RESISTANCE OF <i>CUCURBITA</i> SPP. TO <i>FUSARIUM SOLANI</i> FOR USE AS ROOTSTOCK

SANTOS, JOICE SIMONE DOS; DIAS, RITA DE CÁSSIA SOUZA; ALMEIDA, KARINA BRANCO DE; RIBEIRO JUNIOR, PEDRO MARTINS; NASCIMENTO, TIAGO LIMA DO

doi:10.1590/1983-21252020v33n211rc

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Agronomy • Rev. Caatinga 33 (2) • Apr-Jun 2020 • https://doi.org/10.1590/1983-21252020v33n211rc copy

RESISTANCE OF CUCURBITA SPP. TO FUSARIUM SOLANI FOR USE AS ROOTSTOCK

RESISTÊNCIA DE CUCURBITA SPP. AO FUSARIUM SOLANI VISANDO O USO COMO PORTA-ENXERTO

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Fusarium solani f. sp. cucurbitae (Fsc) is a soil pathogen and the adoption of resistant rootstocks is an effective method of control. Hybrids of Cucurbita spp. are the main rootstock used for watermelon. This study aimed to evaluate the virulence of Fsc race 1 (Fsc1) in three cucurbits and check the reaction of Cucurbita spp. genotypes to the fungus for its use as rootstock. Four experiments were performed. The virulence of Fsc1 in melon, watermelon and Cucurbita spp. was evaluated in experiment I. In experiment two and three the severity of the pathogen in 19 cucurbits was analyzed. And experiment four evaluated the compatibility of these genotypes as a rootstock for watermelon. Cucurbita spp. proved to be more resistant to Fusarium solani f. sp. cucurbitae race 1 than the melon. The high frequency of plants resistant to Fsc1 was found in the genotypes BGC622, BGC620, BGC567, BGC530, BGC186, BGC381, BGC692, BGC082, ES0061 and ES0062. In addition, the evaluated genotypes may be used as watermelon rootstocks, except for the ES530 strain, which was incompatible with the cultivar BRS Opara, but could be used in pumpkin breeding programs, as well as other resistant genotypes.

Keywords:
Soil pathogen; Grafting; Germoplasm; Cucurbits

Genotypes	Lesion size
	Length (cm)		Diameter (cm)		Depth (¹scores)
	E2	E3	E2	E3	E2	E3
BGC010	1.34 bc	0.52 c	0.44 cd	0.50 a	1.8 cd	1.5 bc
BGC685	2.27 a	0.57 c	0.86 a	0.32 def	2.7 a	1.2 cd
BGC381	1.11 cd	1.04 a	0.57 bc	0.35 cdef	2.1 bcd	1.1 cd
BGC249	0.97 cd	1.01 a	0.41 cd	0.31 def	1.7 cd	1.0 d
BGC622	0.84 d	0.71 bc	0.35 d	0.32 def	1.8 cd	1.0 d
BGC082	1.04 cd	-	0.34 d	-	1.9 cd	-
BGC385	1.58 b	-	0.63 b	-	2.4 ab	-
BGC692	-	0.16 d	-	0.35 cdef	-	1.1 cd
BGC495	-	0.48 c	-	0.46 ab	-	1.5 bc
BGC447	-	0.52 c	-	0.32 def	-	1.0 d
BGC567	1.14 bcd	0.57 c	0.44 cd	0.26 f	2.2 bc	1.3 cd
BGC530	1.14 bcd	0.60 c	0.40 d	0.35 cdef	1.2 e	1.0 d
BGC830	1.09 cd	0.86 ab	0.35 d	0.39 bcd	1.2 e	1.5 bc
BGC814	1.16 bcd	0.61 c	0.39 d	0.44 abc	1.6 de	2.1 a
BGC620	-	0.58 c	-	0.29 ef	-	1.0 d
BGC186	-	0.68 bc	-	0.37 bcde	-	1.5 bc
ES0062	-	0.54 c	-	0.34 def	-	1.1 cd
ES0030	-	0.96 a	-	0.38 bcde	-	1.9 ab
ES0061	-	0.68 bc	-	0.27 f	-	1.0 d
CV(%)	36.6	21.9	34.3	16.8	25.1	22.0

