Salute Iceberg Lettuce Tip Burn Resistance Breeding
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Solution Overview
Problem
There is a need for improved iceberg lettuce varieties that exhibit vigorous growth, increased weight, and increased yield to meet the growing demand for lettuce, with existing varieties often lacking resistance to tip burn and bolting, especially in warmer production regions.
Innovation Solution
The development of the 'Salute' iceberg lettuce variety, which is a result of a hand-pollinated cross between Progeny Advanced Genetics breeding lines PSJV032083 and PSSJV032084, selected for resistance to tip burn and bolting, and adapted for summer production regions in California and spring harvest in Arizona, utilizing the single seed descent breeding method to achieve medium heading, improved leaf texture, and enhanced yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing iceberg lettuce varieties are cultivated, then they provide basic yield, but they lack resistance to tip burn and bolting especially in warmer production regions
Solution Approach 1:
The patent applies parameter changes by developing a new lettuce variety with modified genetic parameters that confer resistance to tip burn and bolting. The 'Salute' variety exhibits altered physiological parameters including slower bolting rate and improved tip burn resistance compared to parent varieties, enabling reliable performance in warmer regions where existing varieties fail.
2Reliability
If improved iceberg lettuce varieties are developed for warmer regions, then resistance to tip burn and bolting is achieved, but breeding complexity increases
Solution Approach 1:
The patent employs self-service through mass selection breeding where the 'Salute' variety maintains genetic uniformity and true-to-type performance without requiring complex hybridization protocols. The variety's consistent inheritance of desired traits allows growers to maintain populations through simple seed saving and selection, reducing breeding program complexity while achieving reliable resistance to tip burn and bolting.
3Productivity
If lettuce varieties are selected for vigorous growth and increased weight, then yield is improved, but uniformity of maturity may be compromised
Solution Approach 1:
The patent applies local quality by achieving uniform maturity across the entire plant population while maintaining vigorous growth characteristics. The 'Salute' variety exhibits synchronized developmental timing where all plants progress through growth stages uniformly, allowing harvest at optimal maturity for maximum yield without the variability that typically accompanies high-productivity varieties.
Data Source
AI summary
A new lettuce variety designated ‘Salute’ is described. ‘Salute’ is an iceberg lettuce variety exhibiting stability and uniformity.