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Growth and Competitiveness of ALS-Inhibiting Herbicide-Resistant Amaranthus retroflexus L.
- Source :
- Plants, Vol 11, Iss 19, p 2639 (2022)
- Publication Year :
- 2022
- Publisher :
- MDPI AG, 2022.
-
Abstract
- The evolved acetolactate synthase (ALS) inhibiting herbicide-resistant redroot amaranth has been confirmed in China and caused a great loss in soybean production. This study was conducted to evaluate the growth and competitiveness of ALS-resistant (R) and ALS-susceptible (S) redroot amaranth biotypes. Seeds of both R and S biotypes were subjected to different temperature regimes. Data revealed that the germination percentage and seedling vigor of both biotypes did not differ largely from each other at 10/20 to 30/40 °C. Under noncompetitive conditions, there were no significant leaf number, plant height, or dry weight differences between the R and S biotypes. Moreover, replacement series experiment results indicated that the R and S biotypes have a similar competitive ability. This study shows that there are no significant differences in growth or competitiveness between the R and S redroot amaranth biotypes regarding the physiological characteristics evaluated. Therefore, the proportion and distribution of the R biotype will not be affected in the absence of the ALS-inhibiting herbicide. Some other effective management practices should be adopted to cope with this troublesome weed.
Details
- Language :
- English
- ISSN :
- 22237747
- Volume :
- 11
- Issue :
- 19
- Database :
- Directory of Open Access Journals
- Journal :
- Plants
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.682b346d10c1449db7a28c66f409d9b1
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/plants11192639