Embalagem e pelotização poderiam manter a qualidade de sementes de tabaco durante o armazenamento?

A embalagem utilizada para manter as sementes durante o armazenamento é de grande importância na sua conservação. O efeito das embalagens na conservação da qualidade de sementes nuas e pelotizadas de tabaco da cultivar BAT 2101 foi avaliado no armazenamento a longo prazo. Após a caracterização do perfil do lote, as sementes foram armazenadas por 180, 360, 540 e 720 dias em condições de ambiente a 25 °C e umidade relativa de 62,8%, em sacos de algodão, latas de alumínio, envelopes laminado, envelopes plástico e envelopes de papel. A qualidade das sementes ao longo do armazenamento nas embalagens foi determinada pelo teor de água e pelos testes de germinação, primeira contagem de germinação, índice de velocidade de germinação, emergência inicial e final e índice de velocidade de emergência. A embalagem lata de alumínio permite manter a qualidade das sementes de tabaco nuas e pelotizadas por um período de 720 dias. Até os 360 dias de armazenamento houve diminuição da dormência das sementes nuas e pelotizadas e após esse período um aumento da deterioração, exceto para as mantidas em latas de alumínio.

Termos para indexação:
Nicotiana tabacum; conservação; germinação; vigor

Autoria

Maria Laene Moreira de Carvalho

Departamento de Agricultura, Universidade Federal de Lavras, Caixa Postal 3037, 37200-000 - Lavras, MG, Brasil. Universidade Federal de LavrasBrazilLavras, MG, BrazilDepartamento de Agricultura, Universidade Federal de Lavras, Caixa Postal 3037, 37200-000 - Lavras, MG, Brasil.

Camila Aparecida Lopes ^**Corresponding author <camilalopes_sjc@hotmail.com>

Ana Maria Pereira Ribeiro

Michelle Conceição Vasconcelos

Departamento de Engenharia Agronômica, Universidade Federal do Sergipe, Caixa Postal 49100-000 - São Cristóvão, SE, Brasil.Universidade Federal do SergipeBrazilSão Cristóvão, SE, BrazilDepartamento de Engenharia Agronômica, Universidade Federal do Sergipe, Caixa Postal 49100-000 - São Cristóvão, SE, Brasil.

*Corresponding author <camilalopes_sjc@hotmail.com>

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Figuras | Tabelas

Figuras (2)
Tabelas (8)

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Figure 1
Average values of germination (G%) as a function of the storage of bare tobacco seeds from the cultivar BAT 2101, kept in different packages.

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Figure 2
Average values of initial emergence (IE%) (A), Final emergence (FE%) (B) and bare tobacco seeds from the cultivar BAT 2101 stored for 720 days.

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Table 1
Average values of first germination count (FGC) of bare tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

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Table 2
Average values of germination speed index (GSI) of bare tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

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Table 3
Average values of first germination count (FGC %) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

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Table 4
Average values of germination (G %) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

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Table 5
Average values of germination speed index (GSI) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

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Table 6
Average values of initial emergence (IE) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

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Table 7
Average values of final stand (FS) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

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Table 8
Average values of emergence speed index (ESI) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

Figure 1 Average values of germination (G%) as a function of the storage of bare tobacco seeds from the cultivar BAT 2101, kept in different packages.

Figure 2 Average values of initial emergence (IE%) (A), Final emergence (FE%) (B) and bare tobacco seeds from the cultivar BAT 2101 stored for 720 days.

Table 1 Average values of first germination count (FGC) of bare tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

Packaging	Periods (days)
Packaging	0	180	360	540	720
Cotton	86 aB	96 aA	93 aA	84 bB	85 aB
Aluminum can	89 aA	91 aA	92 aA	93 aA	91 aA
Laminated env.	83 aB	85 bB	95 aA	90 aA	85 aB
Plastic env.	72 bB	88 bA	94 aA	85 bA	89 aA
Paper env.	76 bC	93 aA	91 aA	86 bB	84 aB
CV (%)	5.00

Averages followed by the same lowercase letter (in columns) or the same capital letter (in rows) do not differ by the Scott-Knott test at 5% of probability.

Table 2 Average values of germination speed index (GSI) of bare tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

Packaging	Periods (days)
Packaging	0	180	360	540	720
Cotton	14 aB	18 aA	15 aB	14 bB	14 cB
Aluminum can	14 aC	17 aB	16 aB	16 aB	19 aA
Laminated env.	14 aB	17 aA	16 aA	15 aB	17 bA
Plastic env.	13 aC	17 aA	15 aB	14 bC	17 bA
Paper env.	13 aB	17 aA	15 aB	14 bB	15 cB
CV (%)	5.76

Averages followed by the same lowercase letter (in columns) or the same capital letter (in rows) do not differ by the Scott-Knott test at 5% of probability.

