Saint Joseph's University Institute for Environmental Stewardship.

McCann, M. P. ; Springer, C.

Technical Information Center Oak Ridge Tennessee

关键词: Environmental management;    Biofuels;    Biomass;    Climate change;    Grasses;   

RP-ID  :  DE141134324

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The major objective of the study was to understand the physiological and growth responses of the important biofuel grass species, Panicum virgatum (switch grass) to simulated changes in precipitation expected for the Central Plains region of the United States. Population level adaptation to broad-scale regional climates or within-population variation in genome size of this genetically and phenotypically diverse C4 grass species may influence the responses to future precipitation variability associated with climate change. Therefore, we investigated switchgrass responses to water variability between natural populations collected across latitudinal gradient and populations. P. virgatum plants from natural populations originating from Kansas, Oklahoma, and Texas received frequent, small precipitation events (ambient) or infrequent, large precipitation events (altered) to simulate contrasting rainfall variability expected from this region.