Maize Inbred Line NPID3649 for Regional Corn Belt Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current corn breeding methods face challenges in producing high-yielding, agronomically sound plants that are uniformly adapted across the U.S. Corn Belt, as regional growing conditions and specific issues like Gray Leaf Spot infection, cool temperatures, and soil pH levels require region-specific traits, and existing hybrids are not uniformly adapted for broad regional use.
Innovation Solution
The development of maize inbred line NPID3649, which includes a process for producing F1 hybrid seeds by crossing NPID3649 with other maize plants to introduce desired traits such as herbicide resistance, insect resistance, and disease resistance, and a method for backcrossing to stabilize these traits, ensuring consistent performance across different environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing hybrid maize varieties are used, then they provide robust and vigorous plants with high yield, but they are not uniformly adapted across different Corn Belt regions due to regional variations in growing conditions and disease pressures
Solution Approach 1:
The patent applies local quality by developing region-specific inbred lines (NW, NC, SC, SB, WB, EB) each optimized for particular Corn Belt regions. Each inbred line incorporates traits specifically adapted to local conditions such as disease resistance (Gray Leaf Spot, Northern Corn Leaf Blight), temperature tolerance, and soil pH adaptation for its target region, while maintaining high yield potential through heterosis when crossed with other inbred lines
2Stability of the object's composition
If inbred lines are used for hybrid seed production, then uniformity and reproducibility of hybrid seed are achieved, but the inbred plants themselves show decreased vigor and are difficult to produce
Solution Approach 1:
The patent uses male sterility systems as intermediaries to facilitate hybrid seed production. Specifically, it employs cytoplasmic male sterility (CMS) where the female parent has sterile cytoplasm that prevents self-pollination, and nuclear restorer genes that restore fertility in the hybrid. This intermediary mechanism eliminates the need for manual detasseling and enables efficient production of uniform hybrid seed while maintaining the vigor benefits of heterosis
3Adaptability or versatility
If backcrossing is used to transfer specific traits into a desirable cultivar, then the desired trait is successfully introduced, but the breeding process becomes more complex and time-consuming
Solution Approach 1:
The patent applies preliminary action by pre-selecting and developing inbred lines that already possess desired traits (such as disease resistance, herbicide tolerance, or quality characteristics) before crossing. This preliminary development of trait-containing inbreds reduces the need for extensive backcrossing in later generations, as the traits are already fixed in the parental lines, thereby simplifying the overall breeding process while maintaining trait incorporation effectiveness
Data Source
AI summary
The present invention provides an inbred corn line designated NPID3649, methods for producing a corn plant by crossing plants of the inbred line NPID3649 with plants of another corn plant. The invention further encompasses all parts of inbred corn line NPID3649, including culturable cells. Additionally provided herein are methods for introducing transgenes into inbred corn line NPID3649, and plants produced according to these methods.