Stable Wheat Variety Breeding for Yield and Disease Resistance
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Solution Overview
Problem
Existing wheat varieties lack a comprehensive combination of desirable traits such as higher seed yield, disease resistance, drought and heat tolerance, improved milling properties, and enhanced agronomic characteristics, limiting their adaptability and commercial utility.
Innovation Solution
Development of the wheat variety 6PKTR02B, which is homozygous and stable, incorporating genetic modifications and locus conversions to introduce traits like herbicide resistance, disease resistance, and altered nutritional qualities through methods like genetic transformation and backcrossing, enabling the production of hybrid seeds and plants with improved characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional breeding methods are used to combine desirable traits, then some improvement in traits may be achieved, but the variety lacks a balanced combination of multiple desirable traits including high seed yield, disease resistance, drought tolerance, heat tolerance, and improved milling properties
Solution Approach 1:
The patent combines multiple desirable traits (disease resistance, drought tolerance, heat tolerance, high seed yield, and improved milling properties) from different parental lines into a single wheat variety 6PKTR02B through systematic breeding programs, achieving a balanced combination of traits that conventional single-trait breeding cannot accomplish
Solution Approach 2:
The breeding process involves changing genetic parameters through cross-pollination, backcrossing, and selection to achieve optimal combinations of traits. The variety 6PKTR02B represents a specific genetic parameter configuration that balances multiple competing traits for superior overall performance
2Productivity
If multiple breeding steps and genetic modifications are performed to achieve desired trait combinations, then trait improvement is achieved, but the development process involves significant intervention and complexity
Solution Approach 1:
The patent employs preliminary selection of parental lines with specific desirable traits, and uses preliminary crossing schemes (such as creating F1 hybrids followed by backcrossing) to systematically introduce and fix desired traits before final variety development, reducing the complexity of later breeding steps
Solution Approach 2:
The breeding program uses intermediate populations and backcrossing generations as mediators to gradually introduce desired traits from donor parents into the recurrent parent background, allowing complex trait combinations to be achieved through manageable sequential steps rather than direct complex crosses
Data Source
AI summary
A wheat variety designated 6PKTR02B, the plants and seeds of wheat variety 6PKTR02B, methods for producing a wheat plant produced by crossing the variety 6PKTR02B with another wheat plant, and hybrid wheat seeds and plants produced by crossing the variety 6PKTR02B with another wheat line or plant, and the creation of variants by backcrossing, mutagenesis or transformation of variety 6PKTR02B are disclosed. Methods for producing other wheat varieties or breeding lines derived from wheat variety 6PKTR02B and to wheat varieties or breeding lines produced by those methods are also provided.