Paper · 2011

Influences of Genotype and Explant on Callus Induction and Shoot Regeneration in Sunflower (Helianthus annuus L.)

Melek Bayraktaroğlu; Nazan Dağüstü

5
claims
9
verbatim quotes
1
citations
1
research areas
—
Not open access

Abstract

In vitro regeneration was performed with the aim of developing efficient callus and shoot regeneration from different explants of sunflower (Helianthus annuus L.). The 6 genotypes (RHA10, RHA 14, RHA15, PR6404, N Record 109/ Sanay 3-5, N Record 109/ Sera) were used as plant materials. The roots, hypocotyls and cotyledons were excised from 4 day-old seedlings and cultured on embryo induction medium (EIM) supplemented with Benzylaminopurine (BAP), Naphthaleneacetic acid (NAA) and Gibberellic acid (GA3). The experiments were kept in 18/6 hour light/dark photoperiod at 26± 2 ℃ for four weeks. The rates of callus and root organ formation on explants were 67%-100% and 7%-31% respectively, depending on the genotype. Root explants produced statistically high callus formation (2.6 score) compared to cotyledon (2.0 score) and hypocotyl explants (2.5 score) at all sunflower genotypes used. The highest shoot regeneration was obtained from RHA15 (7%) while PR6404 (100%) produced the highest callus formation.

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Claims 5

Observationobservedoriginal resultmeasured

Claim · model-written summary

Callus formation rates on sunflower explants were 67%-100%, depending on genotype.

Taxon
sunflowerHelianthus annuuse2
Organ / stage
explantse1
Outcome
calluse1
Value
67%-100%e1
Qualifier
depending on the genotypee1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The rates of callus and root organ formation on explants were 67%-100% and 7%-31% respectively, depending on the genotype”

✓ located verbatim in the source · abstract, characters 596–717 · show in text ↑
e2

“sunflower (Helianthus annuus L.)”

✓ located verbatim in the source · abstract, characters 130–162 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Root organ formation rates on sunflower explants were 7%-31%, depending on genotype.

Taxon
sunflowerHelianthus annuuse2
Organ / stage
explantse1
Outcome
root organ formatione1
Value
7%-31%e1
Qualifier
depending on the genotypee1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The rates of callus and root organ formation on explants were 67%-100% and 7%-31% respectively, depending on the genotype”

✓ located verbatim in the source · abstract, characters 596–717 · show in text ↑
e2

“sunflower (Helianthus annuus L.)”

✓ located verbatim in the source · abstract, characters 130–162 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Root explants produced statistically higher callus formation than cotyledon and hypocotyl explants in all sunflower genotypes used.

Taxon
sunflowerHelianthus annuuse3
Treatment
Root explantse3
Outcome
callus formatione3
Direction
highe3
Value
2.6 scoree3
Qualifier
compared to cotyledon (2.0 score) and hypocotyl explants (2.5 score)e3
Comparator
cotyledone3

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e3

“Root explants produced statistically high callus formation (2.6 score) compared to cotyledon (2.0 score) and hypocotyl explants (2.5 score) at all sunflower genotypes used”

✓ located verbatim in the source · abstract, characters 719–890 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

RHA15 gave the highest shoot regeneration, 7%, among the sunflower genotypes.

Taxon
sunflowerHelianthus annuuse2
Material
RHA15e4
Outcome
shoot regeneratione4
Value
7%e4
Qualifier
higheste4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e2

“sunflower (Helianthus annuus L.)”

✓ located verbatim in the source · abstract, characters 130–162 · show in text ↑
e4

“The highest shoot regeneration was obtained from RHA15 (7%)”

✓ located verbatim in the source · abstract, characters 892–951 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

PR6404 gave the highest callus formation, 100%, among the sunflower genotypes.

Taxon
sunflowerHelianthus annuuse2
Material
PR6404e5
Outcome
callus formatione5
Value
100%e5
Qualifier
higheste5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e2

“sunflower (Helianthus annuus L.)”

✓ located verbatim in the source · abstract, characters 130–162 · show in text ↑
e5

“while PR6404 (100%) produced the highest callus formation”

✓ located verbatim in the source · abstract, characters 952–1009 · show in text ↑

in vitro · growth · Helianthus annuus (common sunflower)Positive and negative results

36 papers: 22 positive, 14 negative or no effect

21 papers in the same direction as this paper · 14 in the opposite direction

  1. positive
  2. negative
  3. no effect

32 papers more in this group

See all 36 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.