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Enhanced germination of seeds native to Brazil: A comparative analysis between free and nanoencapsulated gibberellic acid in Dyckia sp. (Bromeliaceae)

Jean Carlo Baudraz de Paula

Jean Carlo Baudraz de Paula

Agronomy Department, Universidade Estadual de Londrina (UEL)Londrina, Brazil
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de Paula, Jean Carlo Baudraz
, 
Hugo Roldi Guariz

Hugo Roldi Guariz

Agronomy Department, Universidade Estadual de Londrina (UEL)Londrina, Brazil
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Guariz, Hugo Roldi
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Kauê Alexandre Monteiro de Moraes

Kauê Alexandre Monteiro de Moraes

Agronomy Department, Universidade Estadual de Londrina (UEL)Londrina, Brazil
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de Moraes, Kauê Alexandre Monteiro
, 
Gabriel Danilo Shimizu

Gabriel Danilo Shimizu

Agronomy Department, Universidade Estadual de Londrina (UEL)Londrina, Brazil
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Shimizu, Gabriel Danilo
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Ricardo Tadeu de Faria

Ricardo Tadeu de Faria

Agronomy Department, Universidade Estadual de Londrina (UEL)Londrina, Brazil
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de Faria, Ricardo Tadeu
, 
Halley Caixeta de Oliveira

Halley Caixeta de Oliveira

Agronomy Department, Universidade Estadual de Londrina (UEL)Londrina, Brazil
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de Oliveira, Halley Caixeta
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Leonardo Fernandes Fraceto

Leonardo Fernandes Fraceto

Environmental Nanotechnology Lab, Science and Technology Institute of Sorocaba (ICTS), São Paulo State University (UNESP)Sorocaba - SP, Brazil
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Fraceto, Leonardo Fernandes
 und 
Anderson Espirito Santo Pereira

Anderson Espirito Santo Pereira

Environmental Nanotechnology Lab, Science and Technology Institute of Sorocaba (ICTS), São Paulo State University (UNESP)Sorocaba - SP, Brazil
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Pereira, Anderson Espirito Santo
  
31. Dez. 2023
Enhanced germination of seeds native to Brazil: A comparative analysis between free and nanoencapsulated gibberellic acid in Dyckia sp. (Bromeliaceae)'s Cover Image
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Artikel-Kategorie: ORIGINAL ARTICLE
Online veröffentlicht: 31. Dez. 2023
Seitenbereich: 403 - 418
Eingereicht: 14. Aug. 2023
Akzeptiert: 23. Okt. 2023
DOI: https://doi.org/10.2478/fhort-2023-0029
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© 2023 Jean Carlo Baudraz de Paula et al., published by Sciendo
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Figure 1.

Dyckia cabrerae SDM as a function of GA3 doses. GA3, gibberellic acid; SDM, seedling dry mass.
Dyckia cabrerae SDM as a function of GA3 doses. GA3, gibberellic acid; SDM, seedling dry mass.

Figure 2.

GERM (A), GSI (B), MGT (C), FGC (D), length (SL) (E) and SDM (F) of Dyckia dusenii as a function of GA3 doses. FGC, first germination count; GA3, gibberellic acid; GERM, germination; GSI, germination speed index; MGT, mean germination time; SDM, seedling dry mass; SL, seedling length.
GERM (A), GSI (B), MGT (C), FGC (D), length (SL) (E) and SDM (F) of Dyckia dusenii as a function of GA3 doses. FGC, first germination count; GA3, gibberellic acid; GERM, germination; GSI, germination speed index; MGT, mean germination time; SDM, seedling dry mass; SL, seedling length.

Figure 3.

MGT (A), FGC (B), length (SL) (C) and SDM (D) of Dyckia pottiorum as a function of GA3 doses. FGC, first germination count; GA3, gibberellic acid; MGT, mean germination time; SDM, seedling dry mass; SL, seedling length.
MGT (A), FGC (B), length (SL) (C) and SDM (D) of Dyckia pottiorum as a function of GA3 doses. FGC, first germination count; GA3, gibberellic acid; MGT, mean germination time; SDM, seedling dry mass; SL, seedling length.

Figure 4.

GERM (A), GSI (B), MGT (C), FGC (D), length (SL) (E) and SDM (F) of Dyckia walteriana as a function of GA3 doses. FGC, first germination count; GA3, gibberellic acid; GERM, germination; GSI, germination speed index; MGT, mean germination time; SDM, seedling dry mass; SL, seedling length.
GERM (A), GSI (B), MGT (C), FGC (D), length (SL) (E) and SDM (F) of Dyckia walteriana as a function of GA3 doses. FGC, first germination count; GA3, gibberellic acid; GERM, germination; GSI, germination speed index; MGT, mean germination time; SDM, seedling dry mass; SL, seedling length.

Figure 5.

Curve of water absorption by the seeds of Dyckia cabrerae without (A) and with GA3 (B) and D. pottiorum without (C) and with GA3 (D) at a dose of 0.75 mg · L−1. GA3, gibberellic acid.
Curve of water absorption by the seeds of Dyckia cabrerae without (A) and with GA3 (B) and D. pottiorum without (C) and with GA3 (D) at a dose of 0.75 mg · L−1. GA3, gibberellic acid.

Figure 6.

