Effects of Different Temperature Treatments on Seed Germination and Seedling Growth of Rorippa sylvestris
Hai ling Yan
College of Biotechnology, Shenyang Agricultural University, Shenyang 110161, China.
Gui Li Shi
College of Biotechnology, Shenyang Agricultural University, Shenyang 110161, China.
Wen Peng Shi
College of Biotechnology, Shenyang Agricultural University, Shenyang 110161, China.
Mei Ting Jin
College of Biotechnology, Shenyang Agricultural University, Shenyang 110161, China.
Yi Nuo Sun
College of Biotechnology, Shenyang Agricultural University, Shenyang 110161, China.
Bo Qu
College of Biotechnology, Shenyang Agricultural University, Shenyang 110161, China and Key Laboratory of Global Change and Biological Invasion in Liaoning Province, Shenyang 110161, Liaoning Province, Shenyang 110161, China.
Mei Ni Shao *
College of Biotechnology, Shenyang Agricultural University, Shenyang 110161, China and Key Laboratory of Global Change and Biological Invasion in Liaoning Province, Shenyang 110161, Liaoning Province, Shenyang 110161, China.
*Author to whom correspondence should be addressed.
Abstract
Temperature is one of the important conditions for plant growth, and an important factor affecting the establishment and spread of invasive plants. In this study, the northern perennial invasive plant (Rorippa sylvestris) was taken as an example. By comparing the seed germination rate, germination potential, germination index and vigor index, the total number of leaves, root length, root length, vigor index, leaves of seedings, seedling biomass and root- shoot ratio under different temperature treatments (15, 20, 25, 30, 35, 40℃), the subordinate function was used to compare the temperature tolerance of R. sylvestris in seed germination. sylvestris in seed germination and seedling growth. To study the response and tolerance of seed germination and seedling growth of invasive R. sylvestris to different temperatures, the subordinate function was used to compare the temperature tolerance of R. sylvestris in seed germination and seedling growth. The results showed that high temperature promoted seed germination of R. sylvestris and limited radicle growth, and it had the most tolerance at different temperatures. The results showed that high temperature promoted seed germination of R. sylvestris and limited radicle growth, and it had the strongest tolerance at 35℃. Lower temperature was more beneficial to material accumulation of seedlings, and the tolerance of R. sylvestris was more favorable. The results provide theoretical basis for revealing the diffusion and invasion mechanism of R. sylvestris.
Keywords: Rorippa sylvestris, temperature, tolerance, membership function method
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References
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