| 释义 |
naphthaleneacetic, a.|ˌnæfθəliːnəˈsiːtɪk|
[f. naphthalene + acetic a.]
naphthaleneacetic acid: either of the two crystalline compounds, C10H7CH2COOH, obtained by replacing one of the hydrogen atoms of naphthalene by an acetic acid group; spec. α-naphthaleneacetic acid, which has the action of an auxin and is used to stimulate the rooting of plant cuttings, to initiate flowering of the pineapple, to prevent premature drop of fruit, and to improve the colour of apples.
1917Chem. Abstr. XI. 3876/2 (Index), Naphthalene-acetic acids. 1936Contrib. Boyce Thompson Inst. VIII. 78 Treating cuttings or shoots of Ilex, Taxus, Pachysandra, Hibiscus, Acer, and Chrysanthemum with preparations of indoleacetic, indolepropionic, indolebutyric, or naphthaleneacetic acids induced earlier rooting, increased the number of roots, and roots emerged from a greater area of stem tissue as compared with control cuttings. 1942Science 22 May 536/1 Low concentrations of α-naphthaleneacetic acid (the compound used most extensively) applied as foliage sprays induced formation of inflorescences in advance of the normal period, but high concentrations..delayed flowering far beyond that of the controls. 1968F. C. Steward Growth & Organization in Plants viii. 394 The application of auxin during the dark period eliminates the photoperiodic induction due to the dark period in a short-day plant like cocklebur. Auxins, whether IAA or a synthetic substitute like naphthalene acetic acid..are all active in this respect. |