Abstract
Dilute alkali extracts of leaves from size-controlling rootstocks inhibited the growth of stratified apple seeds. Correlation coefficients of −0.9140** and −0.7292* exist between the vigor of the rootstocks and the respective growth of apple and wheat seedlings in the leaf extracts. The crude extract was chromatographed in isopropanol:ammonia:water (10:1:1). Two zones of growth inhibition were detected using a watercress bioassay. These zones were at 0 to 0.1 and 0.4 to 0.5 R f units. The amount of growth made by the watercress was in the same ratio as the known vigor of the rootstocks M.II, M.VII, and M.IX. Measurement of the rate of indoleacetic acid oxidation showed that the material at an R f 0.4 to 0.6 affected IAA breakdown. The more dwarfing rootstocks stimulated the oxidation of IAA. The significance of the results are discussed in relation to the dwarfing of apple rootstocks.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Leaf extracts from size-controlling rootstocks inhibited stratified apple seed growth.
- Taxon
- apple
Malus domesticae0 - Treatment
- Dilute alkali extracts of leaves from size-controlling rootstockse0
- Outcome
- growth of stratified apple seedse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dilute alkali extracts of leaves from size-controlling rootstocks inhibited the growth of stratified apple seeds.”
Claim · model-written summary
Rootstock vigor correlated negatively with apple seedling growth in leaf extracts.
- Taxon
- appleMalus domesticae0
- Material
- rootstockse0
- Outcome
- growth of applee0
- Direction
- −0.9140**e0
- Value
- −0.9140**e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Correlation coefficients of −0.9140** and −0.7292* exist between the vigor of the rootstocks and the respective growth of apple and wheat seedlings in the leaf extracts.”
Claim · model-written summary
Rootstock vigor correlated negatively with wheat seedling growth in leaf extracts.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- leaf extractse0
- Outcome
- growth of apple and wheat seedlingse0
- Direction
- −0.7292*e0
- Value
- −0.7292*e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Correlation coefficients of −0.9140** and −0.7292* exist between the vigor of the rootstocks and the respective growth of apple and wheat seedlings in the leaf extracts.”
Claim · model-written summary
Two inhibitory zones were found in a watercress bioassay.
- Taxon
- watercress
Nasturtium officinalee0 - Outcome
- zones of growth inhibitione0
- Value
- 0 to 0.1 and 0.4 to 0.5 R f unitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two zones of growth inhibition were detected using a watercress bioassay. These zones were at 0 to 0.1 and 0.4 to 0.5 R f units.”
Claim · model-written summary
Watercress growth tracked the known vigor ratio of three apple rootstocks.
- Taxon
- watercressNasturtium officinalee0
- Material
- rootstocks M.II, M.VII, and M.IXe0
- Outcome
- amount of growthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of growth made by the watercress was in the same ratio as the known vigor of the rootstocks M.II, M.VII, and M.IX.”
Claim · model-written summary
The fraction at R f 0.4 to 0.6 affected IAA breakdown.
- Taxon
- appleMalus domesticat0
- Treatment
- material at an R f 0.4 to 0.6e0
- Outcome
- IAA breakdowne0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the material at an R f 0.4 to 0.6 affected IAA breakdown”
t0“APPLE ROOTSTOCKS”
Claim · model-written summary
More dwarfing apple rootstocks stimulated IAA oxidation.
- Taxon
- APPLEMalus domesticat0
- Material
- rootstockse0
- Outcome
- oxidation of IAAe0
- Direction
- stimulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The more dwarfing rootstocks stimulated the oxidation of IAA.”
t0“APPLE”
The same questions in other papers
botanical · growth · Malus domestica (apple)Positive and negative results
1 paper in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 papers →grafting · growth · Malus domestica (apple)Positive and negative results
16 papers in the same direction as this paper · 24 in the opposite direction
- positive
- positive
- positive
37 papers more in this group
See all 41 papers →alkalinity · growth · Malus domestica (apple)Results agree
2 papers in the same direction as this paper
- negative
- 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.