Physiological potential of stored Schinopsis brasiliensis Engler diaspores

Silva, Monalisa Alves Diniz da; Barboza, Vanessa Renata de Souza; Silva, Joyce Naiara da; Gonçalves, Edilma Pereira; Viana, Jeandson da Silva

doi:10.5935/1806-6690.20220038

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Scientific Article • Rev. Ciênc. Agron. 53 • 2022 • https://doi.org/10.5935/1806-6690.20220038 copy

Physiological potential of stored Schinopsis brasiliensis Engler diaspores¹ 1 Parte da dissertação do segundo autor, apresentada ao Programa de Pós Graduação em Produção Vegetal, Universidade Federal Rural de Pernambuco (UFRPE), Unidade Acadêmica de Serra Talhada (UAST)

Potencial fisiológico de diásporos armazenados de Schinopsis brasiliensis Engler

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Storage of diaspores makes it possible to provide seedlings for reforestation programs or restoration of degraded areas, especially for perennial species that do not regularly produce diaspores or when germination is difficult and slow. The objective of the present study was to verify the physiological potential of Schinopsis brasiliensis diaspores stored in two environments for 12 months, with subsequent manual scarification of the endocarp. The experimental design was entirely randomized, using a 2 × 7 × 2 factorial scheme, with two environments (natural and refrigerator), seven periods (0, 2, 4, 6, 8, 10 and 12 months) of storage, and two physical conditions of the endocarp (intact and scarified). The study analyzed water content, emergence, speed index and mean emergence time, length and dry mass of the aerial part and root system, and collar diameter of the seedlings. The 12 month storage did not overcome the tegument dormancy of S. brasiliensis diaspores. After storage in the natural environment, manual scarification favored emergence and the seedlings' speed of establishment. The diaspores presented increased germination capacity at five months and decreased seedling development before losing their germination capacity, regardless of storage conditions.

Keywords:
Ex situ conservation; Deterioration; Dormancy

Storage (months)
Storage environments	0		2		4		6		8		10		12
Storage environments	I	S	I	S	I	S	I	S	I	S	I	S	I	S
Natural	15.8	16.9	13.5	15.2	12.3	15.1	11.4	14.8	11.6	14.9	9.5	10.8	9.3	9.5
Refrigerator	15.8	16.9	14.9	15.5	14.1	15.3	13.5	14.8	13.9	15.4	13.2	10.2	11.2	9.6

Sources of variation	Mean Square
Sources of variation	GL	E	ESI	MTE
SP (F1)	6	887.42**	0.36**	32.86**
OD (F2)	1	6993.08**	2.59**	30.89**
SE (F3)	1	305.58^ns	0.17^ns	0.02^ns
F1 x F2	6	403.49^ns	0.13^ns	11.04*
F1 x F3	6	225.37^ns	0.14*	18.42**
F2 x F3	1	1255.58*	0.32*	0.91^ns
F1 x F2 x F3	6	227.45^ns	0.04^ns	1.01^ns
Residue	84	242.03	0.061	4.08
CV(%)		36.49	39.40	12.70

Storage environments	E (%)		ESI
	Physical condition of the endocarp
	Intact	Scarified	Intact	Scarified
Natural	33 Ab	55 Aa	0.46 Ab	0.87 Aa
Refrigerator	36 Ab	46 Ba	0.49 Ab	0.69 Ba

Source of variation	Mean Square
Source of variation	GL	LAP	LSR	CD	DMAP	DMRS
SP (F1)	6	18.56**	7.30**	0.369**	0.10**	0.05**
OD (F2)	1	0.41^ns	0.51^ns	0.023**	0.003^ns	0.005^ns
SE (F3)	1	0.04^ns	0.40^ns	0.085**	0.001^ns	0.000^ns
F1 x F2	6	0.47^ns	0.27^ns	0.022**	0.008^ns	0.004^ns
F1 x F3	6	0.31^ns	0.25^ns	0.003**	0.01*	0.008*
F2 x F3	1	0.32^ns	0.001^ns	0.001^ns	0.000^ns	0.002^ns
F1 x F2 x F3	6	0.21^ns	0.08^ns	0.002^ns	0.006^ns	0.002^ns
Waste	84	0.28	0.14	0.0009	0.006	0.002
CV(%)		12.85	7.56	5.08	40.02	56.27

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[1] Editor-in-Chief: Alek Sandro Dutra - alekdutra@ufc.br

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Physiological potential of stored Schinopsis brasiliensis Engler diaspores1 1 Parte da dissertação do segundo autor, apresentada ao Programa de Pós Graduação em Produção Vegetal, Universidade Federal Rural de Pernambuco (UFRPE), Unidade Acadêmica de Serra Talhada (UAST)

Potencial fisiológico de diásporos armazenados de Schinopsis brasiliensis Engler

ABSTRACT

Physiological potential of stored Schinopsis brasiliensis Engler diaspores¹ 1 Parte da dissertação do segundo autor, apresentada ao Programa de Pós Graduação em Produção Vegetal, Universidade Federal Rural de Pernambuco (UFRPE), Unidade Acadêmica de Serra Talhada (UAST)