Corn Variety CV659171 Uniformity via Segmented Breeding
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing uniform corn hybrids with desirable traits such as high yield, disease resistance, and uniform germination, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the corn variety CV659171, which is a stable inbred line with specific traits like male sterility, herbicide tolerance, and disease resistance, achieved through backcrossing and genetic transformation techniques, ensuring uniformity and desirable characteristics in progeny plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to develop corn hybrids, then various desirable traits can be combined in a single variety, but the resulting hybrid plants exhibit genetic non-uniformity leading to unpredictable performance
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred parental lines through self-pollination, then crossing these uniform inbreds to produce hybrid progeny. This segmentation ensures that genetic uniformity is established at the parental level before hybridization, resolving the contradiction between trait combination and performance predictability.
Solution Approach 2:
Homozygous inbred parental lines are developed in advance through multiple generations of self-pollination and selection before the hybrid crossing step. This preliminary action ensures that the parental lines are genetically uniform and stable, which then guarantees uniform and predictable performance in the resulting hybrid plants.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then uniform true breeding progeny are produced, but the breeding process requires multiple generations and extensive selection time
Solution Approach 1:
The breeding program incorporates systematic evaluation and selection feedback at each generation to monitor and ensure the development of uniform plant types. This feedback mechanism accelerates the identification of homozygous lines, reducing the time required to achieve genetic uniformity compared to traditional breeding without structured evaluation.
3Adaptability or versatility
If cross-pollination is used to produce hybrid plants, then genetic diversity and trait combination are achieved, but the resulting population is non-uniform and unpredictable
Solution Approach 1:
The patent applies different breeding strategies to different stages: self-pollination is used locally at the parental line development stage to achieve homozygosity, while cross-pollination is used locally at the hybrid production stage to achieve genetic diversity. This localized application of different pollination methods resolves the contradiction between uniformity and diversity.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV659171. The invention thus relates to the plants, seeds and tissue cultures of the variety CV659171, and to methods for producing a corn plant produced by crossing a corn plant of variety CV659171 with itself or with another corn plant, such as a plant of another variety. The invention further relates to corn seeds and plants produced by crossing plants of variety CV659171 with plants of another variety, such as another inbred line. The invention further relates to the inbred and hybrid genetic complements of plants of variety CV659171.