CV730108 Corn Variety Homogeneity via Segmentation
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Solution Overview
Problem
Corn breeding aims to combine desirable traits like yield, disease resistance, and uniformity, but existing methods face challenges in developing stable inbred plants with predictable performance due to genetic non-uniformity in hybrid populations.
Innovation Solution
The development of the corn variety CV730108, which includes a cytoplasmic or nuclear factor for male sterility and additional heritable traits such as herbicide tolerance and disease resistance, achieved through backcrossing and genetic transformation techniques, ensuring a homogeneous population and predictable performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to create hybrid corn plants, then genetic diversity and desirable traits are combined, but genetic non-uniformity results making performance unpredictable
Solution Approach 1:
The breeding process is segmented into distinct stages: first developing homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these standardized inbreds to produce hybrids. This segmentation allows genetic diversity to be introduced only at the crossing stage while maintaining uniformity within each parental line, thus resolving the contradiction between diversity and predictability.
Solution Approach 2:
The patent changes the genetic uniformity parameter by using multiple generations of self-pollination (S1, S2, S3, etc.) to progressively increase homozygosity in parental inbred lines. This parameter change ensures that when hybrids are produced, they inherit consistent genetic backgrounds from uniform parents, making hybrid performance predictable despite the genetic diversity introduced through crossing.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity and true breeding are achieved, but time and generations required for breeding increase
Solution Approach 1:
The patent applies preliminary action by pre-developing and characterizing multiple homozygous inbred lines (such as the 85DGD1 inbred line mentioned in the examples) before using them as parental stock for hybrid production. This preliminary development of standardized inbreds with known genetic uniformity allows subsequent hybrid crosses to be performed more efficiently without repeating the lengthy self-pollination process, thus reducing overall breeding time while maintaining genetic stability.
3Reliability
If extensive breeding programs are conducted to develop superior inbred parental plants, then desirable characteristics are improved, but complexity and resources required increase
Solution Approach 1:
The patent uses copying by reproducing and propagating selected superior inbred lines (such as the 85DGD1 inbred line) through multiple generations of self-pollination and seed multiplication. Once a superior inbred line is developed with desirable characteristics, it can be copied and used repeatedly as a parental line in hybrid production, avoiding the need to repeatedly develop new inbreds and thus reducing breeding program complexity while maintaining high hybrid performance reliability.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV730108. The invention thus relates to the plants, seeds and tissue cultures of the variety CV730108, and to methods for producing a corn plant produced by crossing a corn plant of variety CV730108 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 CV730108 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 CV730108.