Maize Inbred PH1VTJ Breeding for Disease Resistance and Uniformity
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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 the novel maize variety PH1VTJ, which is homozygous and can be reproduced through self-pollination, combined with advanced breeding methods like backcrossing and transformation to introduce desired traits, resulting in a hybrid with improved agronomic qualities.
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 applies preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, drought tolerance) before hybridization. The inbred PH1VTJ and its sister inbreds were developed through preliminary breeding and selection processes, establishing a foundation of resistance traits that can be combined in hybrids without extending maturity time, as the parent lines were specifically selected for both resistance and acceptable maturity characteristics.
Solution Approach 2:
The patent employs parameter changes by evaluating and selecting parent inbreds based on specific quantitative parameters including disease resistance scores, drought tolerance ratings, and maturity timing. By changing and optimizing these parameters in the parent lines before hybridization, the resulting hybrids achieve disease resistance and drought tolerance without sacrificing uniformity or extending maturity time excessively.
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, growth rate, maturity, plant height and ear height is reduced
Solution Approach 1:
The patent applies segmentation by dividing the breeding process into distinct stages: developing and characterizing individual inbred lines with specific traits (including drought tolerance), then combining selected inbreds in controlled hybridizations. This segmentation allows each parent line to be optimized for specific traits while maintaining uniformity within each line, and the hybrid combines these uniform parental characteristics.
Solution Approach 2:
The patent uses parameter changes by establishing and measuring specific uniformity parameters (germination rate, stand establishment, growth rate, maturity, plant height, ear height) during the development and evaluation of inbred lines. By controlling and standardizing these parameters in the parent inbreds, the resulting hybrids exhibit improved uniformity across these characteristics while maintaining drought tolerance.
3Reliability
If inbred maize variety PH1VTJ is used as a parent in hybrid production, then enhanced resistance to diseases and abiotic stresses with improved yield is achieved, but the complexity of breeding and reproduction processes increases
Solution Approach 1:
The patent applies self-service by developing inbred line PH1VTJ with self-pollinating capability, allowing the variety to reproduce itself without requiring complex cross-pollination protocols for maintenance. This self-service characteristic simplifies the breeding and reproduction processes while maintaining the enhanced resistance to diseases and abiotic stresses, as the inbred can be propagated true-to-type through self-pollination.
Data Source
AI summary
A novel maize variety designated PH1VTJ and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1VTJ with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1VTJ 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 PH1VTJ or a locus conversion of PH1VTJ with another maize variety.