Maize Inbred 1PPCG13 Breeding via Male Sterility
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, taking six to twelve years, and existing technologies face challenges in combining desirable traits such as disease resistance, drought tolerance, and high yield in a stable and agronomically sound manner.
Innovation Solution
A novel maize variety, 1PPCG13, 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 agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to combine desirable traits, then stable and agronomically sound varieties are achieved, but the development process takes six to twelve years
Solution Approach 1:
The patent employs preliminary action by using male-sterile inbred lines to prevent self-pollination before crossing occurs. This ensures that only desired cross-pollination between specific parental lines takes place, eliminating the need for time-consuming selection and verification steps in later generations to ensure genetic purity and stability.
Solution Approach 2:
The patent uses male-sterility as an intermediary mechanism to control pollination. The male-sterile parent acts as a mediator that receives pollen only from the intended male parent, ensuring precise genetic combination. This intermediary system accelerates breeding by guaranteeing hybridization success without requiring manual emasculation or complex isolation procedures.
2Productivity
If multiple desirable traits are combined in a single variety, then agronomic performance and yield are improved, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct parental lines, each contributing specific desirable traits. One parent contributes disease resistance while the other contributes yield potential or stress tolerance. This segmentation allows independent selection and optimization of traits in each parent before combining them, simplifying the overall breeding program complexity while achieving multi-trait improvement in the hybrid.
3Ease of manufacture
If male sterility is introduced to prevent self-pollination, then hybrid seed production is facilitated, but additional genetic manipulation steps are required
Solution Approach 1:
The patent employs self-service through cytoplasmic male-sterility systems where the female parent automatically prevents self-pollination without requiring human intervention for emasculation. The male-sterile parent's own genetics serve the function of controlling pollination, eliminating the need for labor-intensive manual operations while maintaining ease of hybrid seed production.
Data Source
AI summary
A novel maize variety designated 1PPCG13 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PPCG13 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PPCG13 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 1PPCG13 or a locus conversion of 1PPCG13 with another maize variety.