Table 1.

Shoot and root length/weight and adventitious root number of 5-day-old barley seedlings after CAPP treatment.

CAPP Application (s)	Average Shoot Length (mm)	Average Shoot Weight (mg)	Average Root Length (mm)	Average Root Weight (mg)	Adventitious Root Number
C (0)	11.3 ± 0.43 d	81.9 ± 17.2 e	6.21 ± 0.96 e	69.5 ± 16.1 c	6.66 ± 0.59 d
O10	10.2 ± 1.11 b	81.1 ± 19.3 de	7.49 ± 1.33 f	82.7 ± 22.2 de	6.40 ± 0.70 abcd
O20	10.3 ± 1.91 bc	79.4 ± 23.1 cde	5.38 ± 1.13 bcd	93.0 ± 23.6 e	6.18 ± 0.60 abc
O30	11.3 ± 0.88 cd	97.5 ± 21.7 e	4.17 ± 1.11 a	97.0 ± 15.7 e	5.85 ± 0.69 a
O60	5.0 ± 1.05 a	63.2 ± 13.3 ab	4.61 ± 1.32 ab	58.8 ± 17.2 ab	6.47 ± 0.68 bcd
O180	4.9 ± 0.98 a	65.0 ± 14.3 abc	5.12 ± 1.29 bcd	48.8 ± 15.5 a	6.17 ± 0.85 ab
A10	11.3 ± 1.11 d	86.4 ± 22.6 ef	6.55 ± 0.84 ef	84.7 ± 24.7 de	6.60 ± 0.70 bcd
A20	11.0 ± 1.55 bcd	87.3 ± 22.3 ef	6.48 ± 0.77 e	68.5 ± 19.6 bc	6.90 ± 0.57 d
A30	10.9 ± 1.01 bcd	87.8 ± 22.2 ef	4.70 ± 0.78 abcd	75.0 ± 21.4 cd	6.75 ± 0.46 bcd
A60	5.3 ± 1.01 a	54.7 ± 17.0 a	4.78 ± 0.99 abc	54.2 ± 17.3 ab	6.67 ± 0.93 d
N10	11.5 ± 0.63 d	80.1 ± 18.6 de	5.51 ± 1.25 c	76.4 ± 18.5 cd	6.51 ± 0.76 bcd
N20	10.9 ± 1.64 bcd	72.5 ± 17.7 bcd	5.45 ± 0.59 cd	53.3 ± 17.6 a	6.65 ± 0.85 cd

Variants: C—control/untreated barley grains; O10—O300: barley grains treated with plasma generated in an oxygen atmosphere for 10, 20, 30, 60, 180 or 300 s; A10—A300: barley grains treated with plasma generated in ambient air for 10, 20, 30, 60, 180 or 300 s; N10—N300 barley grains treated with plasma generated in a nitrogen atmosphere for 10, 20, 30, 60, 180 or 300 s. Different letters indicate significant difference at p-value < 0.05, data represent means of ten experimental runs (one run represents 50 grains per variant, n = 500) ± SD according to Tukey’s HSD test.