Maize Inbred 1PQCD72 Accelerates Breeding Through Preliminary Selection
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Solution Overview
Problem
The development of new maize varieties is a time-consuming process that takes six to twelve years, and there is a continuous need for stable, high-yielding maize varieties with improved traits such as disease resistance, drought tolerance, and better agronomic characteristics.
Innovation Solution
A novel maize variety, 1PQCD72, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and drought tolerance, achieved through backcross conversion, genetic manipulation, and transformation, allowing for the creation of hybrid seeds with enhanced physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to develop new varieties with improved traits, then disease resistance and yield stability are improved, but the development time increases significantly (6-12 years)
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred line 1PQCD72 with specific desirable traits (disease resistance, yield stability) before hybrid development. The inbred line is prepared in advance with known genetic characteristics, allowing faster hybridization and evaluation compared to traditional breeding where selection occurs throughout the 6-12 year process. This preliminary preparation of genetic material accelerates the overall variety development timeline.
2Adaptability or versatility
If multiple desirable traits are combined in a single maize variety through traditional breeding, then agronomic characteristics and quality are improved, but the breeding process complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding process into distinct stages: (1) development and characterization of inbred line 1PQCD72 with specific traits, (2) hybridization with complementary inbreds, and (3) evaluation of F1 hybrids. This segmentation allows each stage to be optimized independently, reducing overall process complexity while achieving multiple desirable traits in the final hybrid variety.
Solution Approach 2:
The patent applies universality by developing inbred line 1PQCD72 as a versatile parent line that can be crossed with multiple different inbreds to produce various hybrid combinations. The inbred line serves multiple functions: providing disease resistance, yield stability, and serving as a general combiner across different hybrid backgrounds. This multi-functionality reduces breeding complexity by using a single proven parent line rather than developing multiple specialized lines.
3Productivity
If new maize varieties are developed to meet program goals and combine desirable traits, then productivity and resistance are improved, but the time from first cross to finished seed delivery increases (6-12 years)
Solution Approach 1:
The patent applies feedback by implementing systematic evaluation of F1 hybrid combinations for yield performance, disease resistance, and other agronomic traits. This feedback mechanism allows rapid identification of superior hybrid combinations, enabling breeders to make informed decisions about which combinations to advance for variety registration. The feedback loop accelerates the selection process compared to traditional methods, reducing the time from initial crossing to finished seed delivery while maintaining high productivity standards.
Data Source
AI summary
A novel maize variety designated 1PQCD72 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PQCD72 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PQCD72 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety 1PQCD72 or a locus conversion of 1PQCD72 with another maize variety.