Maize Inbred 1PGBW33 Breeding Cycle Reduction
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, taking six to twelve years, and existing technologies face challenges in combining desirable traits such as disease resistance, drought tolerance, and high yield in a stable and agronomically sound manner.
Innovation Solution
A novel maize variety, 1PGBW33, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and drought tolerance, achieved through backcross conversion, genetic manipulation, and transformation, allowing for the creation of stable, high-yielding hybrids with improved agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then desirable traits such as disease resistance and drought tolerance can be combined, but the process takes six to twelve years and is time-consuming
Solution Approach 1:
The patent employs preliminary action by using male sterility systems and predetermined breeding designs before the actual breeding process begins. This allows breeders to pre-arrange cross-pollination schemes and trait combinations, eliminating time-consuming manual emasculation and selection steps during the breeding process, thereby reducing the overall breeding cycle while maintaining trait stability
Solution Approach 2:
The patent replaces mechanical breeding methods with molecular marker-assisted selection and genetic transformation techniques. Instead of relying on traditional phenotypic selection that requires multiple generations of field testing, molecular markers enable direct genetic analysis to confirm trait inheritance, dramatically accelerating the breeding process from 6-12 years to a shorter timeframe while ensuring trait stability
2Productivity
If multiple desirable traits are combined in a single variety, then yield and stress tolerance improve, but the breeding process becomes more complex
Solution Approach 1:
The patent applies universality by developing inbred lines with general combining ability that can serve multiple functions across different breeding programs and environmental conditions. The male sterile inbred lines, in particular, serve as universal female parents that can be crossed with various male parents to combine multiple traits simultaneously, simplifying the breeding program structure while achieving multi-trait improvement
Solution Approach 2:
The patent segments the breeding program into distinct functional components: male sterile inbred lines for controlled pollination, molecular markers for trait verification, and modular trait packages that can be combined systematically. This segmentation allows complex multi-trait breeding to be managed through standardized, repeatable modules rather than ad-hoc procedures, reducing program complexity while maintaining productivity
3Productivity
If male sterility is introduced to prevent self-pollination and ensure hybrid purity, then hybrid seed production efficiency improves, but additional genetic manipulation is required
Solution Approach 1:
The patent applies self-service through cytoplasmic male sterility (CMS) systems where the plant's own cytoplasmic genetics automatically prevent pollen production without requiring external intervention. The female parent lines carry CMS cytoplasm that inherently blocks male fertility, eliminating the need for manual detasseling or external control mechanisms, thereby improving hybrid seed production efficiency while the genetic manipulation is confined to developing these specialized parent lines rather than ongoing operations
Data Source
AI summary
A novel maize variety designated 1PGBW33 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PGBW33 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PGBW33 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 1PGBW33 or a locus conversion of 1PGBW33 with another maize variety.