Maize Inbred PH1JP9 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, PH1JP9, which is a homozygous inbred line with improved traits achieved through selective breeding and potential genetic modifications, including backcross conversion and transformation, to enhance resistance to various stresses and pests, and improve 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 reduced
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, drought tolerance, uniformity) before hybridization. The inbred line PH1JP9 has been预先 developed through traditional breeding to possess multiple desirable traits including resistance to Northern corn leaf blight, Southern corn leaf blight, and tolerance to drought, which can then be combined with other inbred lines more efficiently
Solution Approach 2:
The patent employs parameter changes by modifying the genetic composition and phenotypic parameters of maize inbred lines through selective breeding and backcrossing. The inbred line PH1JP9 exhibits altered parameters including improved resistance to biotic and abiotic stresses, enhanced uniformity of plant characteristics, and modified maturity characteristics compared to conventional inbred lines
2Stability of the object's composition
If traditional plant breeding is used to achieve uniformity of plant characteristics, then mechanical harvesting compatibility is improved, but yield potential and agronomic quality are compromised
Solution Approach 1:
The patent applies merging by combining multiple desirable traits from different inbred lines into a single hybrid variety. The hybrid produced by crossing inbred line PH1JP9 with another inbred line integrates traits including uniformity of plant characteristics (for mechanical harvesting), disease resistance, drought tolerance, and high yield potential, achieving a synergistic combination that surpasses individual parent lines
3Productivity
If inbred line PH1JP9 is crossed with another maize variety to produce hybrids, then yield and uniformity are enhanced, but the complexity of breeding processes increases
Solution Approach 1:
The patent applies copying by creating replicated hybrid combinations using inbred line PH1JP9 as a common parent. The inbred line can be crossed with multiple different inbred lines to produce various hybrid varieties that all inherit the desirable traits of PH1JP9, allowing for systematic evaluation and selection of optimal hybrid combinations without repeating the entire breeding process
Data Source
AI summary
A novel maize variety designated PH1JP9 and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1JP9 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1JP9 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 PH1JP9 or a locus conversion of PH1JP9 with another maize variety.