Elevated N Supply Reduces the Inhibition of Growth and Photosynthesis Caused by Salinity in the Bioenergy Plant Hybrid Pennisetum

Abstract:

Hybrid Pennisetum (Pennisetum americanum × P. purpureum) is a popular bioenergy grass that could also serve as forage for livestock production. In a pot experiment, salinity inhibited hybrid Pennisetum growth, photosynthesis, soluble sugar content, and NR activity; decreased K⁺ content; and increased Na⁺ content. These adverse effects of soil salinity were reduced, however, by applications of NO₃^--N up to 5 mmol·L^-1; higher applications of NO₃^--N increased soil salinity problems. These findings will be useful for the production of hybrid Pennisetum as a biofuel on saline land.

• Periodical: Advanced Materials Research (Volumes 724-725)
• Pages: 443-451
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.724-725.443
• Online since: August 2013
• Authors: Min Chen, Dian Wang, Jie Song, Tian Shu Chen, Na Sui, Bao Shan Wang
• Keywords: Hybrid Pennisetum, Ion Balance, Nitrate, Photosynthesis, Salinity

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