Abstract
Abstract The growth response (increase in weight) of cultured explants from seedling date ( Phoenix dactylifera L.) and mature coconut ( Cocos nucifera L. cv. Malayan Dwarf) palms to source and concentration of organic nitrogen. carbohydrate, auxins, cytokinins and gibberellins was examined. Growth was strongly stimulated by the presence of auxins (10 −7 to 10 −6 M ), cytokinins (10 −6 to 10 −5 M ), high concentrations of sucrose (0.2 M ), and in the absence of NH 4 Cl, by organic sources of reduced nitrogen. Higher concentrations of auxin (2,4‐D or NAA at 10 −6 to 10 −5 M ) which still stimulated growth of Phoenix tissue, proved inhibitory to growth of freshly excised Cocos tissues. Explants from both palms initiated roots when subcultured on a medium with increased levels of auxin (NAA, 2.5 × 10 −6 to 2.5 × 10 −5 M ) and reduced levels of cytokinin (6‐BAP, 5 × 10 −8 M ). Isolated roots excised from these explants continued growth and produced new laterals when subcultured on media with GA 3 (5 × 10 −7 M ) and reduced levels of auxin, cytokinin, and either minerals or sucrose.
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Claims 7
Claim · model-written summary
Phoenix dactylifera L. explant growth was stimulated by auxins, cytokinins, sucrose and organic reduced nitrogen.
- Taxon
- Phoenix dactylifera L.
Phoenix dactyliferae1 - Treatment
- auxins (10 −7 to 10 −6 M )e0
- Outcome
- Growthe0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth was strongly stimulated by the presence of auxins (10 −7 to 10 −6 M ), cytokinins (10 −6 to 10 −5 M ), high concentrations of sucrose (0.2 M ), and in the absence of NH 4 Cl, by organic sources of reduced nitrogen”
e1“seedling date ( Phoenix dactylifera L.)”
Claim · model-written summary
Cocos nucifera L. cv. Malayan Dwarf explant growth was stimulated by auxins, cytokinins, sucrose and organic reduced nitrogen.
- Taxon
- Cocos nucifera L. cv. Malayan Dwarf
Cocos nuciferae1 - Treatment
- auxins (10 −7 to 10 −6 M )e0
- Outcome
- Growthe0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth was strongly stimulated by the presence of auxins (10 −7 to 10 −6 M ), cytokinins (10 −6 to 10 −5 M ), high concentrations of sucrose (0.2 M ), and in the absence of NH 4 Cl, by organic sources of reduced nitrogen”
e1“mature coconut ( Cocos nucifera L. cv. Malayan Dwarf)”
Claim · model-written summary
Higher auxin concentrations still stimulated Phoenix tissue growth.
- Treatment
- auxin (2,4‐D or NAA at 10 −6 to 10 −5 M )e0
- Outcome
- growth of Phoenix tissuee0
- Direction
- stimulatede0
PhoenixNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher concentrations of auxin (2,4‐D or NAA at 10 −6 to 10 −5 M ) which still stimulated growth of Phoenix tissue”
Claim · model-written summary
Higher auxin concentrations inhibited growth of freshly excised Cocos tissues.
- Treatment
- auxin (2,4‐D or NAA at 10 −6 to 10 −5 M )e0
- Outcome
- growth of freshly excised Cocos tissuese0
- Direction
- inhibitorye0
Not reportedComparator
Verbatim
e0“Higher concentrations of auxin (2,4‐D or NAA at 10 −6 to 10 −5 M ) which still stimulated growth of Phoenix tissue, proved inhibitory to growth of freshly excised Cocos tissues”
Claim · model-written summary
Phoenix dactylifera L. explants initiated roots on increased auxin and reduced cytokinin medium.
- Taxon
- Phoenix dactylifera L.Phoenix dactyliferae1
- Treatment
- increased levels of auxin (NAA, 2.5 × 10 −6 to 2.5 × 10 −5 M ) and reduced levels of cytokinin (6‐BAP, 5 × 10 −8 M )e0
- Outcome
- initiated rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Explants from both palms initiated roots when subcultured on a medium with increased levels of auxin (NAA, 2.5 × 10 −6 to 2.5 × 10 −5 M ) and reduced levels of cytokinin (6‐BAP, 5 × 10 −8 M )”
e1“seedling date ( Phoenix dactylifera L.)”
Claim · model-written summary
Cocos nucifera L. cv. Malayan Dwarf explants initiated roots on increased auxin and reduced cytokinin medium.
- Taxon
- Cocos nucifera L. cv. Malayan DwarfCocos nuciferae1
- Treatment
- increased levels of auxin (NAA, 2.5 × 10 −6 to 2.5 × 10 −5 M ) and reduced levels of cytokinin (6‐BAP, 5 × 10 −8 M )e0
- Outcome
- initiated rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Explants from both palms initiated roots when subcultured on a medium with increased levels of auxin (NAA, 2.5 × 10 −6 to 2.5 × 10 −5 M ) and reduced levels of cytokinin (6‐BAP, 5 × 10 −8 M )”
e1“mature coconut ( Cocos nucifera L. cv. Malayan Dwarf)”
Claim · model-written summary
Isolated roots continued growth and produced new laterals on GA3 medium with reduced auxin, cytokinin and minerals or sucrose.
- Taxon
- Phoenix dactylifera L.Phoenix dactyliferae1
- Organ / stage
- Isolated rootse0
- Treatment
- media with GA 3 (5 × 10 −7 M ) and reduced levels of auxin, cytokinin, and either minerals or sucrosee0
- Outcome
- continued growth and produced new lateralse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolated roots excised from these explants continued growth and produced new laterals when subcultured on media with GA 3 (5 × 10 −7 M ) and reduced levels of auxin, cytokinin, and either minerals or sucrose”
e1“cultured explants from seedling date ( Phoenix dactylifera L.) and mature coconut ( Cocos nucifera L. cv. Malayan Dwarf) palms”
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See all 51 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.