Foliar application of amino acid biostimulants increased growth and antioxidant activity of Epipremnum aureum

Figures & data

Table 1. Basic physical and chemical properties of plant culture substrates.

Project	Measured value
Aspect	A powdery product with a uniform mixture of various materials
Mass fraction of organic matter	99%
Total nutrient (N + P2O5+K2O) mass fraction	1.6%
pH	5.4
Conductivity	0.5 (mS·cm^−1)
Total As	1.1 (mg·kg^−1)
Total Hg	<0.5 (mg·kg^−1)
Total Pb	1.7 (mg·kg^−1)
Total Cd	<0.5 (mg·kg^−1)
Total Cr	1.3 (mg·kg^−1)
Mortality of ascarid egg	100%
Number of fecal coliforms	75 (PCS·g^−1)

Table 2. Amino acid type and content.

Types of amino acids	Amino acids content(mg·L^−1)
Leucine	43.30
Aspartic acid	38.80
Glutamic acid	23.10
Arginine	12.60
Isoleucine	16.30
Proline	5.40
Tryptophan	4.40
Histidine	2.80
Alanine	3.30

Table 3. Element type and content.

Element types	Element content(mg·L^−1)
N	207.30
K	160.30
P	93.70
Ca^2+	93.94
Mg^2+	37.23
Fe^2+	26.21
Mn^2+	0.81
Zn^2+	0.62
Cu^2+	0.04
Mo^2+	0.02
B^+	0.01

Table 4. The Impact of Amino Acid Biostimulants on the Growth of Epipremnum aureum.

Peer group	Petiole length(cm)	Leaf area(cm^2)	Conductivity(%)	Chlorophyll(mg·L^−1)
T0	13.03 ± 0.45c	39.64 ± 0.98c	13.17 ± 1.02a	9.76 ± 0.18d
T1	14.40 ± 0.67b	39.46 ± 1.86c	8.07 ± 0.34b	10.01 ± 0.57 cd
T2	14.59 ± 0.18ab	44.02 ± 0.61b	8.74 ± 0.53b	12.12 ± 0.92b
T3	14.29 ± 0.49b	38.54 ± 1.32c	8.18 ± 0.58b	12.25 ± 0.68b
T4	15.11 ± 0.50a	46.25 ± 1.16a	7.07 ± 1.16c	14.10 ± 0.85a
T5	13.13 ± 0.50c	46.78 ± 1.21a	8.52 ± 0.58b	10.80 ± 0.54c

The error is the standard deviation (n = 5), and the same letter after the error indicates no significant difference at the 0.05 probability level.

Figure 1. The Impact of Amino Acid Biostimulants on the Growth of Epipremnum aureum.

(The error is the standard deviation (n = 5), and the same letter after the error indicates no significant difference at the 0.05 probability level), (A): aboveground fresh weight, (B) aboveground dry weight, (C) underground fresh weight, (D) underground dry weight.

Figure 2. The effect of amino acid biostimulants on the antioxidant properties of Epipremnum aureum.

(The error bars represent the standard deviation (n = 5), and the same letters on the error bars indicate no significant difference at the 0.05 probability level.) T-AOC: total antioxidant capacity (A), WSS: soluble sugar (B), MDA: malondialdehyde (C), TP: total protein (D).

Figure 3. Antioxidant enzyme activity of Epipremnum aureum.

(The error bars represent the standard deviation (n = 5), and the same letters on the error bars indicate no significant difference at the 0.05 probability level.) T-SOD: total superoxide dismutase (A), CAT: catalase (B), POD: peroxidase (C).