Claim · model-written summary
Substituting levulose or cane sugar for dextrose did not improve growth.
- Taxon
- Corn
Zea mays subsp. mayst0 - Treatment
- levulose, cane sugare0
- Outcome
- benefite0
- Direction
- no benefite0
- Comparator
- dextrosee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Root Tips”
e0“The substitution of levulose, cane sugar, xylose, or maltose for dextrose in solution C was of no benefit”
Title
Limited Growth and Abnormalities in Excised Corn Root Tips
William J. Robbins; Virginia B. White Botanical Gazette 1936. doi:10.1086/334634
Other claims from this paper (18)
- Observation Excised corn root tips in solution C showed limited growth and occasional abnormalities.
- Observation Modified Pfeffer solution produced similar limited growth and abnormalities.
- Association Growth in solution C varied with dextrose brand.
- Intervention effect Growth with xylose was very poor.
- Intervention effect Growth with maltose was very poor.
- Intervention effect Agar, filter paper, starch, yeast, or manganese, boron and zinc salts improved growth.
- Intervention effect Qualitative filter paper at one half sheet per 30 cc gave the best growth results.
- Intervention effect Pretreatment on agar or moist filter paper favored later growth in solution C.
- Intervention effect Moist-atmosphere exposure or washing in redistilled water did not benefit later growth.
- Intervention effect Recutting roots after filter-paper pretreatment did not change subsequent growth.
- Intervention effect More aeration increased growth and delayed abnormalities, though less than agar or filter paper.
- Intervention effect Changing acidity, salt and iron sources, or adding several tested supplements was not beneficial.
- Intervention effect Pantothenic acid sometimes benefited growth.
- Intervention effect Other named culture solutions were no more effective than solution C.
- Observation One-millimeter root tips reached 61.2 cm maximum growth, 0.9 cm per day.
- Observation Two-millimeter root tips reached 85.0 cm maximum growth, 1.4 cm per day.
- Observation Ten-millimeter root tips reached 98.2 cm maximum growth, 2.4 cm per day.
- Mechanism Poor growth in solution C was attributed partly to inorganic deficiency.