BMC Plant Biology

Table 1 Root traits of contrasting rice near-isogenic lines (NILS) grown in PVC pipes in greenhouse under stress and control conditions

From: Comparative analysis of root transcriptome profiles of two pairs of drought-tolerant and susceptible rice near-isogenic lines under different drought stress

		near-isogenic lines
Trait	Condition	IR77298-14-1-2-B			IR77298-5-6-B
		10	13	diff	18	11	diff
Maximum root length (cm)	well-water	51.50 ± 3.71	42.75 ± 3.71	ns	50.25 ± 3.71	39.00 ± 3.71	*
	drought stress	90.00 ± 4.65	79.75 ± 4.65	ns	75.00 ± 4.65	71.25 ± 4.65	ns
No. of roots per plants	well-water	231.13 ± 29.0	164.00 ± 29.0	ns	216.00 ± 29.0	164.13 ± 29.0	ns
	drought stress	115.50 ± 8.01	94.38 ± 8.01	*	112.75 ± 8.01	110.88 ± 8.01	ns
Root thickness (mm)	well-water	0.74 ± 0.05	0.76 ± 0.05	ns	0.82 ± 0.05	0.79 ± 0.05	ns
	drought stress	1.05 ± 0.07	0.85 ± 0.07	*	0.67 ± 0.07	0.74 ± 0.07	ns
Root volume (cm³)	well-water	6.03 ± 2.09	3.73 ± 2.41	ns	5.76 ± 2.09	3.26 ± 2.09	ns
	drought stress	2.84 ± 0.51	1.86 ± 0.51	ns	1.88 ± 0.51	1.76 ± 0.51	ns
Root dry weight (g)	well-water	3.20 ± 0.68	1.73 ± 0.78	ns	2.86 ± 0.68	1.51 ± 0.68	ns
	drought stress	1.44 ± 0.18	0.82 ± 0.18	**	0.98 ± 0.18	1.14 ± 0.18	ns

diff: shows the significant difference of pair of NIL, where *, ** Significant at p < 0.05 and 0.01 level respectively; ns non-significant,
well-water: is control condition with FTSW = 1.0, and drought stress: is drought stress treatment with FTSW = 0.2,
10: IR77298-14-1-2-B tolerant NIL i.e. IR77298-14-1-2-B-10; 13: IR77298-14-1-2-B susceptible NIL i.e. IR77298-14-1-2-B-13,
In this table, "drought stress" is 0.2 FTSW and "well-water" is control treatment. Data are mean of four replications.

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