. 2018 May 29;9:716. doi: 10.3389/fpls.2018.00716

Table 1.

Effects of Si priming on morphological parameters of roots in alfalfa seedlings under alkaline stress.

Na₂CO₃ (mM)		Fresh weight (mg)	Dry weight (mg)	Root length (cm)	Surface area (cm²)	Average diameter (mm)	Volume (cm³)	Number of forks
0	-Si	353.54 ± 34.28^a	47.58 ± 3.94^a	1343 ± 159^a	223.61 ± 22.81^a	0.53 ± 0.01^c	2.97 ± 0.27^b	3848 ± 382^a
	+Si	346.31 ± 29.72^a	31.75 ± 2.69^bc	1275 ± 234^a	212.60 ± 37.66^a	0.53 ± 0.01^b	2.83 ± 0.49^ab	4846 ± 551^a
25	-Si	331.49 ± 10.11^a	23.83 ± 1.30^c	1201 ± 13^a	182.36 ± 6.62^a	0.48 ± 0.02^b	2.22 ± 0.15^ab	4510 ± 797^a
	+Si	423.20 ± 42.55^a	41.51 ± 8.54^ab	1266 ± 115^a	230.75 ± 19.74^a	0.58 ± 0.01^a	3.35 ± 0.27^a	5595 ± 774^a

-Si, pretreatment without Si; +Si, pretreatment with Si. Values are means ± SE, n = 25. Different letters denote significant difference (P < 0.05) based on Duncan’s test.