Morphological and physiological responses of Heteropogon contortus to drought stress in a dry-hot valley

Botanical Studies

Table 1 Shoot mass ratio (SMR), root mass ratio (RMR) and root/shoot ratio (R/S) of Heteropogon contortus at different stages under four different water levels

Levels	Initial stage			Mid stage			Late stage
Levels	SMR	RMR	R/S	SMR	RMR	R/S	SMR	RMR	R/S
CK	67.33 ± 1.09a	32.67 ± 1.09a	48.60 ± 2.38a	64.84 ± 1.3a	35.14 ± 1.3c	54.35 ± 3.00c	68.25 ± 2.35a	31.75 ± 2.35c	47.03 ± 4.89b
LS	63.43 ± 3.59a	36.57 ± 3.59a	59.17 ± 6.88a	56 ± 2.54c	44 ± 2.54a	79.71 ± 8.41a	59.55 ± 1.7ab	40.45 ± 1.7bc	68.34 ± 4.83b
MS	71.22 ± 4.75a	28.78 ± 4.75a	41.76 ± 10.14a	62.27 ± 1.83ab	37.73 ± 1.83bc	61.00 ± 4.69bc	53.95 ± 1.74bc	46.05 ± 1.74ab	85.96 ± 6.27ab
SS	69.87 ± 0.54a	30.13 ± 0.54a	43.15 ± 1.11a	57.69 ± 0.73bc	42.31 ± 0.73ab	73.44 ± 2.22ab	45.56 ± 5c	54.44 ± 5a	127.90 ± 25.65a

Values are means ± standard errors of five replicates. Different lowercase letters in each column indicate significant difference among treatments at P ≤ 0.05