Abstract
Abstract The top leaf of fresh softwood cuttings of ‘Marianna 2624’ plum ( Prunus cerasifera × Prunus munsoniana ) was exposed to 14 CO 2 and the effect of leaf area and indolebutyric acid (IBA) on rooting and distribution of 14 c was assessed. IBA enhanced the rooting of cuttings with 1/2 or 3 leaves, whereas leafless cuttings failed to root regardless of treatment. Most of the 14 C remained in the upper portion of the stem adjacent to the treated leaf; the mid-stem segment acquired about 40% of the activity. Little radioactivity reached the base of fresh cuttings, but upon rooting it accumulated 4 times the percentage of 14 c found in comparable non-rooting bases. In all cuttings the incorporation of 14 C into starch was much greater in the mid-stem than in the base. As much as 75% of the radioactivity in rooted bases was recovered in a residue remaining after ethanol soluble substances and starch were removed. The level of starch declined continually in the base but decreased in the mid-stem only at the end of the study. The concentration of sugars in both segments was relatively constant while that of sorbitol declined markedly and was hardly detectable in rooted bases. The largest loss of carbohydrates occurred in the bases treated with IBA. The similarity in levels and trends of carbohydrate utlization in the bases of cuttings with or without leaves indicated that in this cultivar the stimulatory effect of leaves on rooting is not associated with their being a source of carbohydrates.
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Claims 14
Claim · model-written summary
IBA enhanced rooting in plum cuttings with one-half or three leaves.
- Taxon
- plum
Prunus domesticae0 - Treatment
- IBAe1
- Outcome
- rooting of cuttingse1
- Direction
- enhancede1
- Qualifier
- 1/2 or 3 leavese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“IBA enhanced the rooting of cuttings with 1/2 or 3 leaves”
Claim · model-written summary
Leafless plum cuttings failed to root regardless of treatment.
- Taxon
- plumPrunus domesticae0
- Outcome
- failed to roote1
- Qualifier
- regardless of treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“leafless cuttings failed to root regardless of treatment”
Claim · model-written summary
Most radiocarbon remained in the upper stem adjacent to the treated leaf.
- Taxon
- plumPrunus domesticae0
- Organ / stage
- upper portion of the steme1
- Outcome
- 14 C remained in the upper portion of the steme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“Most of the 14 C remained in the upper portion of the stem adjacent to the treated leaf”
Claim · model-written summary
The mid-stem acquired about 40% of the radiocarbon activity.
- Taxon
- plumPrunus domesticae0
- Organ / stage
- mid-stem segmente1
- Outcome
- activitye1
- Value
- about 40%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“the mid-stem segment acquired about 40% of the activity”
Claim · model-written summary
Little radiocarbon reached the base of fresh cuttings.
- Taxon
- plumPrunus domesticae0
- Organ / stage
- basee1
- Outcome
- radioactivity reached the basee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“Little radioactivity reached the base of fresh cuttings”
Claim · model-written summary
Rooted bases accumulated four times the percentage of radiocarbon found in nonrooting bases.
- Taxon
- plumPrunus domesticae0
- Outcome
- percentage of 14 ce1
- Direction
- 4 timese1
- Value
- 4 timese1
- Comparator
- comparable non-rooting basese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“upon rooting it accumulated 4 times the percentage of 14 c found in comparable non-rooting bases”
Claim · model-written summary
Radiocarbon incorporation into starch was much greater in mid-stem than in the base.
- Taxon
- plumPrunus domesticae0
- Organ / stage
- mid-steme1
- Outcome
- incorporation of 14 C into starche1
- Direction
- much greatere1
- Comparator
- basee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“In all cuttings the incorporation of 14 C into starch was much greater in the mid-stem than in the base.”
Claim · model-written summary
Up to 75% of radioactivity in rooted bases was in residue left after ethanol solubles and starch were removed.
- Taxon
- plumPrunus domesticae0
- Outcome
- radioactivity in rooted basese1
- Value
- 75%e1
- Qualifier
- residue remaining after ethanol soluble substances and starch were removede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“As much as 75% of the radioactivity in rooted bases was recovered in a residue remaining after ethanol soluble substances and starch were removed.”
Claim · model-written summary
Starch declined continually in cutting bases.
- Taxon
- plumPrunus domesticae0
- Organ / stage
- basee1
- Outcome
- level of starche1
- Direction
- declined continuallye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“The level of starch declined continually in the base”
Claim · model-written summary
Mid-stem starch decreased only at the end of the study.
- Taxon
- plumPrunus domesticae0
- Organ / stage
- mid-steme1
- Outcome
- decreased in the mid-steme1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“decreased in the mid-stem only at the end of the study”
Claim · model-written summary
Sugar concentration was relatively constant in both segments.
- Taxon
- plumPrunus domesticae0
- Outcome
- concentration of sugarse1
- Direction
- relatively constante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“The concentration of sugars in both segments was relatively constant”
Claim · model-written summary
Sorbitol concentration declined markedly and was hardly detectable in rooted bases.
- Taxon
- plumPrunus domesticae0
- Organ / stage
- rooted basese1
- Outcome
- sorbitole1
- Direction
- declined markedlye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“that of sorbitol declined markedly and was hardly detectable in rooted bases”
Claim · model-written summary
The largest carbohydrate loss occurred in bases treated with IBA.
- Taxon
- plumPrunus domesticae0
- Organ / stage
- basese1
- Treatment
- IBAe1
- Outcome
- loss of carbohydratese1
- Direction
- largeste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“The largest loss of carbohydrates occurred in the bases treated with IBA.”
Claim · model-written summary
Carbohydrate utilization in bases was similar with and without leaves, suggesting leaves stimulate rooting without serving as a carbohydrate source.
- Taxon
- plumPrunus domesticae0
- Organ / stage
- leavese1
- Outcome
- stimulatory effect of leaves on rootinge1
- Qualifier
- not associated with their being a source of carbohydratese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plum”
e1“The similarity in levels and trends of carbohydrate utlization in the bases of cuttings with or without leaves indicated that in this cultivar the stimulatory effect of leaves on rooting is not associated with their being a source of carbohydrates.”
The same questions in other papers
indole-3-butyric acid · growth · Prunus domestica (plum)Positive and negative results
16 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
14 papers more in this group
See all 18 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.