Lettuce Primo Variety Disease Resistance Breeding
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Solution Overview
Problem
There is an ongoing need for improved lettuce varieties that offer resistance to specific diseases and pests, as well as enhanced nutritional and adaptability traits, which current varieties do not adequately address.
Innovation Solution
The development of the novel lettuce variety Primo, which includes resistance to Tomato Bush Stunt, Lettuce Downy Mildew B1:7US and B1:9US, and Corky Root Rot Races CA-1, along with methods for producing hybrid and transgenic plants with desired traits through crossing, tissue culture, and genetic modification, such as introducing transgenes for herbicide resistance and pest resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lettuce varieties are used, then production is simple and well-established, but resistance to diseases and pests is insufficient
Solution Approach 1:
The patent applies preliminary action by developing and establishing new lettuce varieties (Primo, Salinas, Sierra, Verde) with pre-integrated disease and pest resistance traits before commercial deployment. These varieties were bred in advance with specific resistances to downy mildew, root rot, and other pathogens, so that when farmers plant them, the resistance is already built-in, eliminating the need for complex field-level disease management interventions later
Solution Approach 2:
The patent applies parameter changes by modifying the genetic parameters of lettuce varieties to introduce enhanced disease and pest resistance. This involves changing the genetic composition through controlled breeding programs that incorporate resistance genes, thereby altering the biological parameters of the plant to achieve superior protection against pathogens while maintaining agronomic performance
2Reliability
If lettuce varieties with enhanced resistance traits are developed, then disease and pest resistance is improved, but breeding and production complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct modular components: developing individual parent lines with specific resistance traits (e.g., downy mildew resistance, root rot resistance), then combining them through controlled crosses to create hybrid varieties. This segmentation allows each resistance trait to be developed and optimized independently before integration, reducing the overall complexity of the breeding process
Solution Approach 2:
The patent applies universality by creating lettuce varieties that possess multiple resistance traits simultaneously (multi-functionality). The Primo, Salinas, Sierra, and Verde varieties were bred to resist multiple pathogens including downy mildew, root rot, and other diseases, making them universally applicable solutions for diverse disease pressure conditions without requiring separate breeding programs for each pathogen
3Adaptability or versatility
If current lettuce varieties are cultivated, then production methods are established, but nutritional quality and adaptability are limited
Solution Approach 1:
The patent applies parameter changes by modifying the genetic parameters of lettuce varieties to enhance both adaptability and nutritional quality while maintaining productivity. The new varieties were bred with altered genetic parameters that confer resistance to diseases, improved adaptability to different growing conditions, and enhanced nutritional profiles, demonstrating that parameter changes can achieve multiple improvements simultaneously
Data Source
AI summary
One embodiment relates to seed and plants of lettuce variety Primo. Another embodiment relates to the plants, seeds and tissue cultures of lettuce variety Primo, and to methods for producing a lettuce plant produced by crossing such plants with themselves, with another lettuce plant, such as a plant of another genotype, or with vegetatively propagating said plant. Another embodiment further relates to seeds and plants produced by such crossing. Further embodiments relate to parts of such plants, including the fruit and gametes of such plants.