[1]ZHANG Dan,CAO Yun,ZHENG Lin.Responses of Germination of Pinus Elliottii Seeds to Simulating Water Stress[J].Research of Soil and Water Conservation,2011,18(01):188-191.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
18
Number of periods:
2011 01
Page number:
188-191
Column:
Public date:
2011-02-20
- Title:
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Responses of Germination of Pinus Elliottii Seeds to Simulating Water Stress
- Author(s):
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ZHANG Dan1, CAO Yun1,2, ZHENG Lin1,2
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1. College of Geography and Environment, Jiangxi Normal University, Nanchang 330022, China;
2. Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China
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- Keywords:
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P. elliottii; PEG-6000; water stress; seed germination
- CLC:
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S718.43;S791.246
- DOI:
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- Abstract:
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The artificial water stress treatment was conducted with polyethylene glycol (PEG-6000) hypertonic solution, so that we can find the response of seeds of Pinus elliottii to water stress. The results indicate that: with water stress increased, P. elliottii seed germination rate, relative germination rate, germination potentiality, germination index, seedling shoot length and root length, biomass had a decreasing tendency in different degrees; By established linear regression equation of seed germination under water stress, we can predict the drought tolerance critical value is -0.68 MPa and limited value is -1.14 MPa; The water stress had great impact on seed germination of P. elliottii early and will delay its germination time ranging from 1~8 d, respectively; The root of P. elliottii had a more stable growth under light water stress, showing adaptability to drought. When the concentration of PEG-6000 decrease to -0.8 MPa, the P. elliottii seed can not sprout into seedlings, aimed to adapt to drought environment, under -1.07 MPa the biomass decreased to 0 directly.