Growth and physiology of the citrange ‘Fepagro C37 Reck’ rootstock innoculated with arbuscular mycorrhizal fungi

Back, Marina Martinello; Fedrizzi, Gabriela; Souza, Paulo Vitor Dutra de

doi:10.1590/0034-737X201865040008

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Crop Production • Rev. Ceres 65 (04) • Jul-Aug 2018 • https://doi.org/10.1590/0034-737X201865040008 copy

Growth and physiology of the citrange ‘Fepagro C37 Reck’ rootstock innoculated with arbuscular mycorrhizal fungi¹ This work is part of the first author’s Master Dissertation. Financial support: CNPq.

Desenvolvimento e fisiologia do porta-enxerto citrangeiro ‘Fepagro C37 Reck’ inoculado com fungos micorrízicos arbusculares

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The use of arbuscular mycorrhizal fungi (AMF) in the production of rootstocks is a strategy to promote faster plant growth. However, this response depends on the symbiont species. The objective of this study was to evaluate the influence of different species of arbuscular mycorrhizal fungus (AMF) on the development and physiology of citrange 'Fepagro C37 Reck' rootstock. Four species of AMF were used in the experiment: Scutellospora heterogama, Gigaspora margarita, Glomus etunicatum, and Acaulospora sp., and a control treatment. The experiment was arranged in a randomized blocks design, with 5 treatments, 3 replicates, and 10 plants per plot. Every 15 days, height (cm) and stem diameter (mm) of plants were measured in the nursery. At 330 days, the number of leaves, leaf area (cm²), fresh and dry mass of roots and shoot (g/plant), root and shoot reserve content, and AMF colonization were evaluated. The AMF inoculation promoted an accelerated vegetative growth, resulting in greater height and diameter. The fungi also promoted greater absorption of most of the nutrients and increase in all other parameters evaluated. However, no effect was found on the reserve content of the rootstock. Roots were colonized with moderate presence of arbuscules and low presence of vesicles. AMF, regardless of species, influence the development and physiology of the citrange 'Fepagro C37 Reck' rootstock.

Keywords:
endomycorrhizae; citrus; clonal seedling production; vegetative growth; nutrients; colonization

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E-mail: ceres@ufv.br

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[1] *Corresponding author: backmarina@gmail.com

Treatment	Number of Leaves	Leaf Area (cm²/plant)
Control	14.08 b	60.536 b
Scutellospora heterogama	27.76 a	209.177 a
Gigaspora margarita	25.16 a	201.880 a
Glomus etunicatum	25.47 a	180.977 a
Acaulospora sp.	24.02 a	175.076 a
CV (%)	14.43	22.01

Treatment	Shoot (g)		Root (g)
Treatment	FM	DM	FM	DM
Control	2.570 b*	0.770 b**	2.388 b**	0.841 b*
Scutellospora heterogama	9.026 a	3.377 a	10.552 a	3.650 a
Gigaspora margarita	8.314 a	4.180 a	10.920 a	3.867 a
Glomus etunicatum	8.554 a	3.337 a	8.701 a	3.446 a
Acaulospora sp.	7.511 a	2.883 a	8.100 a	3.013 a
CV (%)	21.89	13.24	15.56	16.56

Treatment	N	P	K	Ca	Mg	S
Treatment	%
Control	1.40 a**	0.50 d**	1.33 a*	2.70 ab*	0.29 a**	0.37 ns
Scutellospora heterogama	1.30 ab	0.54 bc	1.37 a	3.03 a	0.25 b	0.33
Gigaspora margarita	1.23 b	0.57 b	1.13 ab	2.60 b	0.23 bc	0.3
Glomus etunicatum	1.16 b	0.53 c	1.09 ab	2.43 b	0.21 c	0.31
Acaulospora sp.	1.43 a	0.65 a	1.00 b	2.67 ab	0.21 c	0.3
CV (%)	3.7	2.86	13.58	5.56	7.12	6.18

Treatment	Cu	Zn	Fe	Mn	B
Treatment	mg/Kg
Control	131.67 c**	74.00 a*	172.33 c**	405.00 a**	48.00 a**
Scutellospora heterogama	134.00 c	71.00 a	230.33 b	150.67 b	47.00 ab
Gigaspora margarita	177.67 b	58.33 b	273.67 a	145.33 b	43.33 b
Glomus etunicatum	144.00 c	54.33 b	291.33 a	139.00 b	45.33 ab
Acaulospora sp.	214.67 a	54.67 b	244.67 b	113.67 c	44.67 ab
CV (%)	3.5	4.61	2.8	2.82	3.2

Treatment	Shoot	Root
Treatment	%
Control	33.996 ^ns	24.197 ^ns
Scutellospora heterogama	32.331	18.601
Gigaspora margarita	32.408	13.886
Glomus etunicatum	33.236	15.702
Acaulospora sp.	31.602	18.317
CV (%)	8.36	20.9

Treatment	Colonization (%)	Hyphae	Arbuscules	Vesicles
Control	9.15 b **	0.312 c**	0.271 c**	0.005 b**
Scutellospora heterogama	100.00 a	1.625 b	1.271 b	0.042 b
Gigaspora margarita	100.00 a	2.021 ab	1.958 a	0.500 a
Glomus etunicatum	100.00 a	2.229 a	1.958 a	0.583 a
Acaulospora sp.	100.00 a	2.166 a	1.458 b	0.167 b
CV (%)	0.27	15.66	8.92	21.45

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Growth and physiology of the citrange ‘Fepagro C37 Reck’ rootstock innoculated with arbuscular mycorrhizal fungi1 This work is part of the first author’s Master Dissertation. Financial support: CNPq.

Desenvolvimento e fisiologia do porta-enxerto citrangeiro ‘Fepagro C37 Reck’ inoculado com fungos micorrízicos arbusculares

ABSTRACT

Growth and physiology of the citrange ‘Fepagro C37 Reck’ rootstock innoculated with arbuscular mycorrhizal fungi¹ This work is part of the first author’s Master Dissertation. Financial support: CNPq.