Maize Inbred PH1M6T Marker-Assisted Breeding
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Solution Overview
Problem
Current maize breeding techniques face challenges in combining desirable traits such as disease resistance, drought tolerance, and uniformity, which are essential for efficient crop production and mechanical harvesting.
Innovation Solution
The development of a novel maize variety, PH1M6T, which is a homozygous inbred line with improved traits like resistance to diseases and abiotic stresses, combined with processes for producing hybrid seeds and plants through crossing and backcross conversion, allowing for the introduction of specific desired traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional plant breeding methods are used to combine desirable traits, then multiple traits can be combined in a single variety, but the breeding process is time-consuming and lacks precision in trait integration
Solution Approach 1:
The patent replaces traditional mechanical breeding methods (manual crossing, selection, and phenotyping) with molecular marker-based identification systems. By using DNA markers linked to desirable traits, breeders can identify and select plants with desired traits at the molecular level, dramatically accelerating the breeding process while maintaining precision in trait combination.
Solution Approach 2:
The patent introduces molecular markers as intermediaries between phenotypic observation and genetic selection. These markers serve as reliable indicators that allow breeders to track and combine multiple desirable traits simultaneously without waiting for phenotypic expression, thus reducing breeding time while achieving comprehensive trait integration.
2Adaptability or versatility
If traditional breeding focuses on multiple traits simultaneously, then comprehensive improvement is achieved, but uniformity of plant characteristics suffers
Solution Approach 1:
The patent replaces phenotypic selection with molecular marker-based selection to achieve uniformity. By identifying and selecting plants with specific marker profiles that correspond to desired traits, the method ensures consistent trait expression across the population while maintaining the ability to combine multiple traits, thus achieving both comprehensiveness and uniformity.
Solution Approach 2:
The patent implements molecular marker feedback systems that provide real-time information about the genetic composition of breeding plants. This feedback allows breeders to make precise selections to maintain uniformity of plant characteristics while simultaneously incorporating multiple desirable traits, resolving the contradiction between trait diversity and population uniformity.
3Adaptability or versatility
If traditional breeding methods are used for disease and stress resistance, then resistance traits can be incorporated, but the resistance level and consistency are insufficient
Solution Approach 1:
The patent replaces phenotypic selection for resistance traits with molecular marker-based selection. By using markers tightly linked to resistance genes, the method ensures that plants with desired resistance traits are accurately identified and selected, achieving both high resistance levels and consistent expression across the breeding population.
Solution Approach 2:
The patent introduces molecular markers as intermediaries to track resistance traits through generations. These markers provide reliable indicators of resistance gene presence and expression, enabling consistent selection for disease and stress resistance while maintaining the ability to combine multiple resistance traits in a single variety.
Data Source
AI summary
A novel maize variety designated PH1M6T and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1M6T with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1M6T through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. Hybrid maize seed, plant or plant part produced by crossing the variety PH1M6T or a locus conversion of PH1M6T with another maize variety.