Maize Inbred 1PREC61 Breeding via Male Sterility and Segmentation
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, taking six to twelve years, and existing technologies face challenges in combining desirable traits such as disease resistance, drought tolerance, and high yield in a stable and agronomically sound manner.
Innovation Solution
The introduction of the novel maize variety 1PREC61, which involves crossing with other maize plants to introduce traits like male sterility, disease resistance, and drought tolerance through backcross conversion, genetic manipulation, and transformation, along with specific breeding processes to achieve desired agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding processes are used to develop new maize varieties, then desirable traits such as disease resistance and drought tolerance can be combined, but the process takes six to twelve years which is time-consuming
Solution Approach 1:
The patent employs preliminary action by using male-sterile inbred lines to prevent self-pollination before crossing occurs. This ensures that only controlled cross-pollination between desired parent lines occurs, eliminating the need for time-consuming selection and elimination of unwanted self-pollinated offspring in later generations. The male sterility trait is established in the breeding program from the outset, streamlining the entire breeding process.
2Productivity
If multiple desirable traits are combined in a single variety, then agronomic performance and yield are improved, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct modular components: male-sterile inbred lines for controlled pollination, separate parent lines each contributing specific desirable traits (disease resistance, drought tolerance, yield components), and systematic crossing schemes. This modular approach allows independent development and evaluation of each trait component before combining them, reducing overall program complexity while achieving multi-trait varieties.
3Productivity
If self-pollination is prevented to maintain hybrid vigor, then yield and performance are maximized, but additional genetic mechanisms such as male sterility must be introduced
Solution Approach 1:
The patent employs self-service by utilizing cytoplasmic male sterility (CMS) where the plant's own cytoplasmic genetics automatically prevent self-pollination. The male-sterile trait is inherited through the maternal line, allowing the plant to serve its own pollination control function without external intervention. This biological self-regulation mechanism eliminates the need for manual detasseling or complex external control systems while maintaining hybrid vigor.
Data Source
AI summary
A novel maize variety designated 1PREC61 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PREC61 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PREC61 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety 1PREC61 or a locus conversion of 1PREC61 with another maize variety.