Maize Inbred PH11V0 Breeding for Stress Resistance and Yield
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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, PH11V0, which incorporates specific genetic traits through backcross conversion and transformation, enhancing resistance to various stresses and improving agronomic qualities like yield and maturity.
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 yield uniformity is reduced
Solution Approach 1:
The patent employs preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, drought tolerance) before hybrid development. The inbred lines are evaluated under controlled conditions and selected based on their performance in stress environments, allowing the breeding program to start with pre-validated genetic material rather than performing extensive screening during hybrid development.
Solution Approach 2:
The patent applies parameter changes by modifying key breeding parameters including selecting inbreds with specific maturity ranges (100-120 day maturity), choosing disease resistance profiles (resistance to specific pathogens), and optimizing plant architecture parameters (plant height, ear height, grain fill characteristics) to achieve both stress tolerance and timely maturity.
2Reliability
If traditional plant breeding methods are used to combine desirable traits, then drought tolerance can be achieved, but yield uniformity is reduced
Solution Approach 1:
The patent applies homogeneity by developing inbred lines that are highly homozygous and genetically uniform, then using these uniform inbreds as parents to produce F1 hybrids. The inbred lines are maintained through controlled self-pollination and selection to ensure genetic consistency, which translates to uniform hybrid performance across large planting areas and varying environmental conditions.
Solution Approach 2:
The patent employs preliminary action by conducting extensive preliminary evaluation of inbred lines under drought stress conditions before selecting them for hybrid development. The inbreds are tested in controlled environments and field trials to verify their drought tolerance and uniformity, ensuring that only the most consistent and stress-tolerant lines are advanced to hybrid production.
3Productivity
If traditional plant breeding methods are used to improve yield, then greater yield potential can be achieved, but uniformity of plant characteristics is reduced
Solution Approach 1:
The patent applies homogeneity by selecting and maintaining inbred lines with high genetic uniformity through controlled breeding and selection procedures. The inbreds are developed to be highly homozygous at key loci controlling yield and plant architecture, ensuring that the resulting F1 hybrids exhibit uniform performance for traits such as plant height, ear height, maturity, and yield across diverse growing conditions.
Solution Approach 2:
The patent applies parameter changes by optimizing specific genetic and phenotypic parameters including selecting for consistent plant height ranges, uniform ear placement, synchronized maturity timing, and uniform grain fill patterns. These parameter optimizations are achieved through selective breeding of inbreds with complementary gene pools that enhance both yield potential and uniformity.
Data Source
AI summary
A novel maize variety designated PH11V0 and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH11V0 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH11V0 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 PH11V0 or a locus conversion of PH11V0 with another maize variety.