Maize Inbred PH1M17 Breeding for Uniformity and Stress Resistance
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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 a novel maize variety, PH1M17, through specific breeding processes including backcrossing and transformation, which incorporates desirable traits like drought resistance, disease resistance, and improved agronomic qualities, allowing for the creation of hybrid seeds and plants with enhanced characteristics.
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 to crop maturity is extended and uniformity of plant characteristics is reduced
Solution Approach 1:
The patent employs preliminary action by pre-selecting and pre-combining desirable traits through systematic breeding programs before commercial deployment. Inbred lines are developed with predetermined disease resistance and drought tolerance characteristics through controlled crosses and selection, allowing these traits to be established before the breeding process begins, thereby reducing the time required to achieve maturity with desired traits.
Solution Approach 2:
The patent applies parameter changes by modifying key breeding parameters including generation time, selection intensity, and crossbreeding strategies. By optimizing these parameters through accelerated breeding methods and selective genotyping, the patent achieves faster maturity while maintaining disease resistance and drought tolerance traits that would traditionally require longer breeding cycles.
2Reliability
If traditional plant breeding methods are used to combine desirable traits, then drought tolerance can be achieved, but uniformity of plant characteristics such as germination, stand establishment, growth rate, and maturity is reduced
Solution Approach 1:
The patent applies the extraction principle by isolating and selecting specific genetic lines that possess both drought tolerance and uniform plant characteristics. Through repeated backcrossing and selection of individuals with desired uniformity traits, the patent extracts and concentrates the desirable combination of drought tolerance with uniform germination, stand establishment, growth rate, and maturity from heterogeneous breeding populations.
Solution Approach 2:
The patent achieves homogeneity by developing inbred lines through continuous selfing and selection, which increases genetic uniformity within the line. This homogenization process ensures that plants within a given variety exhibit consistent characteristics including uniform germination, stand establishment, growth rate, and maturity, while maintaining the desired drought tolerance trait.
3Productivity
If mechanical harvesting is used, then crop production efficiency is improved, but uniformity of plant characteristics such as plant height and ear height becomes critical and difficult to achieve with traditional breeding
Solution Approach 1:
The patent applies universality by developing inbred lines that simultaneously express multiple uniform characteristics required for mechanical harvesting. The breeding program selects for uniformity in plant height, ear height, and other architectural traits together with yield and stress tolerance, creating a multi-functional variety that satisfies both productivity requirements for mechanical harvesting and precision requirements for uniform plant characteristics.
Data Source
AI summary
A novel maize variety designated PH1M17 and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1M17 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1M17 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 PH1M17 or a locus conversion of PH1M17 with another maize variety.