Corn Variety I291741 Breeding for Uniformity
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Solution Overview
Problem
Corn breeding techniques face challenges in developing uniform corn hybrids with desirable traits such as high yield, disease resistance, and uniformity, as existing methods often result in unpredictable performance due to genetic non-uniformity in cross-pollinated plants.
Innovation Solution
The development of the corn variety I291741, which includes a cytoplasmic or nuclear factor for male sterility to prevent self-pollination, along with specific genetic loci for traits like herbicide tolerance, insect resistance, and modified metabolism, and the use of tissue cultures to regenerate plants with consistent physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to develop corn hybrids, then genetic diversity and trait combination are improved, but uniformity and predictability of performance deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing homozygous inbred lines through self-pollination to ensure uniformity, then crossing these standardized inbreds to introduce genetic diversity. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Homozygous inbred plants are developed in advance through multiple generations of self-pollination and selection before the crossing stage. This preliminary action ensures that the parental lines are genetically uniform and stable, providing a consistent foundation for subsequent hybridization that will introduce diversity.
2Manufacturing precision
If self-pollination is used to develop inbred plants, then uniformity and homozygosity are improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
Self-pollination and selection are performed in advance to develop homozygous inbred lines with uniform genetics. This preliminary uniformity is essential before crossing, as it ensures that the parental lines are stable and predictable, allowing the subsequent cross to reliably introduce the desired genetic diversity.
Solution Approach 2:
Homozygous inbred lines serve as intermediaries between the uniformity achieved through self-pollination and the genetic diversity achieved through cross-pollination. These inbreds are the standardized building blocks that, when crossed, generate the diverse yet uniform hybrid population.
3Productivity
If male sterility factors are introduced to prevent self-pollination, then cross-pollination efficiency is improved, but plant complexity increases
Solution Approach 1:
The plant's own genetic system is modified to prevent self-pollination through male sterility factors. The plant essentially serves itself by having its reproductive system automatically prevent self-fertilization, eliminating the need for external intervention or complex mechanical devices to enforce cross-pollination.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated I291741. The invention thus relates to the plants, seeds and tissue cultures of the variety I291741, and to methods for producing a corn plant produced by crossing a corn plant of variety I291741 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 I291741 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 I291741.