Inbred Maize Line PH4RD for Hybrid Breeding
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Solution Overview
Problem
Current maize breeding techniques face challenges in combining desirable traits such as disease resistance, drought tolerance, and uniformity, which are essential for efficient crop production and yield improvement.
Innovation Solution
Development of a novel inbred maize variety, PH4RD, which can be used to create hybrid maize plants with improved traits through crossing and introgression of specific genetic material, allowing for the introduction of resistance to various stresses and enhanced agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding techniques are used to combine desirable traits, then disease resistance and drought tolerance can be improved, but the time required to develop new varieties increases significantly
Solution Approach 1:
The patent creates an inbred maize line (PH4RD) with pre-established uniformity and desirable baseline traits through preliminary breeding actions. This inbred line serves as a prepared genetic foundation that already possesses improved disease resistance and drought tolerance characteristics, allowing breeders to start from a superior baseline rather than beginning from scratch in traditional breeding programs.
Solution Approach 2:
The breeding program is segmented into distinct phases: first developing the inbred PH4RD line with specific desirable traits, then using it as a parent in hybrid combinations. This segmentation allows the complex task of combining multiple traits to be broken down into manageable steps, reducing overall development time.
2Productivity
If traditional plant breeding is used to achieve uniformity of plant characteristics, then mechanical harvesting efficiency improves, but the complexity of the breeding program increases
Solution Approach 1:
The patent emphasizes creating uniformity within the inbred PH4RD line and its hybrid progeny for key characteristics such as germination, stand establishment, growth rate, maturity, plant height, and ear height. This homogeneity is achieved through inbreeding and selection, ensuring that plants are sufficiently uniform to enable efficient mechanical harvesting operations without requiring overly complex breeding interventions.
3Productivity
If multiple desirable traits are combined in a single variety, then yield and agronomic quality improve, but the difficulty of breeding and maintaining the variety increases
Solution Approach 1:
The inbred PH4RD line is designed as a universal parent that can be used to produce multiple different hybrid varieties, each combining PH4RD's desirable traits with complementary traits from different second parent inbreds. This multi-functionality allows a single breeding achievement (PH4RD) to serve multiple purposes and generate numerous improved varieties, reducing the overall breeding workload.
Data Source
AI summary
A novel inbred maize variety designated PH4RD and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing inbred maize variety PH4RD with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH4RD through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. Hybrid maize seed, plant or plant part produced by crossing the inbred variety PH4RD or a trait conversion of PH4RD with another maize variety. Inbred maize varieties derived from inbred maize variety PH4RD, methods for producing other inbred maize varieties derived from inbred maize variety PH4RD and the inbred maize varieties and their parts derived by the use of those methods.