Maize Variety PH11YB Breeding Segmentation for Disease Resistance
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Solution Overview
Problem
Current maize breeding techniques face challenges in combining desirable traits such as disease resistance, drought tolerance, and uniformity, which are essential for efficient crop production and mechanical harvesting.
Innovation Solution
Development of the novel maize variety PH11YB, which combines resistance to various diseases and stresses, along with improved agronomic traits through specific breeding processes including backcross conversion and transformation, to enhance yield and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding is used to combine desirable traits, then disease resistance and yield can be improved, but the complexity of the breeding process increases and uniformity of plant characteristics deteriorates
Solution Approach 1:
The breeding process is segmented into distinct generations (P, F1, F2, F3, F4) with specific selection criteria for each stage. This segmentation allows systematic combination of desirable traits while maintaining control over the breeding complexity through structured progression.
Solution Approach 2:
The patent employs preliminary action by performing multiple rounds of backcrossing (BC1, BC2, BC3, BC4) before final selection. This preliminary breeding action ensures that desirable traits from the original parent are systematically incorporated into the final variety, reducing the need for complex adjustments later.
2Productivity
If multiple desirable traits are combined in a single variety, then yield and adaptability improve, but the uniformity of plant characteristics deteriorates
Solution Approach 1:
The patent applies local quality by selecting for specific traits at different stages of breeding. Each generation focuses on particular characteristics (e.g., disease resistance in early generations, yield components in later generations), allowing uniformity to be maintained while incorporating multiple desirable traits through targeted selection.
Solution Approach 2:
The breeding process incorporates feedback through continuous evaluation and selection at each generation. Plant characteristics are assessed systematically, and only individuals meeting specific criteria progress to the next stage, ensuring uniformity is maintained while combining multiple traits.
3Reliability
If extensive backcrossing is performed to introgress traits, then disease resistance improves, but the time required for breeding increases
Solution Approach 1:
The patent maintains continuity of useful action by performing backcrossing operations continuously across multiple generations (BC1 through BC4) without interruption. This continuous breeding action efficiently introgresses disease resistance traits while minimizing idle time in the breeding process.
Solution Approach 2:
The extensive backcrossing is performed as preliminary action before final variety development. By completing the trait introgression work early in the breeding program, the patent reduces the time required for later selection and stabilization phases.
Data Source
AI summary
A novel maize variety designated PH11YB and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH11YB with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH11YB through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. Hybrid maize seed, plant or plant part produced by crossing the variety PH11YB or a locus conversion of PH11YB with another maize variety.