Compact Watermelon Pollenizer SP-4 for Seedless 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 line SP-4, a diploid inbred line with high pollenizing capacity, resistance to Fusarium wilt and Anthracnose, and unique characteristics such as lacy branches and small, brittle fruits, allowing for closer planting and improved pollination efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If diploid pollenizer plants are planted at 25-33% of field surface to provide adequate pollination, then pollination capacity is sufficient, but field space for seedless watermelon production is reduced and resource competition increases

Engineering Contradiction:

Improveyield of seedless watermelonVSAvoidfield space occupied by pollenizers

Core Design Contradiction:

ProductivityVSArea of stationary object

Solution Approach 1:

The patent changes the phenotypic parameters of diploid pollenizer plants by selecting for compact growth habits, smaller plant size, and reduced vine spread. This allows pollenizer plants to occupy less field space while maintaining adequate pollination capacity through increased plant density or strategic positioning near triploid plants.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent applies local quality by creating zones of different plant densities - higher concentration of pollenizer plants in areas where pollination demand is greatest, and reduced density where seedless watermelon production is prioritized. This spatial differentiation optimizes both pollination service and crop yield.

Inventive Principle:

Principle #3Local quality

2Productivity

If high yield marketable diploid watermelon varieties are used as pollenizers, then pollenizing capacity is improved, but competition with triploid plants for sun, nutrients, and space increases

Engineering Contradiction:

Improvepollenizing capacityVSAvoidresource competition

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent modifies resource consumption parameters of pollenizer plants by selecting varieties with lower nutrient requirements, reduced photosynthetic demand, and smaller root systems. This allows maintaining high pollen production while reducing competitive impact on triploid plants for sunlight, water, and soil nutrients.

Inventive Principle:

Principle #35Parameter changes

3Area of stationary object

If diploid pollenizer plants are planted in close proximity to triploid plants, then field surface area required for pollenizers is decreased, but disease transmission risk may increase

Engineering Contradiction:

Improvefield surface area for pollenizersVSAvoiddisease resistance

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent changes the disease resistance parameters of pollenizer plants by selecting for enhanced immunity against common watermelon pathogens. This allows close planting arrangements that reduce field space while maintaining adequate disease resistance through genetic selection for pathogen resistance traits.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS7550652B2Watermelon pollenizer SP-4

Publication Date: 2009.06.23 SYNGENTA SEEDS LLC

AI summary

The present invention provides a novel watermelon line designated SP-4, and method for pollinating seedless watermelon plants. The present invention also provides methods for producing triploid, seedless watermelon fruit.