Corn Variety CV743564 Homogeneity via Self-Pollination
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Solution Overview
Problem
Corn breeding aims to combine desirable traits like yield, disease resistance, and uniformity, but existing methods struggle to develop stable inbred plants with predictable performance due to genetic non-uniformity from cross-pollination, leading to unpredictable hybrid traits.
Innovation Solution
The development of the corn variety CV743564, which includes a cytoplasmic or nuclear factor for male sterility and specific genetic loci conferring traits like herbicide tolerance and disease resistance, along with tissue cultures capable of regenerating plants with consistent morphological and physiological characteristics, ensures a homogeneous population of inbred seeds and plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to combine desirable traits from different plants, then genetic diversity and trait combination are improved, but genetic non-uniformity increases leading to unpredictable hybrid performance
Solution Approach 1:
The patent applies preliminary action by developing homozygous inbred plants through multiple generations of self-pollination and selection before creating hybrids. This pre-processing ensures that the parental lines are genetically uniform and stable, so that when they are crossed, the hybrid performance becomes predictable and reliable, resolving the contradiction between trait combination capability and performance predictability.
Solution Approach 2:
The patent employs homogeneity by creating homozygous inbred plants with uniform genetic composition through repeated self-pollination. This genetic homogeneity within parental lines ensures that their crosses produce uniform hybrid populations with predictable traits, eliminating the non-uniformity that would otherwise lead to unpredictable performance while still allowing desirable traits to be combined.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but the time to develop stable inbred lines increases
Solution Approach 1:
The patent applies preliminary action by establishing homozygous inbred lines through multiple generations of self-pollination and selection before the actual hybrid development. This preparatory work, though time-consuming, creates stable genetic foundations that accelerate subsequent hybrid breeding and ensure predictable outcomes, justifying the initial time investment.
Solution Approach 2:
The patent employs continuity of useful action by implementing recurrent selection and multiple generations of self-pollination in a continuous, systematic manner. Rather than discrete, interrupted breeding cycles, the process maintains continuous selection and selfing to achieve homozygosity, efficiently progressing through the time-consuming but necessary steps of inbred line development.
3Reliability
If extensive breeding programs are implemented to develop superior inbred plants, then desirable characteristics are improved, but the complexity of breeding operations increases
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding program into distinct, manageable phases: (1) development of homozygous inbred lines through self-pollination and selection, (2) crossing of inbred lines to create hybrids, and (3) evaluation and selection of superior hybrids. This segmentation makes the complex process more systematic and manageable while ensuring high-quality inbred plants are developed.
Solution Approach 2:
The patent employs parameter changes by systematically varying key breeding parameters such as pollination type (self-pollination vs. cross-pollination), selection criteria, and generation numbers to achieve the desired inbred plant quality. By optimizing these parameters, the program achieves reliable results without requiring excessive complexity in the breeding operations.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated CV743564. The invention thus relates to the plants, seeds and tissue cultures of the variety CV743564, and to methods for producing a corn plant produced by crossing a corn plant of variety CV743564 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 CV743564 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 CV743564.