Germination and morphophysiology of passion fruit seedlings under salt water irrigation<sup>1</sup>

Andrade, Jailma Ribeiro de; Medeiros, Aldair de Sousa; Maia Júnior, Sebastião de Oliveira; Rezende, Leila de Paula; Araújo Neto, João Correia de

doi:10.1590/1983-40632018v4852710

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Scientific Articles • Pesqui. Agropecu. Trop. 48 (3) • Jul-Sep 2018 • https://doi.org/10.1590/1983-40632018v4852710 copy

Germination and morphophysiology of passion fruit seedlings under salt water irrigation¹

Germinação e morfofisiologia de plântulas de maracujazeiro sob irrigação com água salina

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The use of salt water in irrigation can reduce the growth and yield of agricultural crops. This study aimed to assess the germination, emergence, physiology and growth of passion fruit seedlings of two varieties under salt water irrigation. The study was conducted in two stages: the first carried out in a laboratory and the second in a greenhouse, using a randomized block design, in a 2 x 4 factorial scheme, corresponding to two passion fruit varieties (BRS RC and BRS GA1) and four levels of irrigation water electrical conductivity (0.2 dS m^-1, 2.2 dS m^-1, 4.2 dS m^-1 and 6.2 dS m^-1), with four replications. The BRS GA1 variety exhibited the highest germination index and rate, in the germination stage, despite being more sensitive to salinity than the BRS RC. There was no damage to the photosynthetic apparatus in the BRS GA1 seedlings during growth, as demonstrated by the higher leaf biomass, when compared to the BRS RC variety.

KEYWORDS:
Passiflora edulis; vegetative growth; salinity

Sources of variation	F-test
Sources of variation	GSI	G%	DWs	DWr
Salinity (S)	14.41^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	5.02^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	3.56^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	1.64^ns ns and * not significant and significant, respectively, according to the F-test at 5 %.
Linear regression	25.68^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	1.36^ns ns and * not significant and significant, respectively, according to the F-test at 5 %.	0.03^ns ns and * not significant and significant, respectively, according to the F-test at 5 %.	0.27^ns ns and * not significant and significant, respectively, according to the F-test at 5 %.
Quadratic regression	11.80^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	10.27^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	5.29^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	2.31^ns ns and * not significant and significant, respectively, according to the F-test at 5 %.
Variety (V)	36.69^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	15.32^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	0.04^ns ns and * not significant and significant, respectively, according to the F-test at 5 %.	10.77^* ns and * not significant and significant, respectively, according to the F-test at 5 %.
S x V	3.73^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	3.76^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	5.61^* ns and * not significant and significant, respectively, according to the F-test at 5 %.	1.95^ns ns and * not significant and significant, respectively, according to the F-test at 5 %.
CV(%)	13.30	6.50	18.70	21.30

Sources of variation	F-test
Sources of variation	PH	SD	NL	SPAD	Fv/Fm	LA	LDW	SDW	RDW
Salinity (S)	19.05^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	13.66^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	12.60^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	5.31^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	8.49^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	1.56^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	1.06^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	7.85^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	5.92^* ns, * not significant and significant, respectively, according to the F-test at 5 %.
Linear regression	56.03^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	37.85^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	36.02^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	243.40^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	25.32^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	1.77^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	45.19^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	22.12^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	12.07^* ns, * not significant and significant, respectively, according to the F-test at 5 %.
Quadratic regression	1.07^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	0.09^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	1.71^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	6.20^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	0.09^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	1.99^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	5.70^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	1.40^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	0.00^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.
Variety (V)	9.48^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	25.10^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	8.67^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	11.82^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	17.27^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	81.82^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	33.39^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	0.16^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	0.20^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.
S x V	0.47^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	1.26^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	0.17^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	1.18^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	4.01^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	1.78^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	0.76^* ns, * not significant and significant, respectively, according to the F-test at 5 %.	0.64^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.	0.96^ns ns, * not significant and significant, respectively, according to the F-test at 5 %.
Block	3.34	0.01	0.30	43.13	0.00	89.00	0.13	0.01	0.01
Residue	0.63	0.04	0.29	2.72	0.00	68.20	0.18	0.04	0.01
CV(%)	7.10	6.00	6.60	10.60	2.20	7.70	15.00	17.90	9.60

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E-mail: revistapat.agro@ufg.br

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[TFN1] ^{ns and *}
not significant and significant, respectively, according to the F-test at 5 %.

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Germination and morphophysiology of passion fruit seedlings under salt water irrigation1

Germinação e morfofisiologia de plântulas de maracujazeiro sob irrigação com água salina

ABSTRACT

Germination and morphophysiology of passion fruit seedlings under salt water irrigation¹