Research Article

2,4-Dichlorophenoxyacetic Acid Derived Schiff Base and Its Lanthanide(III) Complexes: Synthesis, Characterization, Spectroscopic Studies, and Plant Growth Activity

Table 4

Plant growth activity on wheat seeds.

Sl. no.TreatmentsGermination percentageRoot length
(cm)
Shoot length
(cm)

1 × 10−5 M

1 Group 1**10018.60 ± 1.89fghi16.14 ± 0.56bc*
2Group 297.6018.08 ± 1.95ghi16.03 ± 0.53bc
3Group 380.0017.87 ± 2.88hi15.55 ± 1.67c
4Group 485.0020.97 ± 2.37cd16.31 ± 1.48bc
5Group 576.0016.82 ± 1.29i13.09 ± 1.91e
6Group 680.5014.77 ± 0.92j13.56 ± 2.47de

1 × 10−6 M

1Group 198.5018.04 ± 0.92ghi16.55 ± 2.03bc
2Group 298.0017.91 ± 2.63hi16.28 ± 1.63c
3Group 398.6021.35 ± 1.30c17.06 ± 2.22bc
4Group 498.0020.05 ± 2.14cdefg16.84 ± 2.15bc
5Group 510025.70 ± 1.25b18.10 ± 2.23b
6Group 698.5028.28 ± 0.99a20.06 ± 1.22a

1 × 10−7 M

1Group 110018.90 ± 2.51efgh15.98 ± 2.04bc
2Group 299.0018.82 ± 3.08efghi16.17 ± 2.94bc
3Group 398.0019.32 ± 0.73defgh15.27 ± 2.52cd
4Group 496.0020.26 ± 2.37cdef16.92 ± 1.77bc
5Group 598.5020.74 ± 1.83cde16.48 ± 3.17bc
6Group 698.0021.78 ± 2.63c16.24 ± 1.13bc

Values are the mean of triplicates. Mean values followed by different letters are significantly different within a row or column at 5% probability level; that is, α = 0.05 ( ) according to Duncan statistics.
Group 1: water, Group 2: DMSO and water mixture, Group 3: 2,4-D, Group 4: lanthanum nitrate, Group 5: HL, Group 6: La (III) complex.