ZESZYT Nr 24/ 2016 Abstrakty Volume No. 24/2016 Abstracts |
3. Phytotoxicity of pyridineamidoximes against two crop plants: preliminary evaluation- Anna Parus, Aleksandra Wojciechowska, Irmina Wojciechowska Abstract. The
study involved the analysis of the impact of pyridineamidoximes on the
germination and early development of plants belonging to different
taxonomic units (monocots and dicots). Maize (Zea mays) and sunflower
(Helianthus annuus) were selected as the objects. Culture was carried
out in vertical plastic PhytotoxkitTM containers (Phytotoxkit, Tigret
company, Belgium). Number of germinated seeds, root length and shoot
height were recorded. Based on the results, germination index and
percentage inhibition of roots and shoots growth were calculated. 2-,
3- and 4-pyridineamidoximes showed varied influence on the plants under
study. Generally the toxic effect of pyridineamidoximes on the plants
depends on both the position of the functional group in the pyridine
ring, as well as on the concentration of the compound used. The results
showed a higher susceptibility of sunflower vs. maize to the compounds.
Phytotoxic response in maize occurred typically at the highest
concentration (above 500 mg kg-1 d.w.s.), while the sunflower symptoms inhibition due to the presence of the test compounds occurred at the lowest (25 and 50 mg kg-1 d.w.s.) and the highest (1000 mg kg-1 d.w.s.) concentration. Key words: pyridineamidoximes, phytotoxicity, maize, sunflower T |