Claim · model-written summary
Omission of potassium, magnesium, sulfur, nitrogen or phosphorus sometimes caused hypocotyl collapse.
- Taxon
- Phaseolus vulgaris L.
Phaseolus vulgarist0 - Treatment
- minus potassium, magnesium, sulfur, nitrogen, or phosphoruse0
- Outcome
- occasional plants developed hypocotyl collapse symptomse0
- Comparator
- complete nutriente0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When seedlings were supplied with a complete nutrient solution, containing calcium at 100 micrograms per gram, but minus potassium, magnesium, sulfur, nitrogen, or phosphorus, occasional plants developed hypocotyl collapse symptoms; however, the lengths of hypocotyls varied little from those of controls grown in complete nutrient.”
t0“Phaseolus vulgaris L.”
Title
Calcium Deficiency of Dark-grown Seedlings of Phaseolus vulgaris L.
Katie Helms PLANT PHYSIOLOGY 1971. doi:10.1104/pp.47.6.799
Other claims from this paper (11)
- Mechanism Hypocotyl collapse in dark-grown Pinto bean seedlings was attributed to calcium deficiency.
- Observation No associated pathogen was detected in collapsed bean seedlings.
- Intervention effect Increasing calcium supply reduced the number of bean seedlings with hypocotyl collapse.
- Intervention effect Increasing calcium supply increased mean hypocotyl length in bean seedlings.
- Intervention effect Omission of those nutrients changed hypocotyl length little relative to complete nutrient.
- Intervention effect Raising calcium in deficient solutions to 200 micrograms per gram markedly reduced hypocotyl collapse.
- Intervention effect Without calcium, bean seedlings developed deficiency symptoms regardless of seed size or initial seed calcium.
- Intervention effect External calcium increased hypocotyl length in five Phaseolus vulgaris cultivars.
- Intervention effect External calcium increased hypocotyl length in one Soja max cultivar.
- Intervention effect External calcium similarly increased epicotyl growth in Vicia faba.
- Intervention effect External calcium did not elicit the same epicotyl growth response in Pisum sativum.