Table 1.

Plants, treatments, and groups for sample collection.

Genotype	Collection time	Group	Sample #
Switchgrass clone # 5 (early senescence) ES SG	Before senescence	A	Sample #1
			Sample #2
			Sample #3
	After senescence	B	Sample #4
			Sample #5
			Sample #6
Switchgrass clone # 4 (late senescence) LS SG	Before senescence	C	Sample #7
			Sample #8
			Sample #9
	After senescence	D	Sample #10
			Sample #11
			Sample #12
Prairie cordgrass-ND (early senescence) ES PCG	Before senescence	E	Sample #13
			Sample #14
			Sample #15
	After senescence	F	Sample #16
			Sample #17
			Sample #18
Prairie cordgrass-SD (late senescence) LS PCG	Before senescence	G	Sample #19
			Sample #20
			Sample #21
	After senescence	H	Sample #22
			Sample #23
			Sample #24

Two genotypes of SG and two genotypes of PCG were selected with two treatments for each for sample collection. Samples were collected in triplicate.