Claim · model-written summary
Treated cotton leaves had accessory vascular bundles in the lamina, developing from an extensive adaxial meristem.
- Taxon
- cotton
Gossypium hirsutume0 - Organ / stage
- laminae6
- Treatment
- 2,4-D applied in sublethal dosage to the cotyledonse1
- Outcome
- accessory vascular bundlese6
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the terminal bud of cotton (Gossypium hirsutum L. var. Acala)”
e1“2,4-D applied in sublethal dosage to the cotyledons affects the structure and morphology, not of the apical meristem itself, but of the organs and tissues derived from it”
e6“In addition to laterally contiguous bundles formed in a manner similar to that in untreated plants, accessory vascular bundles are present in the lamina which develop from derivatives of an extensive adaxial meristem”
Title
Effect of 2,4-D upon the development of the cotton leaf
Ernest M. Gifford Hilgardia 1953. doi:10.3733/hilg.v21n18p605
Other claims from this paper (12)
- Intervention effect Sublethal 2,4-D applied to cotyledons altered the structure and morphology of organs and tissues derived from the terminal bud, but not of the apical meristem itself.
- Intervention effect 2,4-D-treated cotton plants resembled untreated plants in shoot apical meristem structure, though meristem dimensions differed.
- Intervention effect 2,4-D-treated cotton plants initiated new foliage leaves normally, resembling untreated plants.
- Intervention effect In treated cotton plants the earliest divisions of leaf blade development appeared normal.
- Intervention effect In treated cotton plants, subsequent leaf blade divisions were precociously and predominantly periclinal, forming a thick lamina.
- Intervention effect In treated cotton leaves, laterally contiguous vascular bundles formed in a manner similar to untreated plants.
- Observation A mature cotton leaf contains a large amount of vascular tissue surrounded in general by unspecialized parenchyma.
- Intervention effect 2,4-D-treated plants had xylem development retarded relative to untreated plants.
- Intervention effect 2,4-D-treated plants had sievetube element development accelerated relative to untreated plants.
- Intervention effect Xylem and sievetube elements differentiated in normal directions in the shoot of treated cotton.
- Observation In untreated cotton shoots, procambium development is continuous and acropetal.
- Intervention effect 2,4-D affected foliage-leaf primordia present at application and some primordia that developed later in cotton.