Citrulline Is an Important Biochemical Indicator in Tolerance to Saline and Drought Stresses in Melon
Table 3
The total amino acid in the leaves of melon genotypes exposed to 250 mM NaCl salt and 45 mM PEG (−1.0 MPa) drought stresses (mol gDW−1).
Treatment
Genotype
38 DAS, 3 days in stress
41 DAS, 6 days in stress
44 DAS, 9 days in stress
47 DAS, 12 days in stress
Mean of treatments
Control
CU 52
10.47 ± 0.1
10.22 ± 0.8rs
13.42 ± 0.4
15.90 ± 0.1
14.06
CU 94
8.48 ± 0.5s
11.14 ± 9.9
12.23 ± 7.2
13.41 ± 1.4
CU 196
11.43 ± 2.2
18.28 ± 8.9
19.66 ±1.9
22.36 ± 0.1
CU 280
13.45 ± 1.6
11.55 ± 0.7
14.55 ± 0.4
18.54 ± 1.0
Salt
CU 52
13.45 ± 0.3
15.08 ± 0.1
15.63 ± 0.3
23.94 ± 0.7
19.30
CU 94
9.25 ± 1.5d
13.46 ± 6.3
15.75 ± 3.5
16.63 ± 3.1
CU 196
17.85 ± 4.6
25.59 ± 8.5
25.79 ± 3.4
28.43 ± 2.0
CU 280
12.11 ± 0.9
20.11 ± 0.4
22.82 ± 2.1
28.75 ± 2.9ab
Drought
CU 52
19.77 ± 0.4
10.23 ± 2.0rs
18.57 ± 0.4
21.73 ± 1.5
21.61
CU 94
11.23 ± 2.4
20.17 ± 4.3
23.72 ± 10.5
24.56 ± 7.0
CU 196
11.23 ± 0.4
28.95 ± 4.8ab
28.51 ± 2.3
27.80 ± 4.8
CU 280
14.58 ± 1.3
22.15 ± 6.4
24.85 ± 2.7
31.09 ± 1.6a
Mean of times
13.67
17.24
19.62
22.75
Mean of genotypes
CU 52
CU 94
CU 196
CU 280
15.54
15.35
22.86
19.54
DAS: days after sowing. Data shown were means of 3 independent plants (replicates). Data in the table bearing the same letter are not significant at 5% probability. Differing genotype responses to salt and drought stresses: CU 52 sensitive, CU 94 sensitive, CU 196 tolerant, and CU 280 moderately tolerant. Significance of interactions: Genotype, Treatment, Time, Genotype × Time; *Genotype × Treatment; **Genotype × Treatment × Time; Treatment × Time. The a–s letters are showed statistical groups.
