Table 4.

The root angle (RA) (°) and the root surface area (SA) (cm²) after repeated drought and salt stresses (C, control; D, drought; S, salt).

T	Genotype	Root angle				Total root surface area
		1st	2nd	3rd	4th	1st	2nd	3rd	4th
C	Azeghar	75.4 ± 1.2b	110.1 ± 4.4a	124.8 ± 3.5a	118.4 ± 3.7a	51.7 ± 11.9a	81.4 ± 7.8a	256 ± 33a	297 ± 53b
C	Cham1	107.2 ± 8.3a	105.9 ± 5.9a	114.9 ± 8.1a	120.5 ± 9.2a	54 ± 17.4a	48.5 ± 11.8c	304 ± 28a	309 ± 23b
C	JK	82.3 ± 3.8b	90.1 ± 3.3b	101.8 ± 1.6b	93.3 ± 5.1b	45.8 ± 4.4a	57.7 ± 4.2bc	345 ± 56a	444 ± 37a
C	Sebatel	109.1 ± 12.1a	106.1 ± 2.3a	113.9 ± 8.7a	117.2 ± 1.8a	55.6 ± 8.4a	69.9 ± 11.6ab	264 ± 68a	296 ± 32b
D	Azeghar	102 ± 8.6ab	121.2 ± 9.1ab	108.4 ± 5.3b	111.7 ± 3.7b	53.7 ± 15.7a	83.7 ± 8ab	83 ± 26b	124 ± 23b
D	Cham1	85.5 ± 9.3bc	115.5 ± 9b	121.1 ± 0.6a	125.4 ± 2.7a	68 ± 3.6a	92.2 ± 12ab	122 ± 24a	133 ± 13b
D	JK	88 ± 2.9c	119.9 ± 4.2ab	105.4 ± 4.1b	110.6 ± 2.7b	69.5 ± 9.3a	110.5 ± 5.6a	156 ± 15a	254 ± 32a
D	Sebatel	111.7 ± 7.4a	132.1 ± 4.9a	121.1 ± 1.4a	109.6 ± 6.7b	64.8 ± 2.2a	79.1 ± 27b	124 ± 14a	125 ± 19b
S	Azeghar	99.2 ± 3.4a	117 ± 7.9a	127.7 ± 1.4a	125.4 ± 6.8a	45 ± 9a	115 ± 14.1a	55 ± 33b	71 ± 12b
S	Cham1	93 ± 3.3a	102.9 ± 1.9b	120.9 ± 3.9ab	122.6 ± 5.3a	39.1 ± 8.3a	65.5 ± 0b	52 ± 5b	52 ± 24b
S	JK	67.2 ± 1.8b	95.4 ± 4.3b	104 ± 3.1c	118.8 ± 3.5a	47.1 ± 1.2a	109.1 ± 28.5a	98 ± 22ab	116 ± 26a
S	Sebatel	90.6 ± 7.6a	115.3 ± 2.7a	116.1 ± 11.6b	121.9 ± 6.3a	48.8 ± 6.1a	95.3 ± 20.3ab	154 ± 52a	83 ± 9ab
	Genotype (G)	***	***	***	***	ns	*	**	***
	Treatments (T)	*	***	***	***	***	***	***	***
	G × T	***	*	**	***	ns	*	ns	*

Values are means ± standard deviations (n = 3). Means with the same letter in each column, within treatment, are not significantly different between genotypes (p < 0.05) (LSD test).

ns, not significant; LSD, least significant difference.

*, **, and *** indicate significance at p < 0.05, p < 0.01, and p < 0.001 levels, respectively.