SP-6 Watermelon Pollenizer Phenotype for Yield
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Solution Overview
Problem
Current methods for producing seedless watermelons require a high ratio of diploid pollenizer plants to triploid plants, competing for resources and space, and lack sufficient pollenizing capacity and disease resistance.
Innovation Solution
Development of the watermelon variety SP-6, a diploid inbred line with high pollenizing capacity, resistance to Zucchini Yellow Mosaic Virus, Fusarium wilt, Powdery Mildew, and Anthracnose, and unique phenotypic characteristics such as lacy branches and small, non-overlapping leaves, which allows for closer planting and improved field efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If diploid pollenizer plants are planted at 25-33% of field surface to pollinate triploid watermelon plants, then adequate pollenization is achieved, but the diploid plants compete with triploid plants for sun, nutrients, and space, reducing overall crop value
Solution Approach 1:
The invention changes the phenotypic parameters of the diploid pollenizer plant by introducing the e gene, which causes leaves to be smaller and more deeply lobed. This parameter change reduces the leaf surface area and overall plant size, allowing more pollenizer plants to be planted per unit area without increasing resource competition, thereby maintaining pollenization capacity while increasing field productivity
Solution Approach 2:
The invention segments the field into a higher density of smaller planting units by reducing individual plant size through the e gene phenotype. This segmentation allows more plants to occupy the same field area, effectively converting a 25-33% pollenizer ratio into a much higher density arrangement where pollenizer plants are interspersed more frequently among triploid plants
2Quantity of substance
If high yield marketable diploid watermelon varieties are used as pollenizers, then pollenization is sufficient, but these varieties compete with triploid seedless varieties for resources and space
Solution Approach 1:
The invention applies parameter changes by modifying the phenotypic characteristics of diploid pollenizer plants through the e gene, resulting in smaller leaves with deeper lobes and reduced overall plant size. This allows the same pollen production capacity to be achieved in a smaller physical footprint, reducing the field surface area required for pollenizer plants
Solution Approach 2:
The invention transitions from considering only horizontal field area to incorporating vertical plant architecture dimensions. By creating a more compact, vertically-oriented plant structure with smaller, deeply lobed leaves, the pollenizer plants occupy less horizontal space while maintaining pollen production capacity
3Productivity
If diploid pollenizer plants are planted in close proximity to triploid plants to share field surface, then field efficiency is improved, but pollenizing capacity may be insufficient
Solution Approach 1:
The invention changes the phenotypic parameters of the pollenizer plant to create a compact structure with smaller, more numerous leaves that are more deeply lobed. This parameter change increases the surface area-to-volume ratio and creates more accessible flowering sites, maintaining pollen transfer efficiency even at higher planting densities
Solution Approach 2:
The invention creates a dynamic planting system where the compact phenotype of the e gene pollenizer allows flexible adjustment of planting density. The plant's smaller size and different architecture enable it to adapt to closer spacing while maintaining reproductive function and pollen availability
4Reliability
If more diploid pollenizer plants are planted to increase pollenizing capacity, then pollen transfer is improved, but the ratio of diploid to triploid plants increases, reducing seedless watermelon yield
Solution Approach 1:
The invention applies parameter changes by modifying the phenotypic characteristics of diploid pollenizer plants through the e gene, resulting in smaller leaves with deeper lobes and reduced overall plant size. This parameter change reduces the leaf surface area and overall plant size, allowing more pollenizer plants to be planted per unit area without increasing resource competition, thereby maintaining pollenization capacity while increasing field productivity
Data Source
AI summary
The present invention provides a novel watermelon variety designated SP-6, and method for pollinating seedless watermelon plants. The present invention also provides methods for producing triploid, seedless watermelon fruit.