Maize Inbred 1PSHT39 for Faster Hybrid Breeding and Trait Stacking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The development of new maize varieties is a time-consuming process that requires years to combine desirable traits such as disease resistance, drought tolerance, and high yield, posing challenges in efficiently producing stable and agronomically sound maize varieties.
Innovation Solution
The development of the novel maize variety 1PSHT39, which incorporates genetic modifications and cytoplasmic factors for traits like male sterility, disease resistance, and improved agronomic characteristics through backcross conversion, genetic manipulation, and transformation, along with processes for crossing and hybrid seed production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize variety development processes are used to combine desirable traits, then disease resistance, drought tolerance, and yield improvement are achieved, but the development time becomes excessively long (6-12 years)
Solution Approach 1:
The patent applies preliminary action by pre-establishing inbred lines with specific desirable traits (disease resistance, drought tolerance, male sterility) before the actual hybrid development process. The inbred line 1PSHT39 is developed in advance with stacked resistance genes and cytoplasmic male sterility, so that when combined with other inbreds, the hybrid immediately inherits these pre-validated traits, significantly reducing the time needed for trait combination and field testing.
2Productivity
If multiple desirable traits are combined in a single maize variety through traditional breeding, then agronomic soundness and yield are improved, but the breeding process becomes overly complex and time-consuming
Solution Approach 1:
The patent segments the complex breeding process into distinct functional components: inbred line development with specific traits (disease resistance, drought tolerance), cytoplasmic male sterility system establishment, and hybrid combination. Each inbred line is developed independently with specific trait stacks, then combined through controlled crossing. This segmentation allows parallel development of multiple trait combinations, reducing overall process complexity and time.
Solution Approach 2:
The patent uses cytoplasmic male sterility (CMS) as an intermediary mechanism to simplify hybrid seed production. The CMS trait in the inbred line prevents self-pollination, ensuring that all seeds produced are true hybrids with the desired trait combinations. This intermediary system eliminates the need for manual detasseling and ensures consistent hybridization, greatly simplifying the breeding and seed production process.
3Stability of the object's composition
If traditional breeding methods are used to develop new maize varieties, then stable varieties with desired traits are produced, but the process requires six to twelve years from first cross to seed delivery
Solution Approach 1:
The patent applies parameter changes by utilizing cytoplasmic male sterility to fundamentally alter the breeding system parameters. The CMS trait changes the pollination parameter from potential self-pollination to forced cross-pollination, ensuring 100% hybrid seed production. This parameter change allows for more efficient seed production cycles and reduces the time from crossing to seed delivery while maintaining variety stability through the use of inbred lines with fixed genetic compositions.
Data Source
AI summary
A novel maize variety designated 1PSHT39 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PSHT39 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PSHT39 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 1PSHT39 or a locus conversion of 1PSHT39 with another maize variety.