Lettuce Cultivar Regency 3.0 Disease Resistance Breeding
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Solution Overview
Problem
Current lettuce varieties lack a combination of desirable traits such as large head size, resistance to diseases like downy mildew and corky root, and adaptability to specific growing regions, which limits their agronomic quality and market value.
Innovation Solution
Development of the novel lettuce cultivar Regency 3.0, which features a large head size, resistance to downy mildew, corky root, and lettuce necrotic stunt virus, along with adaptability to summer and autumn growing regions, achieved through selective breeding and genetic modification techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lettuce varieties are used, then they can be grown in various regions, but they lack resistance to specific diseases like downy mildew and corky root
Solution Approach 1:
The patent combines multiple disease resistance traits (downy mildew, corky root, lettuce necrotic stunt virus) with large head size and regional adaptability into a single lettuce cultivar Regency 3.0, resolving the contradiction by merging previously separate desirable traits into one unified variety
2Reliability
If selective breeding and genetic modification techniques are used to develop new traits, then disease resistance and head size improve, but the complexity of the breeding program increases
Solution Approach 1:
The patent employs preliminary action by conducting extensive preliminary breeding work to establish parent lines with specific desired traits before the final cross, and by using molecular markers to pre-identify plants with desired resistance genes, thereby simplifying the overall breeding program complexity
3Weight of stationary object
If focus is placed on achieving large head size, then market value increases, but resistance to diseases may be compromised
Solution Approach 1:
The patent merges the large head size trait (15-20 pounds) with multiple disease resistance traits (downy mildew, corky root, lettuce necrotic stunt virus) in the Regency 3.0 cultivar, demonstrating that both large head size and disease resistance can be achieved simultaneously through careful breeding
Data Source
AI summary
A lettuce cultivar, designated Regency 3.0, is disclosed. The invention relates to the seeds, plants and plant parts of lettuce cultivar Regency 3.0 and to methods for producing a lettuce plant by crossing the cultivar Regency 3.0 with itself or another lettuce cultivar. The invention further relates to methods for producing a lettuce plant containing in its genetic material one or more transgenes and to the transgenic lettuce plants and plant parts produced by those methods. This invention also relates to lettuce cultivars or breeding cultivars and plant parts derived from lettuce cultivar Regency 3.0, to methods for producing other lettuce cultivars, lines or plant parts derived from lettuce cultivar Regency 3.0 and to the lettuce plants, varieties, and their parts derived from the use of those methods. The invention further relates to hybrid lettuce seeds, plants, and plant parts produced by crossing cultivar Regency 3.0 with another lettuce cultivar.