizhi,HE Jiawei,et al.Effects of Eupatorium adenophorumii Litter Aqueous Extract on Its Seed Germination and Seedling Growth[J].Research of Soil and Water Conservation,2016,23(03):291-296,303.

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Effects of Eupatorium adenophorumii Litter Aqueous Extract on Its Seed Germination and Seedling Growth

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 03 Page number: 291-296,303 Column: Public date: 2016-06-28

Title:: Effects of Eupatorium adenophorumii Litter Aqueous Extract on Its Seed Germination and Seedling Growth

Author(s):: ZHANG Fengying¹, DU Zhizhi², HE Jiawei³, YANG Liyun³; 1. College of Tropical Crops, Yunnan Agriculture University, Kunming 665000, China;
2. Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China;
3. Institute of Alpine Economic Plants, Yunnan Academy of Agricultural Sciences, Lijiang, Yunnan 674100, China

Keywords:: Eupatorium adenophorumii; litter; aqueous extract; seed germination; seedling growth

CLC:: Q793

DOI:: -

Abstract:: Seed germination and seedling growth of Eupatorium adenophorumii were measured under treatments of its litter aqueous extracts with the concentrations ranging from 0.05 to 0.30 gDW/ml under incubation. The results showed that the indexes of seed germination and seedling growth were significantly inhibited by the higher concentration of Eupatorium adenophorumii litter aqueous extract. When the concentration of aqueous extract was 0.05 g/ml, the indexes of seed germination and seedling growth was no significant difference with CK (p > 0.05). Seed germination rate, germination potential, germination index, radicle length, seedling fresh weight and dry weight were sharply reduced with the increase of the aqueous extract concentration (p < 0.05). At the same time, the seed germination time was delayed when the concentration of aqueous extract was higher than 0.05 g/ml, but the increase of seedling dry weight were not affected under the same concentration. The higher Eupatorium adenophorumii litter aqueous extract (0.30 g/ml) led to the seed deactivation. Correlation analysis showed that contents of malondialdehyde (MDA) and membrane permeability were a significant linear positive correlation with aqueous extract concentration (p < 0.001), respectively. The content of chlorophyll, root activity (TTC), protective enzyme (POD, SOD, CAT) and the activity of protective enzyme (PPO, PAL) had the significant linear negative correlation with aqueous extract concentration (p < 0.001). Comprehensive analysis indicated that the aqueous extracts from the litter of Eupatorium adenophorumii had autotoxicity on its seed germination and seedling growth.

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