Maize Inbred 1PKDS77 for Trait Introgression and Hybrid Stability
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Solution Overview
Problem
The development of stable, high-yielding maize varieties and hybrids that are agronomically sound and adaptable to various conditions and environments is a time-consuming process, requiring years of breeding and selection to combine desirable traits such as disease resistance, drought tolerance, and improved yield.
Innovation Solution
The introduction of the novel maize variety 1PKDS77, which includes genetic modifications for traits like male sterility, herbicide tolerance, and disease resistance, achieved through backcrossing and genetic transformation, along with processes for producing hybrid seeds and plants that maintain the desired characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding processes are used to develop new maize varieties, then desirable traits can be combined, but the process is time-consuming and requires years of breeding and selection
Solution Approach 1:
The patent applies preliminary action by pre-establishing inbred lines with desired traits through controlled self-pollination before the actual variety development. The inbred lines are prepared in advance with specific characteristics (disease resistance, drought tolerance, yield potential), allowing the final variety development to start from a ready-to-combine foundation rather than beginning from scratch, thus reducing the overall time required.
Solution Approach 2:
The patent segments the complex variety development process into distinct manageable stages: (1) development of inbred lines with specific traits, (2) crossing of inbred lines to create hybrids, and (3) evaluation and selection of superior hybrids. This segmentation allows parallel progression of multiple traits and lines simultaneously, reducing the sequential time required compared to traditional single-stage breeding.
2Productivity
If multiple desirable traits are combined in a single variety, then agronomic performance improves, but the complexity of breeding processes increases
Solution Approach 1:
The patent divides the multi-trait combination process into separate inbred line developments, where each line is optimized for specific traits (e.g., one line for disease resistance, another for yield). This segmentation allows independent optimization of each trait without complicating the overall breeding process, as the standardized inbred lines can then be systematically crossed and evaluated.
Solution Approach 2:
The patent merges the advantages of multiple inbred lines through controlled crossing to create hybrids that exhibit complementary traits. By combining lines with different strength in specific traits, the final hybrid achieves superior overall performance (e.g., high yield combined with disease resistance) while the breeding process remains manageable through standardized crossing protocols.
3Stability of the object's composition
If inbred lines are developed through self-pollination, then genetic uniformity is achieved, but the process requires multiple generations and careful selection
Solution Approach 1:
The patent applies preliminary action by conducting the self-pollination and inbreeding process in advance to establish stable inbred lines before the final variety development. The inbreeding generations are completed beforehand, allowing the lines to achieve genetic uniformity and stability prior to being used in hybrid crosses, thus reducing the time required during the actual variety development phase.
Solution Approach 2:
The patent employs self-service by utilizing self-pollination as the primary mechanism for inbreeding. The inbred lines are produced by self-pollinating plants, which automatically ensures genetic uniformity and homogeneity without requiring external intervention for each generation. This self-service approach simplifies the breeding process and reduces the time and labor required compared to manual cross-pollination methods.
Data Source
AI summary
A novel maize variety designated 1PKDS77 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PKDS77 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PKDS77 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 1PKDS77 or a locus conversion of 1PKDS77 with another maize variety.