Maize Inbred PH13JD Uniformity for Mechanical Harvesting
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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, PH13JD, which is a homozygous inbred line with specific traits introgressed through backcross conversion and transformation, allowing for the creation of hybrid seeds and plants with improved agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding is used to combine desirable traits, then disease resistance and drought tolerance can be achieved, but the time to crop maturity increases and uniformity of plant characteristics deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred line PH13JD with specific desirable traits (disease resistance, uniformity) before hybridization. The inbred line was developed through preliminary breeding steps including selection for Northern corn leaf blight resistance and characterization of uniform plant characteristics, allowing these traits to be fixed before the hybridization step that produces the final variety
Solution Approach 2:
The patent applies parameter changes by modifying the genetic composition through controlled crossing and backcrossing operations. The inbred line PH13JD was created by changing genetic parameters through repeated selfing and selection, achieving homozygosity and uniformity. The final variety PHBJ was created by changing the genetic parameters through a single cross between PH13JD and another inbred line, combining desirable traits while maintaining uniformity
2Reliability
If traditional plant breeding is used to combine desirable traits, then drought tolerance can be achieved, but uniformity of plant characteristics such as germination, stand establishment, growth rate, maturity, plant height and ear height deteriorates
Solution Approach 1:
The patent applies parameter changes by creating inbred line PH13JD through controlled genetic manipulation including repeated selfing and selection. This process changed the genetic parameters to achieve homozygosity, which fixed desirable traits (including drought tolerance) and simultaneously improved uniformity of plant characteristics. The inbred line was specifically selected for uniform germination, stand establishment, growth rate, maturity, plant height and ear height
Solution Approach 2:
The patent applies copying by creating true-to-type progeny through inbreeding. The inbred line PH13JD was developed to produce uniform copies of itself with consistent desirable traits. The variety PHBJ produced by crossing PH13JD with another inbred line also maintains uniformity because both parents are highly homozygous, ensuring consistent germination, stand establishment, growth rate, maturity, plant height and ear height across the population
3Productivity
If mechanical harvesting is used, then productivity increases, but uniformity of plant characteristics becomes more critical and traditional breeding methods fail to provide sufficient uniformity
Solution Approach 1:
The patent applies parameter changes by creating inbred lines with fixed genetic composition through repeated selfing and selection. Inbred line PH13JD was developed with homozygous genes that fix uniformity parameters including plant height, ear height, and maturity timing. This genetic uniformity enables mechanical harvesting because all plants in the field reach similar developmental stages simultaneously, allowing synchronized operations
Solution Approach 2:
The patent applies copying by producing true-to-type uniform plants through inbreeding. The inbred line PH13JD and its progeny variety PHBJ produce consistent copies with uniform plant characteristics that are essential for mechanical harvesting. The uniformity in plant height, ear height, and maturity ensures that mechanical harvesters can efficiently process the entire field without missing crops or damaging plants
Data Source
AI summary
A novel maize variety designated PH13JD and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH13JD with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH13JD 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 PH13JD or a locus conversion of PH13JD with another maize variety.