Table 3 Average values of first germination count (FGC %) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

Packaging	Periods (days)
Packaging	0	180	360	540	720
Cotton	00 bB	51 cA	02 bB	00 bB	07 bB
Aluminum can	00 bD	85 aA	48 aC	68 aB	71 aB
Laminated env.	00 bB	73 bA	10 bB	02 bB	08 bB
Plastic env.	00 bB	85 aA	10 bB	03 bB	05 bB
Paper env.	02 aB	82 aA	09 bB	01 bB	02 bB
CV (%)	24.40

Averages followed by the same lowercase letter (in columns) or the same capital letter (in rows) do not differ by the Scott-Knott test at 5% of probability.

Table 4 Average values of germination (G %) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

Packaging	Periods (days)
Packaging	0	180	360	540	720
Cotton	90 aA	95 aA	94 aA	92 aA	88 aA
Aluminum can	90 aA	96 aA	98 aA	92 aA	95 aA
Laminated env.	92 aA	96 aA	97 aA	97 aA	75 bB
Plastic env.	87 aB	96 aA	95 aA	92 aA	80 bC
Paper env.	93 aA	97 aA	94 aA	89 aB	81 bC
CV (%)	4.59

Averages followed by the same lowercase letter (in columns) or the same capital letter (in rows) do not differ by the Scott-Knott test at 5% of probability.

Table 5 Average values of germination speed index (GSI) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

Packaging	Periods (days)
Packaging	0	180	360	540	720
Cotton	09 aC	13 bA	11 bB	10 bB	10 bB
Aluminum can	08 aC	14 aA	13 aB	13 aB	14 aA
Laminated env.	08 bC	14 aA	11 bB	10 bB	08 cC
Plastic env.	09 aC	15 aA	11 bB	10 bB	08 cC
Paper env.	09 aC	14 aA	11 bB	10 bB	08 cC
CV (%)	6.55

Averages followed by the same lowercase letter (in columns) or the same capital letter (in rows) do not differ by the Scott-Knott test at 5% of probability.

Table 6 Average values of initial emergence (IE) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

Packaging	Periods (days)
Packaging	0	180	360	540	720
Cotton	09 aD	62 bB	80 bA	68 cB	30 bC
Aluminum can	02 aC	88 aA	87 aA	91 aA	87 aA
Laminated env.	02 aD	87 aA	89 aA	78 bB	25 cC
Plastic env.	02 aD	83 aA	72 bB	73 bB	19 cC
Paper env.	03 aC	86 aA	76 aA	81 bA	31 bB
CV (%)	10.17

Averages followed by the same lowercase letter (in columns) or the same capital letter (in rows) do not differ by the Scott-Knott test at 5% of probability.

Table 7 Average values of final stand (FS) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

Packaging	Periods (days)
Packaging	0	180	360	540	720
Cotton	70 aB	87 aA	93 aA	88 aA	82 aA
Aluminum can	79 aB	88 aA	91 aA	96 aA	91 aA
Laminated env.	84 aA	92 aA	92 aA	90 aA	67 bB
Plastic env.	78 aA	86 aA	91 aA	88 aA	62 bB
Paper env.	82 aA	88 aA	88 aA	89 aA	80 aA
CV (%)	8.76

Averages followed by the same lowercase letter (in columns) or the same capital letter (in rows) do not differ by the Scott-Knott test at 5% of probability.

Table 8 Average values of emergence speed index (ESI) of pelleted tobacco seeds from the cultivar BAT 2101, stored for 720 days in different packages.

Packaging	Periods (days)
Packaging	0	180	360	540	720
Cotton	08 bC	14 bA	13 aA	12 bA	10 bB
Aluminum can	08 bB	14 cA	14 aA	15 aA	15 aA
Laminated env.	09 aC	16 aA	14 aB	13 bB	08 cC
Plastic env.	09 aB	14 bA	14 aA	13 bA	07 cB
Paper env.	09 aB	14 bA	13 aA	14 bA	10 bB
CV (%)	8.78

Averages followed by the same lowercase letter (in columns) or the same capital letter (in rows) do not differ by the Scott-Knott test at 5% of probability.

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