¹Genotypes	Experiment 2							Experiment 3
	S (¹Scores)	Resistance (%)					S (¹Scores)	Resistance (%)
	S (¹Scores)	AR	R	MR	S	AS	S (¹Scores)	AR	R	MR	S	AS
BGC685	5.0 a	0.0	0.0	0.0	100	0.0	2.4 abc	0.0	80.0	10.0	0.0	10.0
BGC381	3.8 b	0.0	33.3	0.0	22.2	44.4	2.0 bc	0.0	91.7	8.3	0.0	0.0
BGC385	3.5 b	0.0	46.9	3.1	0.0	50.0	-	-	-	-	-	-
BGC814	3.4 bc	4.2	25.0	29.2	12.5	29.2	3.2 ab	0.0	30.0	40.0	10.0	20.0
BGC567	2.8 cd	0.0	60.0	20.0	0.0	20.0	2.1 bc	0.0	92.3	7.7	0.0	0.0
BGC830	2.4 de	15.8	57.9	5.3	10.5	10.5	2.5 abc	0.0	50.0	50.0	0.0	0.0
BGC010	2.6 de	0.0	0.0	5.9	76.5	17.6	3.4 a	10.0	20.0	20.0	20.0	30.0
BGC249	2.0 e	0.0	100	0.0	0.0	0.0	2.2 abc	28.6	57.1	0.0	0.0	14.3
BGC622	2.0 e	0.0	100	0.0	0.0	0.0	2.3 abc	0.0	90.0	0.0	0.0	10.0
BGC082	2.1 e	0.0	94.1	5.9	0.0	0.0	-	-	-	-	-	-
BGC530	2.1 e	3.7	85.2	11.1	0.0	0.0	2.1 bc	0.0	92.3	7.7	0.0	0.0
BGC692	-	-	-	-	-	-	2.0 bc	0.0	92.9	7.1	0.0	0.0
BGC495	-	-	-	-	-	-	3.2 ab	0.0	41.7	16.7	8.3	33.3
BGC447	-	-	-	-	-	-	2.3 abc	0.0	63.6	27.3	0.0	9.1
BGC620	-	-	-	-	-	-	2.0 bc	0.0	100.0	0.0	0.0	0.0
BGC186	-	-	-	-	-	-	2.1 bc	0.0	91.7	8.3	0.0	0.0
ES0062	-	-	-	-	-	-	2.0 bc	0.0	100.0	0.0	0.0	0.0
ES0030	-	-	-	-	-	-	2.6 abc	10.0	50.0	20.0	10.0	10.0
ES0061	-	-	-	-	-	-	1.9 c	7.1	92.9	0.0	0.0	0.0
CV(%)	20.4	-	-	-	-	-	33.4	-	-	-	-	-

