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[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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Responses of Germination of Pinus Elliottii Seeds to Simulating Water Stress

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:: Responses of Germination of Pinus Elliottii Seeds to Simulating Water Stress

Author(s):: ZHANG Dan¹, CAO Yun^1,2, ZHENG Lin^1,2; 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

Keywords:: P. elliottii; PEG-6000; water stress; seed germination

CLC:: S718.43;S791.246

DOI:: -

Abstract:: 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.

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