Table 2 Impact of alleviation treatments on growth parameters of chilling-stressed coriander plants at the vegetative stage. Coriander control plants and chilling-stressed ones were subjected to pot. Silicate (80 mM), HA (50 mgl^− 1) or γ-radiation (50 Gy). The shown data was extracted by using 3 biological and 3 technical replicates. Each biological replicate is comprised of 10 plants (one pot). The mean value of each biological replicate represents the value of one technical replicate. The readings of the 3 technical replicates were recorded. The mean value of the technical replicates was used to calculate ±SE. Also, the least significant differences (LSD) at 5% level were calculated to compare the means of different treatments according to Snedecor and Cochran [92]. The values with the same letter are not significantly different (P<0.05). The raw data set of the technical replicates was attached as a supplementary file

Control

11.57 ± 0.23^d

16.00 ± 0.57^e

5.67 ± 0.33^a

30.53 ± 0.34^e

0.55 ± 0.06 ^e

0.09 ± 0.004^bc

6.43 ± 0.47^bc

0.046 ± 0.005^f

0.012 ± 0.001^c

Chilling (6°C ± 0.5)

10.23 ± 0.14^e

10.67 ± 0.88^f

3.67 ± 0.33^b

14.28 ± 0.7^f

0.28 ± 0.02^e

0.04 ± 0.003^c

6.20 ± 0.15^c

0.032 ± 0.002^g

0.006 ± 0.0005^d

Pot. silicate (80 mM)

17.40 ± 0.3^a

27.67 ± 1.4^cd

6.00 ± 0.57^a

94.27 ± 0.83^b

0.74 ± 0.08^de

0.13 ± 0.003^bc

6.63 ± 0.3^bc

0.064 ± 0.002^e

0.016 ± 0.002^c

Humic acid (50 mg l⁻¹)

18.10 ± 0.5^a

34.33 ± 0.9 ^a

7.00 ± 0.57^a

106.12 ± 2^a

2.034 ± 0.014^a

0.21 ± 0.002^ab

7.73 ± 0.08^a

0.131 ± 0.006^a

0.024 ± 0.0004^a

γ- rays (50 Gy)

17.57 ± 0.23^a

32.67 ± 1.5^ab

7.00 ± 0.57^a

89.64 ± 1.4^b

1.18 ± 0.16 ^bc

0.20 ± 0.008^ab

7.37 ± 0.4^ab

0.126 ± 0.01^a

0.022 ± 0.003^a

Chilling + Pot. silicate

14.33 ± 0.44^c

30.00 ± 0.57d

6.33 ± 0.66^a

57.39 ± 1.1^d

1.22 ± 0.14^bc

0.30 ± 0.11^bc

7.40 ± 0.3^ab

0.089 ± 0.006^d

0.014 ± 0.0012^c

Chilling + Humic acid

15.77 ± 0.15^b

23.67 ± 2.9^bc

6.00 ± 0.67^a

71.82 ± 1.5^c

0.97 ± 0.013 ^b

0.12 ± 0.003^a

7.97 ± 0.4^a

0.106 ± 0.004^b

0.022 ± 0.0004^a

Chilling + γ- rays

15.50 ± 0.28^b

25.00 ± 0.57^d

7.00 ± 0.57^a

59.34 ± 3.3^d

1.23 ± 0.05^cd

0.17 ± 0.007^abc

6.67 ± 0.24^bc

0.096 ± 0.005^c

0.0164 ± 0.0015^bc

LSD at 0.05

0.877

4.227

1.598

4.744

0.2597

0.136

0.994

0.0055

0.0055