Maize Variety PH18K6 Marker-Assisted 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 mechanical harvesting.
Innovation Solution
The development of a novel maize variety, PH18K6, which is homozygous and can be used to produce hybrid seeds through crossing with other maize plants, incorporating traits such as drought resistance and disease resistance, and further enhanced through backcross conversion and transformation processes.
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 complexity of the process increase
Solution Approach 1:
The patent employs preliminary action by using marker-assisted selection (MAS) to pre-identify and select plants carrying desired resistance genes before actual breeding crosses. Molecular markers are used to screen parent lines and progeny in advance, allowing breeders to make informed decisions about which plants to cross, thereby reducing the time required to develop resistant varieties while maintaining reliable disease resistance traits.
2Adaptability or versatility
If traditional plant breeding is used to develop new varieties, then desirable traits can be combined, but uniformity of plant characteristics deteriorates
Solution Approach 1:
The patent implements feedback through molecular marker-assisted selection, where DNA markers provide continuous feedback information about the presence and combination of desired traits in breeding populations. This allows breeders to monitor and control the inheritance of multiple traits simultaneously, ensuring uniformity in the resulting varieties while combining multiple desirable characteristics such as disease resistance, drought tolerance, and yield traits.
3Productivity
If mechanical harvesting is implemented, then crop production efficiency increases, but the requirement for uniformity in plant characteristics becomes more stringent
Solution Approach 1:
The patent applies parameter changes by using molecular markers to precisely control and standardize key plant development parameters such as maturity timing, plant height, and ear position. By selecting for uniform genetic backgrounds and standardized trait expressions through marker-assisted breeding, the resulting varieties exhibit consistent phenotypic parameters that are optimized for mechanical harvesting operations, thereby enabling high productivity while meeting the stringent uniformity requirements of mechanized agriculture.
Data Source
AI summary
A novel maize variety designated PH18K6 and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH18K6 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH18K6 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 PH18K6 or a locus conversion of PH18K6 with another maize variety.