Lettuce Variety Payday Breeding for Yield and Disease Resistance
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Solution Overview
Problem
There is a need for new lettuce varieties that are stable, high-yielding, and agronomically sound, particularly for improved iceberg lettuce that addresses issues like resistance to diseases and pests, and meets growing global demand.
Innovation Solution
The development of new lettuce varieties, 'Sunchaser', 'PS1519', 'Elevate', and 'Payday', which exhibit specific morphological and physiological characteristics such as increased head weight, core diameter, and resistance to certain diseases, suitable for cultivation in regions like the Southwest United States, through selective breeding and tissue culture methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If new lettuce varieties are developed through selective breeding, then yield and disease resistance are improved, but breeding time and complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-selecting and stabilizing desirable traits (disease resistance, head weight, uniformity) through multiple generations of selective breeding before commercial release. The varieties were developed through systematic selection over generations, with careful attention to uniformity and stability of traits, preparing the breeding program in advance to efficiently produce high-yielding, disease-resistant varieties.
2Reliability
If lettuce varieties are bred for disease resistance, then reliability is improved, but breeding precision and selection difficulty increase
Solution Approach 1:
The patent applies feedback by systematically evaluating breeding lines for disease resistance characteristics and selecting only those that meet predetermined standards. The breeding program incorporated continuous monitoring and selection based on disease resistance performance, with careful attention to uniformity of expression of resistant traits across generations, ensuring reliable disease resistance in the final varieties.
3Productivity
If lettuce varieties are developed for high yield, then productivity is improved, but stability and uniformity may be compromised
Solution Approach 1:
The patent applies parameter changes by optimizing multiple genetic parameters simultaneously through selective breeding - specifically targeting head weight, head diameter, core diameter, and uniformity as interconnected parameters. The breeding program sought to achieve high yield through coordinated improvement of these parameters while maintaining genetic stability and uniformity of expression across the population, producing varieties that consistently express desirable traits.
Data Source
AI summary
New lettuce variety designated ‘Payday’ is described. ‘Payday’ is a lettuce variety exhibiting stability and uniformity.