CMS Parthenocarpic Pepper Cultivar for Seedless Virus-Resistant Fruit
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Solution Overview
Problem
There is a need for improved pepper varieties with enhanced agronomic and consumer traits, including disease resistance and the ability to produce seedless fruits.
Innovation Solution
Development of a novel hybrid pepper cultivar Navelito, which is cytoplasmic male sterile (CMS) and parthenocarpic, producing seedless orange fruits at maturity, and resistant to Tobamovirus pathotype 0 and Tomato Spotted Wilt Virus pathotype 0, with the potential to incorporate additional traits through genetic modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional pepper varieties are used for cultivation, then they can produce fruits with seeds, but they lack disease resistance and require pollination management
Solution Approach 1:
The patent extracts and eliminates the need for pollination management by developing a parthenocarpic pepper cultivar that produces seedless fruits without fertilization. The CMS trait removes functional male reproductive organs, while the parthenocarpic trait enables fruit development without pollen, thereby extracting the complexity of pollination management from the cultivation process.
Solution Approach 2:
The patent introduces cytoplasmic male sterility (CMS) as an intermediary mechanism that naturally prevents self-pollination and eliminates the need for manual pollination management. The CMS trait acts as a biological mediator that ensures the plant cannot produce viable pollen, thereby simplifying cultivation by removing the need for pollination control.
2Ease of operation
If seedless fruit production is achieved through CMS and parthenocarpy, then fruit quality is improved, but the plant cannot self-pollinate or act as pollen donor
Solution Approach 1:
The patent inverts the traditional breeding approach by using CMS lines as female parents in cross-breeding programs. Instead of requiring the plant to be self-fertile, the invention leverages the CMS trait to ensure that only controlled cross-pollination occurs, where the CMS line receives pollen from selected male parents, thereby improving fruit production while maintaining breeding versatility through controlled crosses.
3Reliability
If traditional pepper varieties are cultivated, then they can be used for breeding, but they lack resistance to specific viruses and require more management
Solution Approach 1:
The patent merges multiple desirable traits into a single cultivar: cytoplasmic male sterility (CMS), parthenocarpy for seedless fruit production, and resistance to Tobamovirus and Tomato Spotted Wilt Virus. By combining these traits in one genetic package, the invention achieves virus resistance while simultaneously simplifying cultivation management through natural prevention of self-pollination and elimination of seed production.
Data Source
AI summary
The present invention provides novel pepper plants and plant parts, seed, fruit, and tissue culture therefrom. The invention also provides methods for producing a pepper plant by crossing the pepper plants of the invention with themselves or another pepper plant. The invention also provides plants produced from such a crossing as well as plant parts, seed, fruit, and tissue culture therefrom.