Abstract
The objective of this study was to obtain information towards the establishment of tissue culture, rooting and greenhouse treatments by which to propagate 1/2'' stage Zantedeschia corms. Photosynthesis, stomatal conductance and rooting were measured in five cultivars grown on media containing growth hormone Benzyladenine (BA), at 3 mg 1⁻¹ (high BA) or 0.3 mg 1⁻¹ (low BA) in the final in vitro stage, and under ambient or 65 µmol s⁻¹ m⁻² (supplementary) PAR during rooting. Then, photosynthesis and growth of high and low BA plants greenhouse-grown under ambient, 90 µmol s⁻¹ m⁻² (moderate) and 180 µmol s⁻¹ m⁻² (high) PAR were measured. Low BA plants rooted better than high BA plants, but did not demonstrate better subsequent growth. High BA plants, possibly as a reaction to initial inhibition, demonstrated pronounced growth in response to increased greenhouse light intensities and resulting surplus dry matter was in some cases partitioned to corm rather than foliage development. In low BA plants, even though photosynthetic rates were higher, the response was not as pronounced and preferential partitioning of dry matter did not occur. Supplementary light had little or no effect on rooting. At least two cultivars demon- strated differing balances between inherent photosynthetic capacity and foliage production to achieve similar levels of corm development. Changes in photosynthesis caused by treatments were attributed in part to changes in stomatal conductance.
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Claims 8
Claim · model-written summary
Low BA plants rooted better than high BA plants.
- Taxon
- Zantedeschia
Zantedeschiat0 - Outcome
- rootede0
- Direction
- bettere0
- Comparator
- high BA plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Zantedeschia”
e0“Low BA plants rooted better than high BA plants”
e1“Low BA plants”
Claim · model-written summary
Low BA plants did not have better subsequent growth.
- Taxon
- ZantedeschiaZantedeschiat0
- Outcome
- subsequent growthe0
- Direction
- did not demonstrate bettere0
- Comparator
- high BA plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Zantedeschia”
e0“Low BA plants rooted better than high BA plants, but did not demonstrate better subsequent growth”
e1“Low BA plants”
Claim · model-written summary
High BA plants showed pronounced growth as greenhouse light increased.
- Taxon
- ZantedeschiaZantedeschiat0
- Outcome
- growthe0
- Direction
- pronouncede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Zantedeschia”
e0“High BA plants, possibly as a reaction to initial inhibition, demonstrated pronounced growth in response to increased greenhouse light intensities”
e1“High BA plants”
Claim · model-written summary
Surplus dry matter in high BA plants was sometimes partitioned to corms over foliage.
- Taxon
- ZantedeschiaZantedeschiat0
- Outcome
- surplus dry mattere0
- Direction
- partitionede0
- Comparator
- foliage developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Zantedeschia”
e0“resulting surplus dry matter was in some cases partitioned to corm rather than foliage development”
e1“high BA plants”
Claim · model-written summary
Low BA plants had higher photosynthetic rates.
- Taxon
- ZantedeschiaZantedeschiat0
- Treatment
- low BA plantse0
- Outcome
- photosynthetic ratese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Zantedeschia”
e0“In low BA plants, even though photosynthetic rates were higher”
Claim · model-written summary
Supplementary light had little or no effect on rooting.
- Taxon
- ZantedeschiaZantedeschiat0
- Outcome
- rootinge0
- Direction
- little or no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Zantedeschia”
e0“Supplementary light had little or no effect on rooting”
e1“Supplementary light”
Claim · model-written summary
At least two cultivars differed in photosynthetic capacity and foliage production balances while attaining similar corm development.
- Taxon
- ZantedeschiaZantedeschiat0
- Material
- two cultivarse0
- Outcome
- differing balances between inherent photosynthetic capacity and foliage productione0
- Direction
- differinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Zantedeschia”
e0“At least two cultivars demon- strated differing balances between inherent photosynthetic capacity and foliage production to achieve similar levels of corm development”
Claim · model-written summary
Treatment effects on photosynthesis were attributed partly to stomatal conductance changes.
- Taxon
- ZantedeschiaZantedeschiat0
- Outcome
- Changes in photosynthesise0
- Qualifier
- changes in stomatal conductancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Zantedeschia”
e0“Changes in photosynthesis caused by treatments were attributed in part to changes in stomatal conductance”
The same questions in other papers
N-benzyladenine · growth · ZantedeschiaPositive and negative results
1 paper in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
light · growth · ZantedeschiaPositive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- no effect
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.