Betekenis van:
duckweed

Voorbeeldzinnen

1. A flow-through testing procedure with duckweed (Lemna minor L.).
2. Water Quality — Determination of the Toxic Effect of Water Constituents and Waste Water to Duckweed (Lemna minor) — Duckweed Growth Inhibition Test.
3. Water quality — Determination of growth inhibition (7-d) Lemna minor, duckweed.
4. Frond: is an individual/single ‘leaf-like’ structure of a duckweed plant.
5. This response variable should not be used for comparing the sensitivity to toxicants among duckweed species or even different clones.
6. This Testing Method is designed to assess the toxicity of substances to freshwater aquatic plants of the genus Lemna (duckweed).
7. Short descriptions of duckweed species that have been used for toxicity testing are given in Appendix 1.
8. Frond: is an individual/single ‘leaf-like’ structure of a duckweed plant. It is the smallest unit, i.e. individual, capable of reproduction.
9. Flow-through: is a test in which the test solutions are replaced continuously. Frond: is an individual/single ‘leaf-like’ structure of a duckweed plant.
10. EyCx is dependent on the specific growth rate of the duckweed species used in each test and on the maximum specific growth rate that can vary between species and even different clones.
11. The concept of average specific growth rate is based on the general exponential growth pattern of duckweed in non-limited cultures, where toxicity is estimated on the basis of the effects on the growth rate, without being dependent on the absolute level of the specific growth rate of the control, slope of the concentration-response curve or on test duration.