Table 1.

Changes in peanut leaf tissue structures during the seedling stage under drought stress.

Drought Stress (h)	Leaf Thickness (μm)		Palisade Tissue Thickness (μm)		Spongy Tissue Thickness (μm)		Ratio of Palisade to Spongy Tissue
	HY22	FH18	HY22	FH18	HY22	FH18	HY22	FH18
0	341.94 ± 8.72 a	358.82 ± 27.12 a	153.33 ± 2.57 c	150.56 ± 2.29 c	66.04 ± 2.10 a	62.43 ± 2.01 a	2.32 ± 0.09 c	2.41 ± 0.11 c
9	325.38 ± 10.42 ab	323.78 ± 8.80 ab	172.55 ± 2.35 a	166.58 ± 1.44 a	58.37 ± 1.21 c	58.23 ± 0.75 b	2.96 ± 0.05 a	2.86 ± 0.04 a
12	305.88 ± 15.76 b	293.70 ± 10.80 b	166.76 ± 1.42 b	159.87 ± 1.47 b	61.62 ± 0.74 b	61.29 ± 0.91 ab	2.71 ± 0.05 b	2.61 ± 0.02 b

Note: Different lowercase letters in the same column for each index indicate significant differences between samples (p < 0.05); mean ± standard error. “HY22” refers to the drought-tolerant cultivar Huayu 22, and “FH18” denotes the drought-sensitive cultivar Fuhua 18.