Maize Inbred PH12SG Breeding for Disease Resistance and Yield
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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, PH12SG, which incorporates specific traits through crossing, backcross conversion, and transformation processes, enhancing resistance to various stresses and improving agronomic qualities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding methods are used to combine desirable traits, then disease resistance and drought tolerance can be achieved, but the time required for breeding is extended and uniformity of plant characteristics is compromised
Solution Approach 1:
The patent employs preliminary action by pre-selecting and characterizing parental inbred lines with specific desirable traits (disease resistance, drought tolerance, uniformity) before crossing. The inbred lines are developed and characterized in advance, allowing the F1 hybrid to inherit combined traits without requiring extended breeding time for trait selection and stabilization.
2Productivity
If traditional plant breeding is used to improve yield and agronomic quality, then genetic diversity is increased, but uniformity of plant characteristics required for mechanical harvesting is reduced
Solution Approach 1:
The patent applies parameter changes by developing inbred lines with stabilized homozygous genotypes that exhibit consistent phenotypic parameters (plant height, ear height, maturity timing). This genetic stabilization allows the F1 hybrid to display uniform plant characteristics while maintaining high yield potential, satisfying mechanical harvesting requirements.
3Adaptability or versatility
If multiple desirable traits are combined in a single variety, then overall crop performance is improved, but the complexity of the breeding process increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding process into distinct stages: developing specialized inbred parental lines with specific traits, crossing them to produce F1 hybrids, and evaluating the hybrids for combined trait expression. This segmented approach allows systematic combination of multiple desirable traits while managing breeding process complexity through structured methodology.
Data Source
AI summary
A novel maize variety designated PH12SG and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH12SG with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH12SG 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 PH12SG or a locus conversion of PH12SG with another maize variety.