Maize Inbred PH4DMC Breeding via Segmentation and Preliminary Action
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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 from the first cross to delivering finished seed to farmers, 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, PH4DMC, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and drought tolerance via backcross conversion, genetic manipulation, and transformation, allowing for the creation of stable, high-yielding maize plants with improved agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to combine desirable traits, then stable and agronomically sound varieties are achieved, but the development process takes six to twelve years
Solution Approach 1:
The patent employs preliminary action through the use of male-sterile inbred lines and predetermined hybrid combinations. By pre-establishing inbred lines with specific traits (disease resistance, drought tolerance) and using male-sterility to prevent self-pollination, the breeding process is accelerated while maintaining genetic stability. The male-sterile trait acts as a built-in mechanism that eliminates the need for manual emasculation and ensures cross-pollination, thereby reducing development time without sacrificing variety stability.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then agronomic performance is improved, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct components: disease resistance traits, drought tolerance traits, and male-sterility traits are developed and maintained in separate inbred lines. These segmented trait components are then combined through controlled cross-pollination to create hybrids with multiple desirable traits. This segmentation approach allows each trait to be optimized independently while simplifying the overall breeding program complexity.
Data Source
AI summary
A novel maize variety designated PH4DMC and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH4DMC with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH4DMC 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 PH4DMC or a locus conversion of PH4DMC with another maize variety.