Inbred Corn Line CD9 Yield Stability via Mutagenesis
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Solution Overview
Problem
There is a need for stable, high-yielding corn hybrids that are agronomically sound to maximize ear or kernel production, which current breeding methods struggle to achieve consistently.
Innovation Solution
The development of a novel inbred corn line, CD9, which includes methods for producing seeds, plants, and derivatives with specific physiological and morphological characteristics, using techniques such as mutagenesis, tissue culture, and transgenic approaches to enhance traits like yield, disease resistance, and nutritional quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional breeding methods are used to develop corn hybrids, then the breeding process is relatively simple and cost-effective, but the ability to achieve stable high yields and consistent agronomic traits is insufficient
Solution Approach 1:
The patent employs mutagenesis to induce genetic variations and alter physiological parameters of corn plants. By treating seeds or plant tissue with mutagens (chemical or physical), the invention creates novel genetic variations that can lead to improved yield and more consistent agronomic traits, directly addressing the limitation of conventional breeding in achieving stable high yields.
Solution Approach 2:
The patent utilizes tissue culture as an intermediary technique to propagate selected mutant plants and maintain desired traits. Through in vitro cultivation of plant tissues, the invention can produce large numbers of plants with consistent genetic characteristics, thereby improving trait consistency and reliability while enabling systematic selection of high-yielding hybrids.
2Stability of the object's composition
If inbred lines are developed through repeated selfing to achieve homozygosity, then genetic uniformity is improved, but inbreeding depression occurs reducing vigor and yield potential
Solution Approach 1:
The patent applies mutagenesis to inbred lines to convert the harmful effect of inbreeding depression into a beneficial outcome. By inducing mutations in homozygous inbred plants, the invention can restore vigor and yield potential while maintaining genetic uniformity, effectively transforming the disadvantage of inbreeding into an opportunity for creating superior inbred lines with both stability and high productivity.
3Manufacturing precision
If multiple breeding cycles are conducted to select for desirable traits, then trait improvement is achieved, but the breeding time and development cycle are significantly extended
Solution Approach 1:
The patent performs mutagenesis on seeds or plant tissue before field testing, creating genetic variations in advance. This preliminary genetic modification allows breeders to screen for desirable traits in the M1 or M2 generation rather than requiring multiple cycles of conventional crossing and selection, significantly reducing the time needed to develop new varieties while maintaining accurate trait selection through controlled mutagenesis and systematic screening.
Data Source
AI summary
Inbred corn line, designated CD9, are disclosed. The disclosure relates to the seeds of inbred corn line CD9, to the plants and plant parts of inbred corn line CD9 and to methods for producing a corn plant, either inbred or hybrid, by crossing inbred corn line CD9 with itself or another corn line. The disclosure also relates to products produced from the seeds, plants, or parts thereof, of inbred corn line CD9 and/or of the hybrids produced using the inbred as a parent. The disclosure further relates to methods for producing a corn plant containing in its genetic material one or more transgenes and to the transgenic plants produced by that method and to methods for producing other corn lines derived from inbred corn line CD9.