Abstract
Tétu, T., Sangwan, R. S. and Sangwan-Norreel, B. S. 1987. Hormonal control of organogenesis and somatic embryogenesis in Beta vulgaris callus.—J. exp. Bot. 38: 506–517. Three main pathways of morphogenesis viz: root formation, shoot formation and somatic embryogenesis, have been observed in the callus derived from various explants of Beta vulgaris L. Growth hormones but not the basal media, determined the morphogenetic potentiality of the callus. Auxin alone induced root formation. A combination of an auxin (naphthalene acetic acid) and a cytokinin (6-benzylaminopurine) gave only infrequent bud formation with very low percentages (a maximum of 12%). Regular bud formation with high percentages (52%) occurred when an anti-auxin (2,3,5-triiodobenzoic acid) with a cytokinin (BAP) was used. Shoots (2–3 cm) were transferred to a rooting medium. Roots were formed readily in about 95% of the shoots. Histological studies showed that callus first formed meristematic zones and then shoot primordia developed in these zones. Somatic embryos were formed only in the calli derived from petiole explants. Multiple hormonal sequences were necessary for the induction and development of these somatic embryos. The embryos developed into normal plants when transferred, at the cotyledonary stage, to a hormone free basal medium.
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Claims 10
Claim · model-written summary
Beta vulgaris callus produced roots, shoots and somatic embryos.
- Taxon
- Beta vulgaris L.
Beta vulgarise0 - Organ / stage
- calluse0
- Outcome
- root formation, shoot formation and somatic embryogenesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root formation, shoot formation and somatic embryogenesis, have been observed in the callus derived from various explants of Beta vulgaris L.”
Claim · model-written summary
Growth hormones, rather than basal media, determined callus morphogenetic potential.
- Taxon
- Beta vulgaris L.Beta vulgarise1
- Treatment
- Growth hormonese0
- Outcome
- morphogenetic potentiality of the calluse0
- Comparator
- basal mediae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth hormones but not the basal media, determined the morphogenetic potentiality of the callus”
e1“Beta vulgaris L.”
Claim · model-written summary
Auxin alone induced root formation in Beta vulgaris callus.
- Taxon
- Beta vulgaris L.Beta vulgarise1
- Treatment
- Auxin alonee0
- Outcome
- root formatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Auxin alone induced root formation”
e1“Beta vulgaris L.”
Claim · model-written summary
Auxin plus cytokinin produced infrequent bud formation, at most 12%.
- Taxon
- Beta vulgaris L.Beta vulgarise1
- Treatment
- A combination of an auxin (naphthalene acetic acid) and a cytokinin (6-benzylaminopurine)e0
- Outcome
- bud formatione0
- Direction
- infrequente0
- Value
- 12%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A combination of an auxin (naphthalene acetic acid) and a cytokinin (6-benzylaminopurine) gave only infrequent bud formation with very low percentages (a maximum of 12%)”
e1“Beta vulgaris L.”
Claim · model-written summary
Anti-auxin plus cytokinin produced regular bud formation at 52%.
- Taxon
- Beta vulgaris L.Beta vulgarise1
- Treatment
- an anti-auxin (2,3,5-triiodobenzoic acid) with a cytokinin (BAP)e0
- Outcome
- bud formatione0
- Direction
- high percentagese0
- Value
- 52%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regular bud formation with high percentages (52%) occurred when an anti-auxin (2,3,5-triiodobenzoic acid) with a cytokinin (BAP) was used”
e1“Beta vulgaris L.”
Claim · model-written summary
About 95% of transferred shoots rooted on rooting medium.
- Taxon
- Beta vulgaris L.Beta vulgarise1
- Organ / stage
- Shootse0
- Treatment
- a rooting mediume0
- Outcome
- Roots were formede0
- Value
- 95%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoots (2–3 cm) were transferred to a rooting medium. Roots were formed readily in about 95% of the shoots”
e1“Beta vulgaris L.”
Claim · model-written summary
Meristematic zones formed before shoot primordia developed in callus.
- Taxon
- Beta vulgaris L.Beta vulgarise1
- Organ / stage
- calluse0
- Outcome
- meristematic zones and then shoot primordiae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus first formed meristematic zones and then shoot primordia developed in these zones”
e1“Beta vulgaris L.”
Claim · model-written summary
Somatic embryos formed only in calli derived from petiole explants.
- Taxon
- Beta vulgaris L.Beta vulgarise1
- Organ / stage
- petiole explantse0
- Outcome
- Somatic embryos were formede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Somatic embryos were formed only in the calli derived from petiole explants”
e1“Beta vulgaris L.”
Claim · model-written summary
Multiple hormonal sequences were necessary to induce and develop somatic embryos.
- Taxon
- Beta vulgaris L.Beta vulgarise1
- Treatment
- Multiple hormonal sequencese0
- Outcome
- induction and development of these somatic embryose0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Multiple hormonal sequences were necessary for the induction and development of these somatic embryos”
e1“Beta vulgaris L.”
Claim · model-written summary
Cotyledonary embryos developed into normal plants on hormone free basal medium.
- Taxon
- Beta vulgaris L.Beta vulgarise1
- Organ / stage
- cotyledonary stagee0
- Treatment
- a hormone free basal mediume0
- Outcome
- developed into normal plantse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The embryos developed into normal plants when transferred, at the cotyledonary stage, to a hormone free basal medium”
e1“Beta vulgaris L.”
The same questions in other papers
class · growth · Beta vulgaris (beet)Positive and negative results
9 papers in the same direction as this paper · 3 in the opposite direction
- positive
- no effect
- no effect
9 papers more in this group
See all 13 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.