Triploid Bush Watermelon Plants for High-Density Planting
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Solution Overview
Problem
Current methods for producing triploid hybrid watermelon plants with a bush growth habit and seedless fruit of high quality are limited, as they require specific pollenizers and result in lower yields and fruit quality due to chromosome imbalance and compatibility issues between diploid and tetraploid plants.
Innovation Solution
Development of triploid bush hybrid watermelon plants with a recessive 'bush' allele that confers a compact growth habit, allowing for higher planting density and increased fruit yield, using inbred diploid and tetraploid bush lines to produce triploid seeds and seedless fruits with improved quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional non-bush triploid watermelon hybrids are used, then the plants have normal growth habit with longer vines, but the planting density is lower and fruit yield per hectare is reduced
Solution Approach 1:
The patent applies parameter changes by introducing the recessive bush allele 'b' to alter the growth habit parameter of triploid watermelon plants. This genetic parameter change results in compact bush plants with shorter vines (≤150 cm) and shorter internodes, while maintaining normal leaf and fruit size parameters. The parameter change enables higher planting density and increased fruit yield per hectare without compromising fruit quality
2Ease of manufacture
If triploid hybrid plants are pollinated with diploid pollen, then seedless fruit of high quality is produced, but chromosome imbalance and compatibility issues reduce yield and quality
Solution Approach 1:
The patent changes the ploidy parameter by developing stable tetraploid bush parent lines (bbbb) through chromosome doubling of diploid bush lines (bb). This parameter change in the maternal parent creates better chromosomal compatibility with diploid pollenizers, reducing chromosome imbalance issues and improving pollen compatibility. The result is more reliable fruit set and higher yields while maintaining seedless fruit quality
Data Source
AI summary
The application relates to the field of plant breeding, in particular watermelon breeding. Provided are bush type, triploid watermelon plants (and seeds from which these plants can be grown) and seedless watermelon fruits produced by these plants. Also provided are bush type pollenizer plants and bush type tetraploid plants and methods for producing triploid hybrids having a bush growth type, as well as methods for producing seedless watermelon fruits of high quality.