Paper · 2019 · AFRICAN JOURNAL OF BIOTECHNOLOGY

In vitro regeneration of coconut (Cocos nucifera L) through indirect somatic embryogenesis in Kenya

C. Bett Caren; M. Mweu Cecilia; B. Nyende Aggrey

16
claims
32
verbatim quotes
7
citations
3
research areas
✓
Open access · cc-by

Abstract

Regeneration of the coconut (Cocos nucifera L) through indirect somatic embryogenesis using 9 to 12 months embryos explants was established in Y3 medium supplemented with 100 to 250 µM 2,4 -dichlorophenoxyacetic acid (2, 4-D) alone and in combination with gibberellic acid (GA3), 6-benzylaminopurine (BAP) and thiadiazuron (TDZ). The highest callus induction (100%) was observed in medium containing 150 and 250 µM 2, 4-D + 5 µM BAP while the least was in 2, 4-D alone (16.7%) and in combination with 0.35 µM GA3 (0). The highest embryogenic calli were observed in medium with 125 µM 2, 4-D + 5 µM BAP (100%) and the least was in medium with 2, 4-D alone (16.7) and in combination with 0.35 µM GA3 (0). Multiple shoot induction was observed in medium supplemented with 10 µM kinetin, 10 µM BAP, 0.5 µM GA3, and 200 µM NAA. Maximum shoot elongation (1.667 cm) was in medium containing 10 µM BAP and the least (0.811 cm) was in medium with 5 µM BAP. Rooting was done in Y3 medium containing three levels of indole-3-butyric acid (IBA). The highest response was observed in Y3 medium supplemented with 5 µM IBA+ 0.5 µM GA3 both with respect to the number of roots 8.33 and root length 5.10 cm while the least was with 10 µM IBA+ 0.5 µM GA3 with regard to the number of roots 3.33 and root length 2.83 cm. Acclimatization was achieved in media prepared with soil: sand: manure ratio (3:1:1) with 25% survival rate and vermiculate medium with 8.3% survival rate. Hence, in vitro regeneration of coconut through somatic embryogenesis is a viable alternative for mass propagation. Key words: Cocos nucifera L., somatic embryogenesis, zygotic embryos.

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Claims 16

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Callus induction peaked at 100% under 150 and 250 µM 2,4-D with BAP.

Taxon
coconutt0
Treatment
150 and 250 µM 2, 4-D + 5 µM BAPe0
Outcome
callus inductione0
Direction
higheste0
Value
100%e0
Comparator
2, 4-D alonee0

Verbatim

e0

“The highest callus induction (100%) was observed in medium containing 150 and 250 µM 2, 4-D + 5 µM BAP while the least was in 2, 4-D alone (16.7%) and in combination with 0.35 µM GA3 (0).”

✓ located verbatim in the source · abstract, characters 330–517 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Callus induction under 2,4-D alone was 16.7%.

Taxon
coconutt0
Treatment
2, 4-D alonee0
Outcome
callus inductione0
Direction
leaste0
Value
16.7%e0
Comparator
150 and 250 µM 2, 4-D + 5 µM BAPe0

Verbatim

e0

“The highest callus induction (100%) was observed in medium containing 150 and 250 µM 2, 4-D + 5 µM BAP while the least was in 2, 4-D alone (16.7%) and in combination with 0.35 µM GA3 (0).”

✓ located verbatim in the source · abstract, characters 330–517 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Callus induction was zero with 2,4-D plus GA3.

Taxon
coconutt0
Treatment
in combination with 0.35 µM GA3e0
Outcome
callus inductione0
Direction
leaste0
Value
0e0
Comparator
150 and 250 µM 2, 4-D + 5 µM BAPe0

Verbatim

e0

“The highest callus induction (100%) was observed in medium containing 150 and 250 µM 2, 4-D + 5 µM BAP while the least was in 2, 4-D alone (16.7%) and in combination with 0.35 µM GA3 (0).”

