Efficiency of phosphorus use by melon genotypes

Nascimento, Louize; Oliveira, Francisco de A. de; Silva, Daisy D. da; Tomaz, Francisco L. de S.; Nunes, Glauber H. de S.; Oliveira, Fábio H. T. de

doi:10.1590/1807-1929/agriambi.v27n1p9-17

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Articles • Rev. bras. eng. agríc. ambient. 27 (1) • Jan 2023 • https://doi.org/10.1590/1807-1929/agriambi.v27n1p9-17 copy

Efficiency of phosphorus use by melon genotypes¹ 1 Research developed at Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil

Eficiência de uso de fósforo por genótipos de meloeiro

Authorship SCIMAGO INSTITUTIONS RANKINGS

HIGHLIGHTS:

The plant characteristic that most contribute to the divergence between the genotypes is main branch length.

Under phosphorus restriction, the unimproved genotypes show greater efficiency of use and internal use of this nutrient.

The genotypes A-16, A-29, A-50, A-52 and ‘Trinity’ are efficient and responsive in the phosphorus restriction condition.

ABSTRACT

This study aimed to evaluate the efficiency of phosphorus use with melon genotypes cultivated in a hydroponic system. Ten melon genotypes were evaluated in solutions with and without phosphorus restriction. A randomized block design in a 10 × 2 factorial scheme was used, with five replicates. The following characteristics were evaluated: leaf number, stem diameter, main branch length, root system length, root system volume, chlorophyll, root and shoot phosphorus concentration ratio, total phosphorus, root and shoot dry matter ratio, total dry matter, and phosphorus use, acquisition, and internal utilization efficiencies. The existence of variability among genotypes was verified for all evaluated characteristics, except for chlorophyll. Genotypes A-16, A-29, A-50, A-52, and Trinity were classified as efficient and responsive in the phosphorus-restricted solution and are promising for breeding studies.

Key words:
Cucumis melo L.; phosphorus acquisition; plant breeding; plant nutrition; phosphorus response

Solution	Characteristic
Solution	NL	SD (cm)	MBL (cm)	RSL (cm)	RSV (cm³)
P+	26.90	7.62	71.15	48.33	40.25
P-	10.75	6.40	25.05	72.50	21.05
F (G × P)	115.37**	20.20**	104.46**	33.36**	39.02**
	RCI	P_(R/S) (mg per plant)	TP (mg per plant)	DM_(R/S) (g)	TDM (g)
P+	37.64	0.62	40.85	0.16	13.52
P-	36.92	0.90	12.05	0.32	3.07
F (G × P)	0.77^ns	40.45**	729.81**	150.53**	330.57**

Genotype	NL	SD	MBL	RSL	RSV (cm³)	RCI	P_(R/S)	TP	DM_(R/S)	TDM
Genotype	NL	(cm)			RSV (cm³)	RCI	(mg per plant)		(g)
Solution P+
‘Vereda’	22.50 b	7.20 b	70.25 c	46.75 a	31.25 b	37.38	0.61 b	48.43 a	0.13 b	8.38 c
‘GRC’	27.50 b	7.58 a	57.50 d	50.50 a	22.50 b	40.40	0.44 c	42.67 a	0.26 a	14.74 b
‘Aca’	20.50 b	8.25 a	53.50 d	47.25 a	51.25 a	33.79	0.64 b	46.31 a	0.14 b	11.54 c
‘GCC’	39.50 a	8.53 a	112.5 a	44.25 a	51.25 a	38.95	0.33 c	37.31 b	0.15 b	19.04 a
‘Trinity’	26.50 b	8.18 a	73.25 c	58.50 a	42.50 a	36.73	0.83 a	37.81 b	0.16 b	14.10 b
A-02	24.00 b	7.15 b	72.25 c	41.75 a	57.50 a	37.84	0.44 b	41.55 a	0.14 b	14.32 b
A-16	22.50 b	6.65 b	46.25 d	48.75 a	40.00 a	40.48	0.79 a	45.05 a	0.17 b	10.38 c
A-29	31.00 a	7.83 a	85.00 b	59.25 a	26.25 b	38.94	0.93 a	34.02 b	0.12 b	15.30 b
A-50	20.50 b	6.33 b	52.75 d	46.50 a	45.00 a	35.70	0.62 b	35.19 b	0.20 a	12.67 c
A-52	34.50 a	8.53 a	88.50 b	39.75 a	35.00 b	36.20	0.60 b	40.20 b	0.13 b	14.79 b
CV (%)	38.52	17.15	41.54	33.82	48.06	9.42	27.24	15.47	29.80	30.34
Solution P-
‘Vereda’	10.00 a	6.43 a	26.75 b	61.25 b	15.00 b	38.06	0.40 b	19.69 a	0.33 b	2.50 b
‘GRC’	8.25 b	6.38 a	23.00 b	61.75 b	12.50 b	41.79	1.03 a	11.61 b	0.34 b	2.09 b
‘Aca’	5.00 b	6.83 a	20.75 b	49.00 b	17.50 b	35.71	0.90 a	12.34 b	0.61 a	2.06 b
‘GCC’	8.75 b	6.60 a	41.75 a	69.00 b	25.00 a	33.84	0.77 a	10.90 b	0.35 b	2.54 b
‘Trinity’	9.25 b	6.78 a	19.75 b	67.00 b	21.75 b	36.19	1.20 a	10.83 b	0.26 c	3.05 b
A-02	12.50 a	6.55 a	16.25 b	72.25 b	22.50 b	36.06	0.84 a	11.07 b	0.26 c	3.25 b
A-16	10.50 a	5.55 b	15.75 b	92.75 a	22.50 b	39.20	1.01 a	14.03 b	0.17 c	3.54 a
A-29	14.25 a	6.65 a	26.75 b	80.00 a	21.25 b	35.69	1.04 a	11.26 b	0.24 c	4.07 a
A-50	13.25 a	5.25 b	17.50 b	89.25 a	25.00 a	32.58	0.98 a	10.51 b	0.34 b	3.59 a
A-52	15.75 a	7.05 a	42.25 a	82.75 a	27.50 a	40.08	0.80 a	8.24 b	0.25 c	3.99 a
CV (%)	19.12	14.63	27.45	28.77	30.68	9.87	27.02	14.50	20.24	22.70

