Maize Inbred PH12TB Uniformity and Disease Resistance
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
Development of a novel maize variety, PH12TB, which is homozygous and can be used to produce hybrid seeds through crossing with other maize plants, incorporating traits such as resistance to diseases and insects, and improved agronomic qualities 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 to crop maturity is extended and uniformity of plant characteristics is reduced
Solution Approach 1:
The patent employs preliminary action by pre-selecting and pre-combining desirable traits (disease resistance, drought tolerance, uniformity) into the PH12TB inbred line through traditional breeding before hybridization. This allows the hybrid to inherit pre-packaged beneficial traits without requiring extended breeding time in the field.
Solution Approach 2:
The patent applies parameter changes by modifying the genetic composition of the PH12TB inbred line to achieve optimal balance between disease resistance and maturity time. Through backcrossing and selection, specific genetic parameters were adjusted to reduce time to maturity while maintaining resistance traits.
2Reliability
If traditional plant breeding is used to develop new varieties, then desirable traits can be combined, but uniformity of plant characteristics such as germination, stand establishment, growth rate, maturity, plant height and ear height is reduced
Solution Approach 1:
The patent applies universality by creating PH12TB as a universal inbred line that can be crossed with multiple different maize varieties to produce hybrids with consistent desirable traits. The inbred line serves multiple functions: providing disease resistance, drought tolerance, and uniformity across different hybrid combinations.
Solution Approach 2:
The patent employs feedback mechanisms through systematic evaluation and selection during the breeding process. Multiple generations of backcrossing and selection were performed with continuous monitoring of uniformity traits (germination, stand establishment, growth rate, maturity, plant height, ear height) to ensure consistent performance before finalizing the PH12TB variety.
3Productivity
If mechanical harvesting is used, then harvesting efficiency is improved, but uniformity of plant characteristics becomes more critical and harder to achieve
Solution Approach 1:
The patent applies parameter changes by optimizing specific plant characteristics (maturity timing, plant height, ear height uniformity) in the PH12TB inbred line to be compatible with mechanical harvesting requirements. These parameter adjustments ensure that hybrids derived from PH12TB exhibit the uniformity needed for efficient mechanical harvesting.
Data Source
AI summary
A novel maize variety designated PH12TB and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH12TB with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH12TB 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 PH12TB or a locus conversion of PH12TB with another maize variety.