Cotton Variety PX2045-11WRF Breeding via Cytoplasmic Male Sterility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cotton breeding is a slow and costly process that requires expertise, and existing cotton varieties lose commercial competitiveness over time, necessitating the development of improved germplasm with traits like broad adaptation, high yield stability, and resistance to pests and herbicides.
Innovation Solution
The development of a novel cotton inbred variety, PX2045-11WRF, which exhibits excellent yield stability, fiber properties, Lepidoptera resistance, and glyphosate tolerance, along with methods for producing and utilizing this variety in hybrid cotton plants to enhance yield and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional self-pollination and sib-pollination techniques are used for cotton breeding, then inbreeding can be accomplished, but the vigor of the lines decreases and the process becomes slow and costly
Solution Approach 1:
The patent introduces a cytoplasmic male sterile line as an intermediary to enable controlled cross-pollination. This male sterile line acts as a mediator that prevents self-pollination in the female parent while allowing controlled pollination by the male parent, thereby achieving faster breeding without the vigor loss associated with traditional inbreeding methods
Solution Approach 2:
The patent employs preliminary action by pre-establishing cytoplasmic male sterility in the female parent line before the breeding cross. This preliminary genetic modification ensures that self-pollination cannot occur, forcing cross-pollination and accelerating the breeding process while maintaining line vigor through controlled hybridization
2Productivity
If existing cotton varieties are used over time, then production continues, but the varieties lose commercial competitiveness
Solution Approach 1:
The patent applies parameter changes by modifying key genetic parameters of the cotton variety through cross-breeding with specific parental lines. The resulting PX2045-11WRF variety exhibits improved parameters including yield stability, fiber quality metrics (micronaire, length, strength), and adaptability to different production environments, thereby restoring and enhancing commercial competitiveness
Solution Approach 2:
The patent creates a composite genetic structure by combining desirable traits from multiple parental lines into a single hybrid variety. The PX2045-11WRF variety represents a composite of genetic material that integrates high yield stability, superior fiber properties, broad adaptation, and resistance traits, making it more commercially competitive than existing varieties
3Productivity
If cotton varieties are developed for hybrid production, then yield can be improved, but the breeding process requires extensive inbreeding over multiple generations
Solution Approach 1:
The patent uses preliminary action by pre-establishing cytoplasmic male sterility and other desirable traits in parental lines before hybridization. This preliminary preparation allows direct production of hybrid seeds with high yield potential without requiring multiple generations of inbreeding, significantly reducing the time loss associated with traditional breeding
Solution Approach 2:
The patent introduces cytoplasmic male sterile lines as intermediaries that facilitate rapid hybrid seed production. These intermediary lines enable single-generation hybridization to produce high-yielding varieties, eliminating the need for extensive multi-generational inbreeding programs and thereby reducing breeding duration
Data Source
AI summary
The disclosure relates to a cotton variety, designated PX2045-11WRF, the plants and seeds of the cotton variety PX2045-11WRF, methods for producing a cotton plant, either varietal or hybrid, produced by crossing the cotton variety PX2045-11WRF with itself or with another cotton plant, hybrid cotton seeds and plants produced by crossing the variety PX2045-11WRF with another cotton variety or plan, methods for producing a cotton plant containing in its genetic material one or more transgenes, and the transgenic cotton plants produced by that method. This disclosure also relates to cotton varieties derived from cotton variety PX2045-11WRF, to methods for producing other cotton varieties derived from cotton variety PX2045-11WRF, and to the varieties derived by the use of those methods.