Water absorption curve by Dyckia dusenii seeds without (A) and with GA3 (B) and D. walteriana without (C) and with GA3 (D) at a dose of 5.0 mg · L−1. GA3, gibberellic acid.
Water absorption curve by Dyckia dusenii seeds without (A) and with GA3 (B) and D. walteriana without (C) and with GA3 (D) at a dose of 5.0 mg · L−1. GA3, gibberellic acid.

Figure 7.

GERM (A) and FGC (B) of Dyckia walteriana seeds as a function of different doses and types of gibberellic acid formulation (GA3). ALG, sodium alginate; CS, chitosan; FGC, first germination count; GA3 gibberellic acid; GERM, Germination; NP, nanoparticle; TPP, sodium tripolyphosphate.
GERM (A) and FGC (B) of Dyckia walteriana seeds as a function of different doses and types of gibberellic acid formulation (GA3). ALG, sodium alginate; CS, chitosan; FGC, first germination count; GA3 gibberellic acid; GERM, Germination; NP, nanoparticle; TPP, sodium tripolyphosphate.

Figure 8.

GSI (A) and MGT (B) of Dyckia walteriana seeds as a function of different doses and types of gibberellic acid formulation (GA3). ALG, sodium alginate; CS, chitosan; GA3 gibberellic acid; GSI, germination speed index; MGT, mean germination time; NP, nanoparticle; TPP, sodium tripolyphosphate.
GSI (A) and MGT (B) of Dyckia walteriana seeds as a function of different doses and types of gibberellic acid formulation (GA3). ALG, sodium alginate; CS, chitosan; GA3 gibberellic acid; GSI, germination speed index; MGT, mean germination time; NP, nanoparticle; TPP, sodium tripolyphosphate.

Figure 9.

Length (SL) (A) and dry mass (SDM) (B) of Dyckia walteriana seedlings as a function of different doses and types of gibberellic acid formulation (GA3). ALG, sodium alginate; CS, chitosan; GA3 gibberellic acid; NP, nanoparticle; SDM, seedling dry mass; SL, seedling length; TPP, sodium tripolyphosphate.
Length (SL) (A) and dry mass (SDM) (B) of Dyckia walteriana seedlings as a function of different doses and types of gibberellic acid formulation (GA3). ALG, sodium alginate; CS, chitosan; GA3 gibberellic acid; NP, nanoparticle; SDM, seedling dry mass; SL, seedling length; TPP, sodium tripolyphosphate.

p-value of the F test of the analysis of variance and CV (%) for the variables: FGC (%), GERM (%), AS (%), GSI, MGT (days), SL (mm) and SDM (mg) of seedlings for the species Dyckia cabrerae, D_ dusenii, D_ pottiorum and D_ walteriana as a function of doses of GA3_

D. cabrerae
FGC GERM AS GSI MGT SL SDM
p-value 0.8012 0.8558 0.9081t 0.8954 0.7463 0.8915 <0.001
CV (%) 41.14 16.33 50.42 7.35 4.86 5.49 10.10
D. dusenii
p-value 0.0037 <0.001 0.9844t <0.001 0.0211 0.0011 <0.001
CV (%) 26.34 11.45 40.2 13.00 5.40 8.65 11.08
D. pottiorum
p-value 0.0102 0.3135 0.8692t 0.9646 0.0166 0.0403 <0.001
CV (%) 23.44 14.95 37.86 17.23 7.81 16.02 14.80
D. walteriana
p-value <0.001 <0.001 - <0.001 <0.001 <0.001 <0.001
CV (%) 15.80 6.00 - 5.18 3.16 2.89 5.78

p-value analysis of variance and CV (%) for the variables: FGC (%), GERM (%), AS (%), GSI, MGT (days), SL (mm) and SDM (mg) of seedlings for treatments NP ALG/CS-GA3, NP CS/TPP-GA3, NP ALG/CS and NP CS/ TPP at different doses_

FGC GERM AS GSI MGT SL SDM
NP ALG/CS-GA3
p-value <0.001 <0.001 - <0.001 <0.001 <0.001 <0.001
CV (%) 14.56 5.41 - 3.41 3.65 2.35 7.09
Mean - - 3.14 - - - -
NP CS/TPP-GA3
p-value <0.001 <0.001 - <0.001 <0.001 <0.001 <0.001
CV (%) 14.97 7.24 - 4.23 3.27 1.97 6.44
Mean - - 2.29 - - - -
NP ALG/CS
p-value 0.414 0.064 - <0.001 0.024 0.053 0.474
CV (%) 22.68 10.74 - 6.08 3.20 4.70 11.18
Mean 11.0 42.0 2.71 7.45 - 7.06 7.09
NP CS/TPP
p-value 0.669 0.057 - <0.001 0.006 0.003 0.406
CV (%) 22.09 11.18 - 3.49 2.56 2.72 8.28
Mean 11.0 38.0 3.14 7.06 - - 2.24

Viability by tetrazolium test (%), germination (%) and water content (%) of Dyckia spp_ after harvest (10 days) and after storage (270 days)_

Species Viability Germination Water content
10 days 270 days 10 days 270 days 10 days 270 days
Dyckia cabrerae 79 68 71 38 9.2 8.5
Dyckia dusenii 81 71 75 36 9.5 8.9
Dyckia pottiorum 88 69 84 45 8.7 8.1
Dyckia walteriana 78 73 75 37 8.4 7.7
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