Maize Inbred 1PHNQ08 Crosses for Drought and Disease Resistance
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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, 1PHNQ08, which incorporates specific traits like male sterility, disease resistance, and drought tolerance through genetic manipulation and transformation, along with processes for crossing and backcross conversion, to create hybrid maize seeds with improved characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then desirable traits can be combined, but the process takes 6-12 years making it time-consuming
Solution Approach 1:
The patent applies preliminary action by using pre-developed inbred lines with known genetic characteristics as starting material. The inbred lines are prepared in advance through multiple generations of self-pollination to achieve homozygosity, so that when crossing is finally performed, the desired traits are already present in the parental lines, significantly reducing the breeding time required.
Solution Approach 2:
The patent changes the genetic parameter state by transitioning from heterogeneous populations to homozygous inbred lines through controlled self-pollination over multiple generations. This parameter change allows for precise control of genetic composition and enables faster development of new varieties since the starting material is already genetically stabilized.
2Productivity
If multiple desirable traits are combined in a single variety, then agronomic performance improves, but the complexity of breeding programs increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct phases: first developing separate inbred lines with specific desirable traits (such as disease resistance, drought tolerance, high yield), then combining these pre-characterized lines through controlled crosses. This segmentation allows each trait to be optimized independently before integration, reducing overall program complexity.
Solution Approach 2:
The patent creates multi-functional inbred lines that carry multiple desirable traits simultaneously. These universal inbred lines can serve as parents for multiple different hybrid combinations, allowing a single line to contribute to various breeding objectives and reducing the need for separate breeding programs for each trait.
3Stability of the object's composition
If inbred lines are developed through multiple generations of self-pollination, then genetic homozygosity is achieved, but the process requires extensive time and resources
Solution Approach 1:
The patent uses copying by creating inbred lines that are genetic copies of themselves through self-pollination. After multiple generations, each inbred line becomes a stable copy with identical homozygous genotype, allowing for predictable inheritance and reducing the time needed for subsequent breeding operations since the genetic composition is already fixed.
Data Source
AI summary
A novel maize variety designated 1PHNQ08 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PHNQ08 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PHNQ08 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 1PHNQ08 or a locus conversion of 1PHNQ08 with another maize variety.