Maize Variety PHR6E Marker-Assisted Breeding for Disease Resistance
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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 maize variety, PHR6E, with specific genetic traits and processes for crossing, backcross conversion, and transformation to introduce desired characteristics, enhancing traits like drought resistance, disease resistance, and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding methods are used to combine desirable traits, then disease resistance and drought tolerance can be achieved, but the time required for breeding and the uniformity of plant characteristics are compromised
Solution Approach 1:
The patent employs marker-assisted selection to preliminarily identify and select plants carrying desired disease resistance genes before actual breeding crosses are performed. This preliminary genetic screening accelerates the breeding process by eliminating the need for lengthy field trials to assess disease resistance, thereby reducing overall breeding time while maintaining reliable disease resistance traits in the final variety
2Reliability
If traditional plant breeding methods are used to combine desirable traits, then drought tolerance can be achieved, but uniformity of plant characteristics such as germination, stand establishment, and maturity is compromised
Solution Approach 1:
The patent utilizes molecular markers as feedback mechanisms to continuously monitor and select for both drought tolerance genes and uniformity traits during the breeding process. By using marker-assisted selection, breeders can simultaneously track multiple desired characteristics including germination uniformity, stand establishment, and maturity timing, ensuring that all traits are uniformly expressed in the final variety without compromising drought tolerance
3Adaptability or versatility
If traditional plant breeding methods are used, then genetic diversity can be maintained, but the efficiency of combining multiple desirable traits in a single variety is reduced
Solution Approach 1:
The patent replaces traditional mechanical phenotypic selection methods with molecular marker-based genetic selection. This substitution allows for rapid, accurate identification of plants carrying multiple desirable traits simultaneously, dramatically increasing breeding efficiency while maintaining genetic diversity through precise selection of specific gene combinations rather than relying on random phenotypic variation
Data Source
AI summary
A novel maize variety designated PHR6E and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PHR6E with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PHR6E 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 variety PHR6E or a locus conversion of PHR6E with another maize variety.