Maize 1PVDR62 Breeding via Segmentation and Intermediary Lines
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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, 1PVDR62, 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 hybrid seeds with enhanced agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to combine desirable traits, then disease resistance and drought tolerance can be achieved, but the breeding process takes six to twelve years and is time-consuming
Solution Approach 1:
The patent applies preliminary action by using male sterility systems to pre-establish controlled pollination mechanisms before the breeding process begins. This allows for systematic trait combination across multiple generations simultaneously, rather than sequential breeding, thereby reducing the overall breeding time while maintaining disease resistance and other desirable traits
2Reliability
If multiple desirable traits are combined in a single variety, then yield stability and agronomic soundness improve, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct modular components: male sterile lines, maintainer lines, and restorer lines. Each module can be developed and optimized independently, then combined to achieve yield stability and agronomic soundness without requiring the entire program to be redesigned simultaneously, thus reducing overall complexity
3Productivity
If male sterility systems are introduced to facilitate hybrid seed production, then breeding efficiency improves, but the genetic complexity of the variety increases
Solution Approach 1:
The patent applies the intermediary principle by introducing maintainer lines as mediators between the male sterile lines and the final hybrid varieties. These maintainer lines carry the male sterility genes temporarily during the breeding process, enabling efficient hybrid seed production, and can be discarded after serving their intermediary purpose, thus improving breeding efficiency without permanently increasing the genetic complexity of the final variety
Data Source
AI summary
A novel maize variety designated 1PVDR62 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PVDR62 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PVDR62 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 1PVDR62 or a locus conversion of 1PVDR62 with another maize variety.