	Experiment	Diameter (cm)	Depth (cm)	² Scale of scores
Lesion length (cm)	E2	0.76^ The correlation is significant at p <0.01. ns the correlation is not significant. 1 Score scale ranged from 1 to 3 (where: 1 = no depression of lesion; 2 = very deep, and 3 = very deep. 2 Score scale ranged from 1 to 5 [where 1 = highly resistant plant (HR); 2 = resistant plant (R), 3 = moderately resistant plant (MR), 4 = susceptible plant (S) and 5 = highly susceptible plant (HS)]. Experiments 2 and 3 (E2 and E3).	0.62^ The correlation is significant at p <0.01. ns the correlation is not significant. 1 Score scale ranged from 1 to 3 (where: 1 = no depression of lesion; 2 = very deep, and 3 = very deep. 2 Score scale ranged from 1 to 5 [where 1 = highly resistant plant (HR); 2 = resistant plant (R), 3 = moderately resistant plant (MR), 4 = susceptible plant (S) and 5 = highly susceptible plant (HS)]. Experiments 2 and 3 (E2 and E3).	0.11 ns
Lesion length (cm)	E3	0.11 ns	0.19^* * The correlation is significant at p <0.05.	0.81^ The correlation is significant at p <0.01. ns the correlation is not significant. 1 Score scale ranged from 1 to 3 (where: 1 = no depression of lesion; 2 = very deep, and 3 = very deep. 2 Score scale ranged from 1 to 5 [where 1 = highly resistant plant (HR); 2 = resistant plant (R), 3 = moderately resistant plant (MR), 4 = susceptible plant (S) and 5 = highly susceptible plant (HS)]. Experiments 2 and 3 (E2 and E3).
Lesion diameter (cm)	E2		0.68^ The correlation is significant at p <0.01. ns the correlation is not significant. 1 Score scale ranged from 1 to 3 (where: 1 = no depression of lesion; 2 = very deep, and 3 = very deep. 2 Score scale ranged from 1 to 5 [where 1 = highly resistant plant (HR); 2 = resistant plant (R), 3 = moderately resistant plant (MR), 4 = susceptible plant (S) and 5 = highly susceptible plant (HS)]. Experiments 2 and 3 (E2 and E3).	0.11 ns
Lesion diameter (cm)	E3		0.22^ The correlation is significant at p <0.01. ns the correlation is not significant. 1 Score scale ranged from 1 to 3 (where: 1 = no depression of lesion; 2 = very deep, and 3 = very deep. 2 Score scale ranged from 1 to 5 [where 1 = highly resistant plant (HR); 2 = resistant plant (R), 3 = moderately resistant plant (MR), 4 = susceptible plant (S) and 5 = highly susceptible plant (HS)]. Experiments 2 and 3 (E2 and E3).	0.15^* * The correlation is significant at p <0.05.
Lesion depth (¹score)	E2			0.31^ The correlation is significant at p <0.01. ns the correlation is not significant. 1 Score scale ranged from 1 to 3 (where: 1 = no depression of lesion; 2 = very deep, and 3 = very deep. 2 Score scale ranged from 1 to 5 [where 1 = highly resistant plant (HR); 2 = resistant plant (R), 3 = moderately resistant plant (MR), 4 = susceptible plant (S) and 5 = highly susceptible plant (HS)]. Experiments 2 and 3 (E2 and E3).
Lesion depth (¹score)	E3			0.25^ The correlation is significant at p <0.01. ns the correlation is not significant. 1 Score scale ranged from 1 to 3 (where: 1 = no depression of lesion; 2 = very deep, and 3 = very deep. 2 Score scale ranged from 1 to 5 [where 1 = highly resistant plant (HR); 2 = resistant plant (R), 3 = moderately resistant plant (MR), 4 = susceptible plant (S) and 5 = highly susceptible plant (HS)]. Experiments 2 and 3 (E2 and E3).

Scion / rootstock	Seedling survival (%)			¹Precocity (DAS)		¹LMB (cm)	¹DMP (g)
Scion / rootstock	AW	AT	Total	MF	FF	¹LMB (cm)	¹DMP (g)
OP/WG	-	-	100.0	40.3 e	47.1 c	198.0 a	22.5 ab
OP/SG	100.0	100.0	100.0	43.0 de	51.4 bc	176.3 a	15.9 cd
OP/ES567	100.0	93.3	93.3	52.4 a	56.8 a	116.5 d	10.4 d
OP/ES620	88.9	100.0	88.9	50.3 ab	53.7 ab	169.3 abc	18.4 abc
OP/ES530	100.0	27.3	27.3	49.8 abc	55.3 ab	120.1 cd	16.0 cd
OP/ES0007	100.0	100.0	100.0	50.2 ab	54.4 ab	172.1 ab	18.7 abc
OP/ES0012	92.3	84.6	76.9	48.2 bc	52.5 ab	125.9 bcd	16.8 bc
OP/ES0061	83.3	100.0	83.3	46.4 cd	52.4 ab	172.8 ab	23.2 a
OP/ES0062	83.3	94.4	77.8	50.0 abc	55.8 ab	152.7 abcd	22.1 abc
CV (%)	-	-	-	5.5	6.1	22.4	23.6

Universidade Federal Rural do Semi-Árido Avenida Francisco Mota, número 572, Bairro Presidente Costa e Silva, Cep: 5962-5900, Telefone: 55 (84) 3317-8297 - Mossoró - RN - Brazil
E-mail: caatinga@ufersa.edu.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] *Corresponding author