✓ located verbatim in the source · abstract, characters 330–517 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Embryogenic calli peaked at 100% with 125 µM 2,4-D plus BAP.

Taxon
coconutt0
Treatment
125 µM 2, 4-D + 5 µM BAPe0
Outcome
embryogenic callie0
Direction
higheste0
Value
100%e0
Comparator
2, 4-D alonee0

Verbatim

e0

“The highest embryogenic calli were observed in medium with 125 µM 2, 4-D + 5 µM BAP (100%) and the least was in medium with 2, 4-D alone (16.7) and in combination with 0.35 µM GA3 (0).”

✓ located verbatim in the source · abstract, characters 518–702 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Embryogenic calli were 16.7 under 2,4-D alone.

Taxon
coconutt0
Treatment
2, 4-D alonee0
Outcome
embryogenic callie0
Direction
leaste0
Value
16.7e0
Comparator
125 µM 2, 4-D + 5 µM BAPe0

Verbatim

e0

“The highest embryogenic calli were observed in medium with 125 µM 2, 4-D + 5 µM BAP (100%) and the least was in medium with 2, 4-D alone (16.7) and in combination with 0.35 µM GA3 (0).”

✓ located verbatim in the source · abstract, characters 518–702 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Embryogenic calli were zero with GA3 combination.

Taxon
coconutt0
Treatment
in combination with 0.35 µM GA3e0
Outcome
embryogenic callie0
Direction
leaste0
Value
0e0
Comparator
125 µM 2, 4-D + 5 µM BAPe0

Verbatim

e0

“The highest embryogenic calli were observed in medium with 125 µM 2, 4-D + 5 µM BAP (100%) and the least was in medium with 2, 4-D alone (16.7) and in combination with 0.35 µM GA3 (0).”

✓ located verbatim in the source · abstract, characters 518–702 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

A kinetin, BAP, GA3 and NAA medium induced multiple shoots.

Taxon
coconutt0
Treatment
10 µM kinetin, 10 µM BAP, 0.5 µM GA3, and 200 µM NAAe0
Outcome
Multiple shoot inductione0

Verbatim

e0

“Multiple shoot induction was observed in medium supplemented with 10 µM kinetin, 10 µM BAP, 0.5 µM GA3, and 200 µM NAA.”

✓ located verbatim in the source · abstract, characters 703–822 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Shoot elongation peaked at 1.667 cm with 10 µM BAP.

Taxon
coconutt0
Treatment
10 µM BAPe0
Outcome
shoot elongatione0
Direction
Maximume0
Value
1.667 cme0
Comparator
5 µM BAPe0

Verbatim

e0

“Maximum shoot elongation (1.667 cm) was in medium containing 10 µM BAP and the least (0.811 cm) was in medium with 5 µM BAP.”

✓ located verbatim in the source · abstract, characters 823–947 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Shoot elongation was lowest at 0.811 cm with 5 µM BAP.

Taxon
coconutt0
Treatment
5 µM BAPe0
Outcome
shoot elongatione0
Direction
leaste0
Value
0.811 cme0
Comparator
10 µM BAPe0

Verbatim

e0

“Maximum shoot elongation (1.667 cm) was in medium containing 10 µM BAP and the least (0.811 cm) was in medium with 5 µM BAP.”

✓ located verbatim in the source · abstract, characters 823–947 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The highest root number was 8.33 under 5 µM IBA plus GA3.

Taxon
coconutt0
Treatment
5 µM IBA+ 0.5 µM GA3e0
Outcome
number of rootse0
Direction
higheste0
Value
8.33e0
Comparator
10 µM IBA+ 0.5 µM GA3e0

Verbatim

e0

“The highest response was observed in Y3 medium supplemented with 5 µM IBA+ 0.5 µM GA3 both with respect to the number of roots 8.33 and root length 5.10 cm while the least was with 10 µM IBA+ 0.5 µM GA3 with regard to the number of roots 3.33 and root length 2.83 cm.”

✓ located verbatim in the source · abstract, characters 1034–1301 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The longest roots were 5.10 cm under 5 µM IBA plus GA3.

