Maize Inbred PH17AN 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 novel maize variety PH17AN, which is homozygous and combines desirable traits through breeding and genetic marker profiles, allowing for the creation of hybrid seeds and plants with improved 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 uniformity of plant characteristics deteriorates
Solution Approach 1:
The breeding process is segmented into distinct generations (P, F1, F2, F3, etc.) with specific selection criteria for each stage. This systematic segmentation allows progressive accumulation of desirable traits while maintaining uniformity through controlled pollination and selection protocols at each generational step.
Solution Approach 2:
The patent employs preliminary action by performing multiple generations of inbreeding and selection before final variety establishment. The P generation is specifically selected for uniform plant type and desired traits, and F1-F3 generations undergo systematic inbreeding with selection to ensure uniformity is established before the variety is considered complete.
2Reliability
If multiple desirable traits are combined through traditional breeding, then disease resistance and drought tolerance improve, but the time to achieve maturity deteriorates
Solution Approach 1:
The breeding program maintains continuous useful action through systematic inbreeding across multiple generations (F1, F2, F3, F4, F5, F6, F7, F8, F9, F10) with continuous selection for desired traits. This continuous process efficiently combines multiple traits including drought tolerance while progressively establishing uniformity, ultimately achieving both trait combination and time efficiency.
Solution Approach 2:
Preliminary selection of the P generation for uniform plant type and desired traits establishes a strong foundation that accelerates subsequent breeding steps. The preliminary establishment of uniformity and trait presence in early generations reduces the time required in later generations to achieve the final variety.
3Ease of operation
If uniformity of plant characteristics is improved for mechanical harvesting, then ease of operation improves, but genetic diversity deteriorates
Solution Approach 1:
The patent applies local quality by maintaining genetic diversity within the inbred line through preservation of beneficial alleles at specific loci while achieving uniformity in overall plant characteristics. The breeding process selects for uniform plant type, height, and maturity while retaining genetic variation that confers disease resistance and drought tolerance, creating localized genetic quality within a uniform phenotype.
Data Source
AI summary
A novel maize variety designated PH17AN and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH17AN with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH17AN 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 PH17AN or a locus conversion of PH17AN with another maize variety.