Table 2 Effect of triacontanol on leaf water relations of four cucumber genotypes under normal and salt stress conditions.

From: Triacontanol modulates salt stress tolerance in cucumber by altering the physiological and biochemical status of plant cells

Treatments

Green long

Marketmore

Summer green

20252

Green long

Marketmore

Summer green

20252

 

Water potential (Ψw) (− MPa)

Osmotic potential (Ψπ) (− MPa)

Control

0.44 ± 0.04def

0.44 ± 0.03ef

0.54 ± 0.04cde

0.46 ± 0.05def

0.72 ± 0.04efg

0.62 ± 0.04fg

0.84 ± 0.05cde

0.77 ± 0.05efg

Salinity (50 mmol L−1)

0.73 ± 0.05bcd

0.64 ± 0.04bcd

1.03 ± 0.10a

0.85 ± 0.10ab

1.08 ± 0.04cde

0.99 ± 0.06cdef

1.67 ± 0.10a

1.50 ± 0.14ab

Triacontanol spray + non-saline

0.38 ± 0.05ef

0.39 ± 0.05ef

0.57 ± 0.03bcd

0.35 ± 0.03f

0.64 ± 0.05fg

0.54 ± 0.03g

0.80 ± 0.05cdef

0.69 ± 0.04efg

Triacontanol spray + salinity

0.63 ± 0.05bcd

0.54 ± 0.04cde

0.84 ± 0.05ab

0.75 ± 0.08abc

0.95 ± 0.10cdef

0.88 ± 0.05cdef

1.24 ± 0.13bc

1.18 ± 0.16bcd

 

Turgor potential (Ψp) (MPa)

Leaf relative water contents (%)

Control

0.39 ± 0.02bcd

0.35 ± 0.01cde

0.32 ± 0.01def

0.33 ± 0.01def

77.5 ± 3.93ab

81.25 ± 2.21a

73.25 ± 5.11abc

75 ± 3.87abc

Salinity (50 mmol L−1)

0.29 ± 0.01fg

0.20 ± 0.02ghi

0.16 ± 0.01i

0.18 ± 0.00hi

59.5 ± 4.11bcd

58 ± 2.48cde

46 ± 5.85e

43.75 ± 5.07e

Triacontanol spray + non-saline

0.51 ± 0.02a

0.45 ± 0.01ab

0.41 ± 0.01bcd

0.43 ± 0.01abc

81 ± 1.47a

83.75 ± 1.89a

75.25 ± 0.85abc

77.25 ± 1.11ab

Triacontanol spray + salinity

0.39 ± 0.019bcd

0.30 ± 0.023ef

0.26 ± 0.019 fgh

0.28 ± 0.012fg

67.25 ± 3.64abc

70.75 ± 2.46abcd

58.5 ± 5.11cde

55.5 ± 7.27de

  1. Data represent the means ± SE of four repeats.
  2. Means with different letters are significantly different at P ≤ 0.05 according to Tukey’s HSD test (Salt tolerant, Green long and Marketmore) (Salt sensitive Summer green and 20252).
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