Character	S_j (%)
Character	Solution P+	Solution P-
Number of leaves (NL)	6.08	2.76
Stem diameter (SD)	0.09	0.09
Main branch length (MBL)	58.01	25.35
Root system length (RSL)	6.17	58.81
Root system volume (RSV)	19.90	5.94
Relative chlorophyll index (RCI)	0.68	2.16
Root and shoot phosphorus concentration ratio [P_(R/S)]	1.76	0.10
Total phosphorus (TP)	0.52	1.77
Root and shoot dry matter ratio [DM_(R/S)]	1.40	0.23
Total dry matter (TDM)	3.51	2.49

Genotype	PUE		PAE		PIUE
Genotype	P+	P-	P+	P-	P+	P-
‘Vereda’	36.69 b	34.76 b	0.52 a	0.29 a	61.27 c	283.65 b
‘GRC’	34.91 b	28.99 b	0.43 b	0.13 b	66.79 c	234.18 b
‘Aca’	30.71 b	27.68 b	0.47 a	0.14 b	62.03 c	208.62 b
‘GCC’	47.40 a	39.52 b	0.51 a	0.12 b	121.07 a	271.84 b
‘Trinity’	37.72 b	44.76 a	0.46 a	0.14 b	78.16 b	316.16 a
A-02	38.64 b	50.49 a	0.34 b	0.14 b	77.44 b	323.16 a
A-16	30.03 b	49.20 a	0.40 b	0.18 b	73.16 b	282.75 b
A-29	48.84 a	62.50 a	0.53 a	0.20 b	106.67 a	312.19 a
A-50	32.29 b	49.83 a	0.44 b	0.15 b	85.28 b	265.53 b
A-52	41.95 b	55.42 a	0.47 a	0.17 b	88.80 b	378.32 a
P+	37.47		0.46		81.33
P-	43.08		0.17		277.56
F (G × P)	0.27^ns		0.00^ns		7.18**

Character	(SQ_Gen)	Contribution of X_i for (SQ_Y)	r_(XiY)	(S_Xi/S_Y)
Solution (P+)
Acquisition efficiency (X₁)	0.0456	31.15	0.68	0.45
Utilization efficiency (X₂)	0.1013	68.85	0.90	0.76
Use efficiency (Y)	0.1469
Solution (P-)
Acquisition efficiency (X₁)	0.1262	66.08	0.87	0.68
Utilization efficiency (X₂)	0.0648	33.92	0.67	0.90
Use efficiency (Y)	0.1910

Unidade Acadêmica de Engenharia Agrícola Unidade Acadêmica de Engenharia Agrícola, UFCG, Av. Aprígio Veloso 882, Bodocongó, Bloco CM, 1º andar, CEP 58429-140, Campina Grande, PB, Brasil, Tel. +55 83 2101 1056 - Campina Grande - PB - Brazil
E-mail: revistagriambi@gmail.com

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[1] * Corresponding author - E-mail: lincotomaz@gmail.com

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Efficiency of phosphorus use by melon genotypes1 1 Research developed at Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil

Eficiência de uso de fósforo por genótipos de meloeiro

HIGHLIGHTS:

ABSTRACT

Efficiency of phosphorus use by melon genotypes¹ 1 Research developed at Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil