|Table of Contents|

Effects of Cupressus funebris rhizospheric soil extracts on seed germination and seedling growth of three crops in a Hilly Area of the Central Sichuan Basin(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2020 02
Page:
394-399
Research Field:
Articles
Publishing date:

Info

Title:
Effects of Cupressus funebris rhizospheric soil extracts on seed germination and seedling growth of three crops in a Hilly Area of the Central Sichuan Basin
Author(s):
YANG Yulian LIU Xiaoli WU Lijun LU Yao & WU Qinggui?
Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China
Keywords:
Cupressus funebris soil extract allelopathy seeds germination seedling growth crops
CLC:
-
PACS:
DOI:
10.19675/j.cnki.1006-687x.2019.05042
DocumentCode:

Abstract:
The allelopathic effects of certain plant and soil extracts can impact seed germination and seedling growth. However, it remains to be determined whether and how the soil extracts of Cupressus funebris impact seed germination and seedling growth of the crops of the Hilly Area of the Central Sichuan Basin. We hypothesized that the soil extracts of Cupressus funebris would restrain both the seed germination and seedling growth of the crops. We conducted a laboratory experiment to examine the allelopathic effects of the soil extracts (0.00 g/mL, 0.01 g/mL, 0.02 g/mL, 0.05 g/mL, and 0.10 g/mL) on the seed germination and seedling growth of tomato (Lycopersicon esculentum), pepper (Capsicum annuum), and eggplant (Solanum melongena). Our results demonstrated that variation in soil extracts can impact seed germination and seedling growth, but the effects were species specific. In tomato plants, the vigor index significantly increased, but the fresh root weight significantly decreased at 0.01 g/mL of soil extracts. Tomato root length significantly increased at 0.05 g/mL of soil extracts, whereas the seed germination rate decreased at 0.10 g/mL of soil extracts. Soil extracts obviously reduced the germination energy and fresh seedling weight of pepper. The root lengths and fresh root weights of pepper were obviously decreased at 0.01 g/mL and 0.02 g/mL of soil extracts, respectively. For eggplants, soil extracts significantly increased the vigor index but decreased the fresh root weight. The comprehensive allelopathic effect index indicated that tomato and eggplant exhibited inhibitory and stimulatory effects, while pepper exhibited only an inhibitory effect. Meanwhile, the allelopathic sensitivity of crops to soil extracts was as follows: pepper > eggplant > tomato. These results demonstrate that soil extracts can impact seed germination and seedling growth. Our results also suggest that pepper planting should be avoided in the slopes of farmland with Cupressus funebri in the Hilly Area of Central Sichuan Basin.

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Last Update: 2020-04-25