Taxon
coconutt0
Treatment
5 µM IBA+ 0.5 µM GA3e0
Outcome
root lengthe0
Direction
higheste0
Value
5.10 cme0
Comparator
10 µM IBA+ 0.5 µM GA3e0

Verbatim

e0

“The highest response was observed in Y3 medium supplemented with 5 µM IBA+ 0.5 µM GA3 both with respect to the number of roots 8.33 and root length 5.10 cm while the least was with 10 µM IBA+ 0.5 µM GA3 with regard to the number of roots 3.33 and root length 2.83 cm.”

✓ located verbatim in the source · abstract, characters 1034–1301 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The lowest root number was 3.33 under 10 µM IBA plus GA3.

Taxon
coconutt0
Treatment
10 µM IBA+ 0.5 µM GA3e0
Outcome
number of rootse0
Direction
leaste0
Value
3.33e0
Comparator
5 µM IBA+ 0.5 µM GA3e0

Verbatim

e0

“The highest response was observed in Y3 medium supplemented with 5 µM IBA+ 0.5 µM GA3 both with respect to the number of roots 8.33 and root length 5.10 cm while the least was with 10 µM IBA+ 0.5 µM GA3 with regard to the number of roots 3.33 and root length 2.83 cm.”

✓ located verbatim in the source · abstract, characters 1034–1301 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The shortest roots were 2.83 cm under 10 µM IBA plus GA3.

Taxon
coconutt0
Treatment
10 µM IBA+ 0.5 µM GA3e0
Outcome
root lengthe0
Direction
leaste0
Value
2.83 cme0
Comparator
5 µM IBA+ 0.5 µM GA3e0

Verbatim

e0

“The highest response was observed in Y3 medium supplemented with 5 µM IBA+ 0.5 µM GA3 both with respect to the number of roots 8.33 and root length 5.10 cm while the least was with 10 µM IBA+ 0.5 µM GA3 with regard to the number of roots 3.33 and root length 2.83 cm.”

✓ located verbatim in the source · abstract, characters 1034–1301 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Survival after acclimatization was 25% in soil, sand and manure.

Taxon
coconutt0
Treatment
soil: sand: manure ratio (3:1:1)e0
Outcome
survival ratee0
Direction
higherinferrede0
Value
25%e0
Comparator
vermiculate mediume0

Verbatim

e0

“Acclimatization was achieved in media prepared with soil: sand: manure ratio (3:1:1) with 25% survival rate and vermiculate medium with 8.3% survival rate.”

✓ located verbatim in the source · abstract, characters 1302–1457 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Survival after acclimatization was 8.3% in vermiculate.

Taxon
coconutt0
Treatment
vermiculate mediume0
Outcome
survival ratee0
Direction
lowerinferrede0
Value
8.3%e0
Comparator
soil: sand: manure ratio (3:1:1)e0

Verbatim

e0

“Acclimatization was achieved in media prepared with soil: sand: manure ratio (3:1:1) with 25% survival rate and vermiculate medium with 8.3% survival rate.”

✓ located verbatim in the source · abstract, characters 1302–1457 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend somatic embryogenesis for coconut mass propagation.

Taxon
coconute0
Outcome
in vitro regeneration of coconut through somatic embryogenesis is a viable alternative for mass propagatione0

Verbatim

e0

“in vitro regeneration of coconut through somatic embryogenesis is a viable alternative for mass propagation.”

✓ located verbatim in the source · abstract, characters 1465–1573 · show in text ↑
t0

“coconut”

✓ located verbatim in the source · title, characters 25–32 · show in text ↑

indole-3-butyric acid · growth · Cocos nucifera (coconut palm)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. negative
See all 2 papers →

Gibberellic acid · growth · Cocos nucifera (coconut palm)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

2,4-D · growth · Cocos nucifera (coconut palm)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

N-benzyladenine · growth · Cocos nucifera (coconut palm)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

in vitro · survival · Cocos nucifera (coconut palm)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.