Maize Variety 10147840 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 resistance to diseases and insects, heat, and drought tolerance with high yield and uniform plant characteristics, which are essential for efficient mechanical harvesting.
Innovation Solution
The development of a new maize variety, designated 10147840, produced by crossing proprietary Pioneer Hi-Bred International inbred varieties, incorporating locus conversion and transformation to introduce specific traits, enhancing resistance and agronomic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding is used to combine desirable traits, then resistance to diseases and insects can be improved, but uniformity of plant characteristics deteriorates
Solution Approach 1:
The breeding process is segmented into distinct generations (P1, P2, F1, F2, F3) with specific selection criteria for each stage. This systematic segmentation allows progressive refinement of both disease resistance traits and uniformity characteristics through controlled crossing and selection at each generational step.
Solution Approach 2:
Different selection pressures are applied to different traits at different stages. Early generations focus on disease resistance selection, while later generations emphasize uniformity of plant characteristics. This local quality approach ensures both resistance and uniformity are optimized without compromising either trait.
2Reliability
If traditional plant breeding is used to combine desirable traits, then tolerance to heat and drought can be improved, but yield potential deteriorates
Solution Approach 1:
The patent merges selection for abiotic stress tolerance with selection for yield potential through controlled hybridization. By crossing inbreds with complementary traits and selecting F2/F3 progeny that exhibit both stress tolerance and high yield, the method combines previously traded-off characteristics into a single improved variety.
Solution Approach 2:
The breeding method changes the parameter selection focus across generations. Early generations select primarily for stress tolerance, while subsequent generations shift parameters to simultaneously evaluate both stress tolerance and yield metrics, ultimately achieving varieties that excel in both categories.
3Reliability
If selection pressure is increased to improve disease resistance, then resistance to diseases can be improved, but agronomic quality deteriorates
Solution Approach 1:
Disease resistance is established through preliminary intensive selection in early generations (P1, P2, F1) before agronomic quality selection becomes the primary focus. This preliminary action ensures resistance is locked in before subsequent generations are selected for uniformity and agronomic traits, preventing trade-offs between the two qualities.
Solution Approach 2:
The selection criteria dynamically shift across breeding generations. Intense disease resistance selection applies early when genetic variation is highest, then gradually transitions to agronomic quality selection as the population becomes more uniform. This dynamic approach optimizes both resistance and quality without mutual interference.
Data Source
AI summary
A novel maize variety designated 10147840 and seed, plants and plant parts thereof, produced by crossing Pioneer Hi-Bred International, Inc. proprietary inbred maize varieties. Methods for producing a maize plant that comprises crossing maize variety 10147840 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 10147840 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. This invention relates to the maize variety 10147840, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety 10147840. This invention further relates to methods for producing maize varieties derived from maize variety 10147840.