Hygienic characteristics of radishes grown in soil contaminated with Stenotrophomonas maltophilia

Miceli, Alessandro; Martorana, Alessandra; Moschetti, Giancarlo; Settanni, Luca

doi:10.1186/s40538-015-0050-4

Chemical and Biological Technologies in Agriculture

Table 2 Agronomic and quality parameters of radish plants at harvest

From: Hygienic characteristics of radishes grown in soil contaminated with Stenotrophomonas maltophilia

Parameters	Trials
Parameters	ASS	ASSwS	AS	ASwR	nASS	nASSwS	nAS	nASwR
Leaves
Number (n. plant⁻¹)	5.0 ± 0.3a	4.8 ± 0.2a	4.8 ± 0.2a	4.7 ± 0.2a	4.6 ± 0.2ab	4.6 ± 0.2ab	4.5 ± 0.3ab	4.1 ± 0.2b
Fresh weight (g)	10.5 ± 0.6c	10.7 ± 0.5c	10.3 ± 0.4c	10.8 ± 0.5c	14.4 ± 0.8b	17.6 ± 0.9a	10.3 ± 0.5c	10.3 ± 0.6c
Dry matter (%)	6.5 ± 0.3a	7.1 ± 0.4a	7.1 ± 0.5a	7.1 ± 0.3a	7.3 ± 0.4a	7.2 ± 0.4a	6.8 ± 0.3a	6.7 ± 0.4a
Leaf area (cm²)	186.4 ± 8.7b	196.4 ± 9.3b	138.3 ± 6.9c	144.8 ± 7.2c	297.0 ± 16.9a	311.5 ± 14.6a	198.9 ± 9.7b	191.6 ± 9.8b
Roots
Length (cm)	31.5 ± 1.6ab	33.6 ± 1.8a	28.1 ± 1.4ac	29.1 ± 1.5ac	26.3 ± 1.5bc	23.9 ± 1.1c	27.6 ± 1.4ac	27.8 ± 1.6ac
Fresh weight (g)	1.06 ± 0.05a	1.04 ± 0.04a	0.91 ± 0.05a	0.8 ± 0.04a	0.49 ± 0.02b	0.50 ± 0.03b	0.53 ± 0.04b	0.40 ± 0.03b
Dry matter (%)	6.2 ± 0.3b	6.2 ± 0.4b	7.2 ± 0.5b	7.3 ± 0.4b	7.7 ± 0.4b	8.1 ± 0.5b	12.8 ± 0.6a	11.7 ± 0.5a
Radish
Fresh weight (g)	12.2 ± 0.7b	10.0 ± 0.6b	10.1 ± 0.5b	12.0 ± 0.6b	25.0 ± 1.4a	23.9 ± 1.2a	15.3 ± 0.8b	14.8 ± 0.9b
Dry matter (%)	3.9 ± 0.2a	3.9 ± 0.3a	3.9 ± 0.4a	3.8 ± 0.2a	4.1 ± 0.3a	4.3 ± 0.5a	4.3 ± 0.2a	4.5 ± 0.4a
Diameter (mm)	24.9 ± 1.2b	23.4 ± 1.2b	23.1 ± 1.3b	24.6 ± 1.2b	34.0 ± 1.7a	31.8 ± 1.6a	25.5 ± 1.3b	26.6 ± 1.5b
Firmness (N)	39.1 ± 2.1a	38.6 ± .0a	36.2 ± 1.8a	37.1 ± 1.9a	30.3 ± 1.7b	29.9 ± 1.5b	31.2 ± 1.6b	30.2 ± 1.5b
L*	32.9 ± 1.7c	34.0 ± 1.6c	35.2 ± 1.8ac	34.2 ± 1.7bc	36.8 ± 1.9ac	38.7 ± 1.8ab	39.6 ± 2.0a	39.0 ± 2.0a
a*	45.8 ± 2.3ab	46.0 ± 2.4ab	42.5 ± 2.1b	43.5 ± 2.2b	47.9 ± 2.6a	50.3 ± 2.5a	49.4 ± 2.9a	49.4 ± 2.5a
b*	20.6 ± 1.0ab	20.7 ± 1.2ab	19.2 ± 1.0b	18.8 ± 0.9b	21.0 ± 1.1ab	23.2 ± 1.2ab	25.1 ± 1.3a	25.0 ± 1.4a
SSC (Brix)	2.2 ± 0.1b	2.2 ± 0.1b	2.8 ± 0.1a	2.6 ± 0.2ab	2.3 ± 0.1b	2.3 ± 0.2b	2.3 ± 0.1b	2.3 ± 0.1b
N–NO₃ ⁻ (mg kg⁻¹ FW)	644.6 ± 33.2a	580.3 ± 29.8a	583.7 ± 29.2a	563.7 ± 28.2a	522.7 ± 25.1a	543.4 ± 27.8a	567.0 ± 28.4a	599.2 ± 30.2a
Ascorbic acid (mg kg⁻¹ FW)	205.0 ± 10.3ab	197.0 ± 9.9ab	220.0 ± 11.0a	206.0 ± 10.3ab	182.0 ± 9.1ab	166.0 ± 8.3ab	132.0 ± 6.6b	192.0 ± 9.6ab
Plant WUE (g DM kg⁻¹ H₂O)	2.03 ± 0.11b	2.03 ± 0.10b	2.0 ± 0.11b	2.14 ± 0.12b	3.51 ± 0.18a	3.88 ± 0.16a	2.39 ± 0.12b	2.33 ± 0.13b

Data within a row followed by the same letter are not significantly different according to Tukey–Kramer’s multiple range test at P < 0.05
Percentages were subjected to angular transformation prior to perform statistical analysis

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