Sun Quest Lettuce Yield and Tip Burn Resistance
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Solution Overview
Problem
There is a need for improved iceberg lettuce varieties that exhibit vigorous growth, increased weight, and yield to meet the growing demand for lettuce, with existing varieties lacking in these characteristics.
Innovation Solution
The development of the Lactuca sativa variety, Sun Quest, which demonstrates larger head and frame size, earlier maturity, and improved tip burn resistance, achieved through selective breeding and roguing processes, and characterized by its darker color and heavy leaf texture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing iceberg lettuce varieties are used, then production is maintained at current levels, but head size, weight, and yield are insufficient to meet growing demand
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific genetic parameters that result in increased head diameter, frame diameter, and weight. The Sun Quest variety exhibits statistically significant improvements in these parameters compared to the parent variety Sun Devil, directly resolving the contradiction between maintaining production and increasing yield through parameter optimization.
Solution Approach 2:
The patent employs dynamics through the selective breeding process that progressively improves variety characteristics over generations. The breeding program dynamically selects plants exhibiting superior growth vigor, head size, and maturity traits, creating a evolving lineage that continuously enhances productivity and head size parameters.
2Productivity
If lettuce varieties with larger head size are developed, then yield increases, but maturity time may be extended
Solution Approach 1:
The patent resolves this contradiction by changing the genetic parameters of the lettuce variety to achieve a favorable ratio between head size and maturity time. Sun Quest exhibits both larger head diameter and accelerated maturity compared to Sun Devil, demonstrating that parameter changes can simultaneously improve yield while reducing time to market, eliminating the traditional trade-off.
3Productivity
If selective breeding is applied to improve head size and uniformity, then yield and consistency increase, but breeding complexity and time investment increase
Solution Approach 1:
The patent applies preliminary action by conducting extensive preliminary breeding work to establish the Sun Quest variety with stable, uniform traits. The breeding program performed preliminary selection, testing, and stabilization of genetic characteristics for head size, uniformity, and tip burn resistance before commercial release. This preliminary action consolidates complexity into the variety development phase, resulting in a commercially viable product with consistent high-yield performance.
4Productivity
If lettuce varieties are bred for larger head size, then marketability improves, but resistance to tip burn and other stresses may be compromised
Solution Approach 1:
The patent resolves this contradiction by changing the genetic parameters to achieve a balanced phenotype that simultaneously improves head size and enhances stress resistance. Sun Quest exhibits both larger head diameter and improved tip burn resistance compared to Sun Devil, demonstrating that parameter changes can optimize multiple traits concurrently rather than requiring trade-offs between size and reliability.
Solution Approach 2:
The patent applies the composite materials principle by creating a composite genetic structure in Sun Quest that combines multiple desirable traits: large head size, uniformity, and tip burn resistance. The variety integrates these different genetic characteristics into a unified, stable genotype that expresses all traits simultaneously, resolving the contradiction between size improvement and stress resistance maintenance.
Data Source
AI summary
A new lettuce variety designated Sun Quest is described. Sun Quest is an iceberg lettuce variety exhibiting stability and uniformity.