Physiological and Cellular Changes of Stored <i>Cryptocarya aschersoniana</i> Mez. Seeds

Tonetti, Olívia Alvina Oliveira; Pereira, Wilson Vicente Souza; José, Anderson Cleiton; Faria, José Marcio Rocha

doi:10.1590/2179-8087-FLORAM-2020-0067

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

ORIGINAL ARTICLE, SILVICULTURE • Floresta Ambient. 28 (3) • 2021 • https://doi.org/10.1590/2179-8087-FLORAM-2020-0067 copy

Physiological and Cellular Changes of Stored Cryptocarya aschersoniana Mez. Seeds

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Some species of the Lauraceae family produce seeds that are generally sensitive to desiccation, which makes them difficult to store. The objective of this study was to characterize changes in seed quality of C. aschersoniana from two lots, as well in the physiological and cellular aspects during 12 months of storage. Seeds were stored with their original moisture content (MC) or after pre-drying to 35% MC in a cold chamber (5 °C) at a relative humidity of 40%. Seeds were sampled and tested at time 0, 3, 6 and 12 months of storage regarding to moisture content, germination and ultrastructural features. The seeds were dispersed with dormancy that was overcame by the cold storage condition and the reserves in undried seeds were partly consumed during storage. Both undried and pre-dried seeds remained viable for at least 12 months.

Keywords:
Lauraceae; seed conservation; storage; ultrastructural analyses

Collection year	Storage condition	Storage time (months)				Mean ± SD	CV (%)
Collection year	Storage condition	0	3	6	12	Mean ± SD	CV (%)
Year 1	Wet	40.6	40.4	40.6	39.5	40.3 ± 0.53	4.12
	Pre-drying	35.5	34.9	35.4	35.8	35.4 ± 0.37	2.87
Year 2	Wet	47.0	45.8	47.6	48.3	47.2 ± 1.06	3.93
	Pre-drying	37.8	36.4	35.7	38.4	37.1 ± 1.24	6.94

Storage time (months)	Storage condition	G	DoS	DeS	MGT (days)	GSI
Storage time (months)	Storage condition	%			MGT (days)	GSI
0	Wet	15 a	59 a	26 a	96 a	0.043 a
0	Pre-drying	9 a	74 a	17 a	97 a	0.027 a
3	Wet	70 a	16 a	14 a	52 a	0.287 a
3	Pre-drying	55 b	34 a	11 a	50 a	0.258 a
6	Wet	90 a	10 a	0 a	33 a	0.643 a
6	Pre-drying	79 b	5 a	16 a	39 a	0.482 b
12	Wet	93 a	3 a	4 a	39 a	0.549 a
12	Pre-drying	90 a	3 a	7 a	43 a	0.509 a

Storage time (months)	Storage condition	G	DoS	DeS	MGT* (days)	GSI*
Storage time (months)	Storage condition	%			MGT* (days)	GSI*
0	Wet	6 a	83 a	11 a	65 a	0.027 a
0	Pre-drying	9 a	69 b	22 a	62 a	0.049 a
3	Wet	75 a	11 a	14 a	56 a	0.406 a
3	Pre-drying	68 b	7 a	25 a	47 a	0.484 a
6	Wet	66 a	13 a	21 a	37 a	0.685 a
6	Pre-drying	74 a	4 b	22 a	39 a	0.655 a
12	Wet	79 a	6 a	15 a	23 a	1,130 a
12	Pre-drying	75 a	0 a	25 a	38 a	0.608 b

Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro Rodovia BR 465 Km 7, CEP 23897-000, Tel.: (21) 2682 0558 | (21) 3787-4033 - Seropédica - RJ - Brazil
E-mail: floram@ufrrj.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] CORRESPONDENCE TOJosé Marcio Faria Universidade Federal de Lavras, Laboratório de Sementes Florestais. Campus Universitário, s/n. Cx. Postal 3037, CEP 37200-900, Lavras, MG, Brasil e-mail: jmfaria@ufla.br