Corn Variety I018140 Breeding 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 I018140, which includes a cytoplasmic or nuclear factor for male sterility and additional heritable traits such as herbicide tolerance and disease resistance, along with tissue cultures capable of regenerating plants with specific physiological and morphological characteristics, facilitates the production of uniform inbred and hybrid seeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to create hybrid corn plants, then genetic diversity and trait combination are improved, but genetic uniformity and performance predictability deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first creating homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these standardized lines to generate hybrid progeny with desired genetic diversity. This segmentation allows control over when diversity is introduced while maintaining uniformity in the parental lines.
Solution Approach 2:
Homozygous inbred plants are developed in advance through multiple generations of self-pollination and selection before the hybrid crossing step. This preliminary creation of uniform parental lines ensures that when cross-pollination occurs, the resulting hybrids have predictable performance based on the known genetic composition of the parents.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but genetic diversity and adaptability worsen
Solution Approach 1:
Self-pollination and selection are performed as a preliminary step to create homozygous inbred lines with uniform genetics. These standardized lines serve as the foundation for subsequent hybridization, ensuring that the parental material is genetically stable before introducing diversity through crossing.
Solution Approach 2:
Homozygous inbred lines act as intermediary forms in the breeding process. They are not the final product but serve as controlled intermediates that bridge the gap between maintaining genetic uniformity and achieving desired genetic diversity in the final hybrid population.
3Productivity
If male sterility factors are introduced to prevent self-pollination, then cross-pollination efficiency is improved, but plant complexity worsens
Solution Approach 1:
The plant's own reproductive system is modified to serve the breeding program's needs. Male sterility factors are introduced so that the plant automatically prevents self-pollination, eliminating the need for manual emasculation or other complex external interventions to ensure cross-pollination.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated I018140. The invention thus relates to the plants, seeds and tissue cultures of the variety I018140, and to methods for producing a corn plant produced by crossing a corn plant of variety I018140 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 I018140 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 I018140.