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auxin 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈôksin/,
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auxins, plural;
  1. A plant hormone that causes the elongation of cells in shoots and is involved in regulating plant growth

  1. a plant hormone that promotes root formation and bud growth
  2. Auxins are a class of plant growth substance and morphogens (often called phytohormone or plant hormone). Auxins have an essential role in coordination of many growth and behavioral processes in the plant life cycle. ...
  3. (AUXINS) plant growth hormones; some are produced by ectomycorrhizal fungi.
  4. (Auxins) A natural or artificial substance controlling the growth of shoots, roots, etc.
  5. (Auxins) Plant components (chemical, hormone) affecting speed and form of growth.
  6. (Auxins) Plant hormones that have a variety of effects on the cellular responses of plants. For example development of leaves and fruit, also formation of secondary growth.
  7. (Auxins) Plant hormones that stimulate plant cell growth, particularly the growth of new roots. Auxins are usually sold as rooting powder, but nurseries also use liquid forms for some plants.
  8. (auxins) A group of hormones involved in controlling plant growth and other functions; once thought responsible for phototropism by causing the cells on the shaded side of a plant to elongate, thereby causing the plant to bend toward the light.
  9. A hormone that controls plant growth. Used by many plant growers.
  10. Plant hormone produced in the terminal bud. Transported in the phloem, located in the bark, from tip to root. Inhibits branching from lateral buds.
  11. Natural hormone produced in the apical regions (the tips of the stems). Auxin inhibits growth of lateral buds (those on the sides of the stem). This is why when you cut the top of the stem, the side shoots grow.
  12. Indole-3-acetic acid (IAA). Growth hormone produced by African Violets and other plants. Often used in organic rooting powders to encourage root growth. ...
  13. One of the best known and most important plant hormones. Most abundantly produced in a plant's actively growing tips. Generally stimulates growth by cell division in the tip region and by cell elongation lower down the shoot. ...
  14. compound regulating the growth of plants.
  15. (Gr. auxein, to increase)  A group of plant growth regulators (natural or synthetic) which stimulate cell division, enlargement, apical dominance, root initiation, and flowering. One naturally produced auxin is indole-acetic acid (IAA).
  16. A plant growth hormone usually concentrated in the apical bud.
  17. substances found in places such as plant sprouts and human urine which stimulates growth in plant tissues promoting root formation.
  18. Plant hormones that works on several functions in the plant. It is produced in the leaves, and causes new root growth, elongation of branches, setting of flowers and fruits, shedding of leaves i.e.
  19. One of five classes of plant hormone. Stimulates cells in seedlings to elongate.
  20. classification of plant hormones; auxins are responsible for foliage and root elongation.
  21. a plant hormone able to control growth
  22. A class of plant hormones that regulate growth. Plant auxins include: Indole-3-acetic acid (IAA), indole-3-butyric acid (IBA), 4-chloroindoleacetic acid (4-Cl-IAA) and phenylacetic acid (PAA). Synthetic auxins can be used as plant growth regulators. Some herbicides are inhibitory analogs of auxins.
  23. The hormone regulating the bloom cycle
  24. a plant growth regulating substance
  25. One of several hormones occurring in plants which regulates certain aspects of growth. They can be produced synthetically and are sometimes used commercially as herbicides or to promote flowering or other types of plant growth.