Abstract
Neoformation of flower buds was studied in thin cell layers derived from floral branches of Nicotiana tabacum L. Organogenesis was found to be expressed in different ways according to the kind of auxin and cytokinin present in the culture medium. In the presence of synthetic auxins (NAA, CTA), more flower buds were generated than with the natural auxins (IAA, IBA), if the culture medium was also supplemented with a cytokinin. These conditions also stimulated the development of the buds to flowers or inflorescences. The most active cytokinin was BA. Natural cytokinins (zeatin, IPA) appeared much less active but led to remarkable development of roots together with flower buds. An organogenetic effect of 2,4-D was observed in this experimental system, leading to the conclusion that organogenetic activity of cytokinins and auxins in thin cell layer cultures strongly depends on the molecular structure of the growth regulators.
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Claims 7
Claim · model-written summary
More flower buds were generated with synthetic auxins (NAA, CTA) than with natural auxins (IAA, IBA) when the medium also contained a cytokinin.
- Taxon
- Nicotiana tabacum
Nicotiana tabacume0 - Organ / stage
- thin cell layerse0
- Treatment
- synthetic auxins (NAA, CTA)e1
- Outcome
- flower budse1
- Direction
- moree1
- Qualifier
- if the culture medium was also supplemented with a cytokinine1
- Comparator
- natural auxins (IAA, IBA)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neoformation of flower buds was studied in thin cell layers derived from floral branches of Nicotiana tabacum L”
e1“In the presence of synthetic auxins (NAA, CTA), more flower buds were generated than with the natural auxins (IAA, IBA), if the culture medium was also supplemented with a cytokinin”
Claim · model-written summary
Synthetic auxins with a cytokinin stimulated the development of buds into flowers or inflorescences.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- synthetic auxins (NAA, CTA)e1
- Outcome
- development of the buds to flowers or inflorescencese2
- Direction
- stimulatede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neoformation of flower buds was studied in thin cell layers derived from floral branches of Nicotiana tabacum L”
e1“In the presence of synthetic auxins (NAA, CTA), more flower buds were generated than with the natural auxins (IAA, IBA), if the culture medium was also supplemented with a cytokinin”
e2“These conditions also stimulated the development of the buds to flowers or inflorescences”
Claim · model-written summary
BA was the most active cytokinin.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- BAe3
- Outcome
- most active cytokinine3
- Direction
- most activee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neoformation of flower buds was studied in thin cell layers derived from floral branches of Nicotiana tabacum L”
e3“The most active cytokinin was BA”
Claim · model-written summary
Natural cytokinins (zeatin, IPA) were much less active.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- Natural cytokinins (zeatin, IPA)e4
- Outcome
- activee4
- Direction
- much lesse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neoformation of flower buds was studied in thin cell layers derived from floral branches of Nicotiana tabacum L”
e4“Natural cytokinins (zeatin, IPA) appeared much less active but led to remarkable development of roots together with flower buds”
Claim · model-written summary
Natural cytokinins (zeatin, IPA) led to remarkable development of roots.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- Natural cytokinins (zeatin, IPA)e4
- Outcome
- development of rootse4
- Direction
- remarkable developmente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neoformation of flower buds was studied in thin cell layers derived from floral branches of Nicotiana tabacum L”
e4“Natural cytokinins (zeatin, IPA) appeared much less active but led to remarkable development of roots together with flower buds”
Claim · model-written summary
An organogenetic effect of 2,4-D was observed in the tobacco thin cell layer system.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- 2,4-De5
- Outcome
- organogenetic effecte5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neoformation of flower buds was studied in thin cell layers derived from floral branches of Nicotiana tabacum L”
e5“An organogenetic effect of 2,4-D was observed in this experimental system”
Claim · model-written summary
Organogenetic activity of cytokinins and auxins in thin cell layer cultures depends strongly on the molecular structure of the growth regulators, as the authors conclude.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- cytokinins and auxinse6
- Outcome
- organogenetic activitye6
- Qualifier
- molecular structure of the growth regulatorse6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neoformation of flower buds was studied in thin cell layers derived from floral branches of Nicotiana tabacum L”
e6“organogenetic activity of cytokinins and auxins in thin cell layer cultures strongly depends on the molecular structure of the growth regulators”
The same questions in other papers
synthetic auxin · growth · Nicotiana tabacum (tobacco)Positive and negative results
1 in the opposite direction
- negative
1-naphthaleneacetic acid · growth · Nicotiana tabacum (tobacco)Results agree
9 papers in the same direction as this paper
- positive
- positive
- positive
6 papers more in this group
See all 10 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.