Maize Inbred PH1T6N Breeding for Disease Resistance and Uniformity
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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
Development of the maize variety PH1T6N, which is a novel inbred maize line with specific traits like resistance to diseases and abiotic stresses, combined with processes for making PH1T6N seeds and plants through crossing and backcross conversion, allowing for the introduction of desired traits through genetic manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding is used to combine desirable traits, then resistance to diseases and insects, resistance to heat and drought, and greater yield can be achieved, but uniformity of plant characteristics such as germination, stand establishment, growth rate, maturity, plant height and ear height is compromised
Solution Approach 1:
The patent segments the breeding process into distinct phases: creating inbreds with specific traits through controlled crosses, then combining these inbreds into hybrids. This segmentation allows each phase to optimize for specific characteristics - inbreds for uniformity and trait stability, hybrids for vigor and yield - thereby resolving the contradiction between trait resistance and uniformity.
Solution Approach 2:
The patent applies local quality by developing specific inbred lines (such as PH1T6N) with particular localized traits like disease resistance or drought tolerance, then combining these specialized inbreds in hybrid configurations. Each inbred contributes its specific local advantage to the hybrid, achieving both trait resistance and overall uniformity through careful selection and combination.
2Productivity
If traditional plant breeding is used to combine desirable traits, then resistance to diseases and insects, resistance to heat and drought, and greater yield can be achieved, but mechanical harvesting uniformity is compromised
Solution Approach 1:
The patent employs preliminary action by selecting and stabilizing uniform plant characteristics during the inbreeding process before the actual hybrid production. Inbreds like PH1T6N are developed through multiple generations of selfing and selection to ensure uniformity in key traits such as plant height, ear height, and maturity. This preliminary uniformity is then preserved in the hybrid, enabling reliable mechanical harvesting while maintaining high yield through the heterosis effect.
3Stability of the object's composition
If inbred maize varieties are developed through selfing and selection, then uniformity and homozygosity are achieved, but time to crop maturity is extended
Solution Approach 1:
The patent applies dynamics by transitioning from static inbreeding processes to dynamic hybridization. Inbreds are developed through systematic selfing and selection to achieve homozygosity and uniformity, but then these inbreds are dynamically combined in hybrid crosses to restore vigor and accelerate maturity. The hybrid generation leverages heterosis to achieve both the uniformity needed for mechanical harvesting and the vigor needed for timely maturity, resolving the time loss associated with prolonged inbreeding.
Data Source
AI summary
A novel maize variety designated PH1T6N and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1T6N with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1T6N 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 PH1T6N or a locus conversion of PH1T6N with another maize variety.