Abstract
Primary lateral root production on Pinus contorta seedlings was increased 5–10 fold by immersion in auxin solutions. Watering auxin solutions onto P. contorta seedlings growing in soil or compost induced the development of large numbers of primary lateral roots in the root collar region. The number of primary lateral roots which developed depended mainly upon the auxin used and its application rate, seedling age and to a lesser extent on the soil characteristics. Instability of transplanted pines is partly due to their lack of primary lateral roots and their inability to regenerate new ones after planting out; this instability may be overcome by using auxin treated seedlings. Potential practical applications of this technique are discussed.
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Claims 4
Claim · model-written summary
Immersion of Pinus contorta seedlings in auxin solutions increased primary lateral root production 5-10 fold.
- Taxon
- Pinus contorta
Pinus contortae0 - Treatment
- immersion in auxin solutionse0
- Outcome
- Primary lateral root productione0
- Direction
- increasede0
- Value
- 5–10 folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Primary lateral root production on Pinus contorta seedlings was increased 5–10 fold by immersion in auxin solutions”
Claim · model-written summary
Watering auxin solutions onto P. contorta seedlings in soil or compost induced large numbers of primary lateral roots in the root collar region.
- Taxon
- P. contortaPinus contortae0
- Organ / stage
- root collar regione0
- Treatment
- Watering auxin solutionse0
- Outcome
- development of large numbers of primary lateral rootse0
- Direction
- inducede0
- Setting
- soil or composte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Watering auxin solutions onto P. contorta seedlings growing in soil or compost induced the development of large numbers of primary lateral roots in the root collar region”
Claim · model-written summary
The number of primary lateral roots that developed depended mainly on the auxin used and its application rate and on seedling age, and to a lesser extent on soil characteristics.
- Taxon
- Pinus contortaPinus contortat0
- Treatment
- auxin used and its application ratee0
- Outcome
- number of primary lateral rootse0
- Qualifier
- seedling age and to a lesser extent on the soil characteristicse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of primary lateral roots which developed depended mainly upon the auxin used and its application rate, seedling age and to a lesser extent on the soil characteristics”
t0“Pinus contorta”
Claim · model-written summary
The authors suggest the instability of transplanted pines may be overcome by using auxin treated seedlings.
PinusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Instability of transplanted pines is partly due to their lack of primary lateral roots and their inability to regenerate new ones after planting out; this instability may be overcome by using auxin treated seedlings”
The same questions in other papers
class · growth · Pinus contorta (lodgepole pine)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.