Growth Response of Wheat (Triticum aestivum) Callus to Imazapyr and in Vitro Selection for Resistance
| Autor: | Thomas F. Peeper, P. L. Claypool, David C. Heering, Arron C. Guenzi |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
0106 biological sciences
Resistance (ecology) fungi food and beverages 04 agricultural and veterinary sciences Plant Science Imazapyr Biology 01 natural sciences In vitro 010602 entomology chemistry.chemical_compound Horticulture chemistry Callus 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science Selection (genetic algorithm) |
| Zdroj: | Weed Science. 40:174-179 |
| ISSN: | 1550-2759 0043-1745 |
| DOI: | 10.1017/s0043174500057179 |
| Popis: | Intact wheat plants and wheat calli responded similarly to varying concentrations of imazapyr. Fifty percent growth inhibition of wheat callus occurred with 0.05 μM imazapyr after 70 d. As imazapyr concentration increased from 0 to 10 μM, the free isoleucine, leucine, and valine decreased from 160 to 35, 260 to 49, and 310 to 59 pmol mg−1, respectively. Resistant calli, which had relative growth rates exceeding a calculated upper prediction interval, were obtained by in vitro selection at 2 and 5 μM imazapyr. Resistant calli growing on 2 μM imazapyr had free isoleucine, leucine, and valine concentrations intermediate to the control and susceptible callus. |
| Databáze: | OpenAIRE |
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