Maize Inbred PH17SB Trait Integration via Segmentation
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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
Development of a novel maize variety, PH17SB, through selective breeding and genetic manipulation to introduce desired traits such as abiotic stress tolerance, disease resistance, and improved agronomic characteristics, along with processes for making PH17SB seeds and plants, including backcross conversion and transformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional plant breeding is used, then basic crop production is maintained, but desirable traits such as disease resistance, drought tolerance, and uniformity cannot be effectively combined
Solution Approach 1:
The patent applies segmentation by developing inbred lines through repeated self-pollination and selection, creating genetically uniform segments that can be reliably combined. The inbred line PH17SB represents a segmented, homogeneous genetic unit with stable traits that can be consistently reproduced across generations, enabling reliable combination with other inbreds to produce uniform hybrids.
Solution Approach 2:
The patent merges multiple desirable traits into a single inbred line through selective breeding. PH17SB combines disease resistance, drought tolerance, and uniformity in one genetically stable line, allowing these traits to be merged with other inbreds to create hybrids that exhibit all desired characteristics simultaneously.
2Productivity
If mechanical harvesting is implemented, then harvesting efficiency is improved, but uniformity of plant characteristics becomes critical and difficult to maintain
Solution Approach 1:
The patent applies parameter changes by selecting and stabilizing specific phenotypic parameters (plant height, ear height, maturity date, stand establishment) through repeated self-pollination and selection. This creates an inbred line with consistent parameter values that ensure uniform plant characteristics, which are essential for reliable mechanical harvesting while maintaining high productivity.
3Adaptability or versatility
If backcross conversion and transformation processes are used, then specific traits can be introduced, but the complexity of the breeding process increases
Solution Approach 1:
The patent applies preliminary action by first establishing a stable inbred line (PH17SB) with desired traits through multiple generations of self-pollination and selection before using it for backcross conversion. This preliminary development of a uniform, stable inbred simplifies subsequent backcrossing operations, as the recurrent parent has already been optimized for the desired traits, reducing the overall complexity despite the multi-step process.
Data Source
AI summary
A novel maize variety designated PH17SB and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH17SB with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH17SB 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 PH17SB or a locus conversion of PH17SB with another maize variety.