* Phytotoxical effect of Lepidium draba L. extracts on the germination and growth of monocot (Zea mays L.) and dicot (Amaranthus retroflexus L.) seeds.
- Laboratory experiments were performed to determine phytotoxic potentials of white top (Lepidium draba) methanol extracts (root, stem and leaf) on germination and early growth of corn (Zea mays) and redroot pigweed (Amaranthus retroflexus). Furthermore, the effects of different methanol extracts of L. draba on the phytohormone (indole-3-acetic acid (IAA), gibberellic acid (GA), abscisic acid (ABA) and zeatin) levels of corn and redroot pigweed were investigated. It was observed that all concentrations of methanol extracts of root, stem and leaf of L. draba inhibited germination, radicle and plumule elongation when compared with the respective controls. Besides this, the degree of inhibition was increased in concert with increasing concentrations of extracts used. On the other hand, phytohormone levels changed with the application of different extract concentrations. Comparing with the control, the GA levels significantly decreased while the ABA levels increased in all the application groups. Zeatin and IAA levels showed changes depending upon the applied extracts and concentrations.
=>時間と労働, その間に, 時間, する間に, なのに, そのうえ, をのんびりと過す
Overview of noun while
The noun while has 1 sense (first 1 from tagged texts)
1. (23) while, piece, spell, patch -- (a period of indeterminate length (usually short) marked by
some action or condition; "he was here for a little while"; "I need to rest for a piece"; "a spell
of good weather"; "a patch of bad weather")
--- WordNet end ---
PubMed database: last updated on 2023-11-30 (c)sirasawa 2019