Maize Inbred 1PRQT18 for Faster Multi-Trait Variety Breeding
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Solution Overview
Problem
The development of new maize varieties is a time-consuming process that requires years to combine desirable traits such as disease resistance, drought tolerance, and high yield, posing challenges in efficiently producing stable and agronomically sound maize varieties.
Innovation Solution
The development of a novel maize variety, 1PRQT18, which incorporates specific traits like male sterility, disease resistance, and drought tolerance through genetic manipulation and transformation, along with processes for producing hybrid maize seeds and plants, including methods to prevent self-pollination and enhance cross-pollination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding methods are used to combine desirable traits, then stable and agronomically sound maize varieties are developed, but the process takes six to twelve years which is time-consuming
Solution Approach 1:
The patent applies preliminary action by pre-establishing inbred lines with specific desirable traits (such as disease resistance, drought tolerance, and male sterility) before the actual variety development process. This preparatory work of creating and maintaining inbred lines with known characteristics allows for more efficient subsequent breeding operations, reducing the overall time required while maintaining variety stability
2Productivity
If multiple desirable traits are combined in a single variety, then yield and resistance are improved, but the breeding process becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding process into separate, manageable components: developing inbred lines with specific traits, creating male-sterile lines for controlled pollination, and systematically combining traits through defined crossing procedures. This segmentation of the breeding process into modular steps makes it easier to manage and track multiple trait combinations while maintaining high yield potential
Solution Approach 2:
The patent employs universality by developing inbred lines that serve multiple functions: they provide disease resistance, drought tolerance, and male sterility traits simultaneously. These multi-functional inbred lines can be used in various breeding combinations to produce different hybrid varieties, reducing the overall complexity of the breeding program while achieving multiple desirable outcomes
3Productivity
If male sterility is introduced to prevent self-pollination, then cross-pollination efficiency is enhanced, but the genetic manipulation process becomes more difficult
Solution Approach 1:
The patent applies self-service by utilizing naturally occurring male sterility genes within the maize inbred lines themselves. Rather than requiring complex external genetic manipulation, the male-sterile lines self-regulate their pollination behavior through inherent genetic mechanisms, ensuring cross-pollination without self-fertilization. This self-service approach to preventing self-pollination simplifies the overall breeding process while maintaining high cross-pollination efficiency
Data Source
AI summary
A novel maize variety designated 1PRQT18 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PRQT18 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PRQT18 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety 1PRQT18 or a locus conversion of 1PRQT18 with another maize variety.