Abstract
This chapter provides a comprehensive overview of key scientific terms related to plant fitness and delves into the concept of fitness in herbicide-resistant weed species, which may manifest as positive, negative (commonly referred to as the herbicide-resistant fitness cost), or neutral effects. It explores the underlying causes of fitness costs in resistant weeds and outlines methods for assessing their fitness both directly and indirectly. Critical challenges in fitness studies, such as uncontrolled genetic backgrounds, limited multigenerational data, and the absence of competitive assessments, are thoroughly analyzed. Additionally, this chapter examines the reversibility of non-target-site resistance (NTSR), particularly metabolism-based resistance, and its broader implications for weed management. Finally, the fitness dynamics of metabolism-based resistance mechanisms, with a specific focus on Lolium rigidum and Alopecurus myosuroides, is discussed in the context of extensive research on the costs and benefits associated with such resistance.
| Original language | English |
|---|---|
| Title of host publication | Resistance in Weeds from Herbicide Metabolism |
| Number of pages | 31 |
| Publisher | Wiley-Interscience |
| Publication date | 1 Jan 2025 |
| Pages | 233-263 |
| ISBN (Print) | 9781119686644 |
| ISBN (Electronic) | 9781119686699 |
| DOIs | |
| Publication status | Published - 1 Jan 2025 |
Keywords
- Alopecurus myosuroides
- annual ryegrass
- black grass
- fitness costs
- herbicide resistance
- Lolium rigidum
- measuring plant fitness
- metabolism-based resistance
- non-target-site resistance (NTSR)
- weed management