This article explores key questions surrounding canola hybrids, focusing on pod shatter tolerance, pod drop, and how they differ. Insights are shared by Eric Gregory, Director of Marketing at BrettYoung Seeds, and Evan Gillis, a canola breeder at DL Seeds. The discussion highlights recent field observations and ongoing research relevant to growers facing challenging harvest conditions.
Benefits of Pod Shatter Tolerance
Pod shatter tolerance supports direct harvesting and helps reduce harvest losses, particularly following high-wind events such as those seen in fall 2020.
Pod Drop: A Growing Concern
Despite using shatter-tolerant varieties, some growers experienced losses due to pod drop. This issue became more noticeable after recent weather patterns and revealed an additional vulnerability for producers.
Research Insights from DL Seeds
Breeding Priorities
DL Seeds is developing the next generation of elite hybrids for Western Canada. The breeding program focuses on:
- Disease resistance
- High yield
- Pod shatter tolerance, with pod drop now an emerging research area
Research Protocols
DL Seeds uses several approaches to evaluate pod traits:
- Testing at research plots such as the Miami, Manitoba site
- In-field screening to evaluate pod drop
- Artificial wind and other methods to simulate damage and observe plant response
- Graduate-level research through the University of Manitoba focusing on pod shatter and pod drop
Defining Pod Shatter vs. Pod Drop
Pod Shatter
Occurs when the pod breaks apart and seeds fall to the ground.
Pod Drop
Occurs when the pod falls off the plant intact instead of shattering.
These issues stem from distinct genetic traits and are not linked to the same genes or biological pathways.
Breeding for Improved Tolerance
Screening and Development Work
DL Seeds is screening a broad range of elite germplasm (the top-performing genetic material in the breeding program) across nurseries and advanced hybrids to establish baseline pod-trait data and identify materials with improved tolerance. By combining new traits with elite genetic backgrounds, the goal is to develop hybrids with enhanced resistance to both pod shatter and pod drop.
Key Takeaways
- Pod shatter tolerance reduces harvest losses and supports direct harvest.
- Pod drop can still impact growers, even in shatter-tolerant varieties.
- Pod shatter and pod drop are distinct genetic traits.
- Ongoing research aims to strengthen canola hybrid tolerance through advanced screening and breeding protocols.
FAQ
What is pod shatter tolerance and why is it important?
Pod shatter tolerance helps growers direct harvest canola and reduce harvest losses, especially during high-wind conditions.
What is pod drop and how has it affected growers?
Pod drop occurs when the pod falls off the plant intact. Recent weather patterns made pod drop more noticeable, causing losses even in shatter-tolerant varieties.
How is DL Seeds addressing pod shatter and pod drop?
DL Seeds is conducting breeding programs focused on disease resistance, high yield, and pod shatter tolerance, with field screening and artificial wind testing to evaluate pod drop.
What is the difference between pod shatter and pod drop?
Pod shatter involves pods breaking and releasing seeds, while pod drop involves pods falling off intact. The two issues stem from separate genetic traits.
