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Article

Water-Soluble Carbon Nanoparticles Improve Seed Germination and Post-Germination Growth of Lettuce under Salinity Stress

1
Mid-Florida Research and Education Center, University of Florida, Apopka, FL 32703, USA
2
Department of Environmental Horticulture, University of Florida, Gainesville, FL 32611, USA
3
College of Horticulture, Northwest A&F University, Yangling 712100, China
4
Department of Plant Science, University of California, Davis, CA 95616, USA
*
Author to whom correspondence should be addressed.
Agronomy 2020, 10(8), 1192; https://doi.org/10.3390/agronomy10081192
Received: 11 May 2020 / Revised: 6 August 2020 / Accepted: 7 August 2020 / Published: 13 August 2020
Seed germination is a critical developmental phase for seedling establishment and crop production. Increasing salinity stress associated with climatic change can pose a challenge for seed germination and stand establishment of many crops including lettuce. Here, we show that water soluble carbon nanoparticles (CNPs) can significantly promote seed germination without affecting seedling growth. Twenty-seven varieties of lettuce (Lactuca sativa) were screened for sensitivity to germination in 150 and 200 mM NaCl, and six salt-sensitive varieties (Little Gem, Parris Island, Breen, Butter Crunch, Muir, and Jericho) were selected and primed with 0.3% soluble carbon nanoparticles. Pretreatment with CNPs significantly improved seed germination under 150 mM NaCl and high temperature. CNP treatment slightly inhibited the elongation of primary roots but promoted lateral root growth and accumulation of chlorophyll content of seedlings grown under salt stress. Despite different lettuce varieties exhibiting a distinct response to nanoparticle treatments, results from this study indicate that soluble nanoparticles can significantly improve lettuce seed germination under salinity stress, which provide fundamental evidence on the potential of nanoparticles in agricultural application to improve crop yield and quality under stressful conditions. View Full-Text
Keywords: lettuce; seed germination; salinity; nanoparticles lettuce; seed germination; salinity; nanoparticles
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MDPI and ACS Style

Baz, H.; Creech, M.; Chen, J.; Gong, H.; Bradford, K.; Huo, H. Water-Soluble Carbon Nanoparticles Improve Seed Germination and Post-Germination Growth of Lettuce under Salinity Stress. Agronomy 2020, 10, 1192. https://doi.org/10.3390/agronomy10081192

AMA Style

Baz H, Creech M, Chen J, Gong H, Bradford K, Huo H. Water-Soluble Carbon Nanoparticles Improve Seed Germination and Post-Germination Growth of Lettuce under Salinity Stress. Agronomy. 2020; 10(8):1192. https://doi.org/10.3390/agronomy10081192

Chicago/Turabian Style

Baz, Hanna, Matthew Creech, Jianjun Chen, Haijun Gong, Kent Bradford, and Heqiang Huo. 2020. "Water-Soluble Carbon Nanoparticles Improve Seed Germination and Post-Germination Growth of Lettuce under Salinity Stress" Agronomy 10, no. 8: 1192. https://doi.org/10.3390/agronomy10081192

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