Abstract
The in vitro maintaining and propagation of sunflower plants is very important for biotechnological manipulations. The possibilities for a long-term in vitro maintaining of 4 inbreeding sunflower lines have been studied. The simullaneous flowering of all propagated plants after the 4-th transfer of material sustains as a main obstacle for successful long-term propagation. The influence of light, naringin application and nutrient media composition have been studied. The variation in culture conditions did not lead to changes in flowering behavior. For the fist time for sunflower the endogenous IAA, ABA and cytokinins content changes have been followed during the in vitro culture period. All the hormones dropped down to very low levels just before flower initiation.
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Claims 3
Claim · model-written summary
All propagated sunflower plants flowered simultaneously after the fourth material transfer, obstructing long term propagation.
- Taxon
- Sunflower
Helianthus annuust0 - Organ / stage
- after the 4-th transfer of materiale0
- Outcome
- simullaneous flowering of all propagated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The simullaneous flowering of all propagated plants after the 4-th transfer of material sustains as a main obstacle for successful long-term propagation.”
t0“Sunflower”
Claim · model-written summary
Variation in light, naringin application and nutrient medium composition did not change sunflower flowering behavior.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- variation in culture conditionse0
- Outcome
- flowering behaviore0
- Direction
- did not lead to changese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The influence of light, naringin application and nutrient media composition have been studied. The variation in culture conditions did not lead to changes in flowering behavior.”
t0“Sunflower”
Claim · model-written summary
Endogenous IAA, ABA and cytokinins levels in sunflower fell to very low levels just before flower initiation.
- Taxon
- SunflowerHelianthus annuust0
- Organ / stage
- before flower initiatione0
- Outcome
- endogenous IAA, ABA and cytokinins contente1
- Direction
- dropped downe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the hormones dropped down to very low levels just before flower initiation.”
e1“the endogenous IAA, ABA and cytokinins content changes have been followed during the in vitro culture period.”
t0“Sunflower”
The same questions in other papers
in vitro · phenology · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- negative
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.