Megachile Bee Pollination for Lactuca Seed Production
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Solution Overview
Problem
Current methods for pollination of Lactuca plants, such as lettuce, using Megachile bees are inefficient and costly due to the bees' preference for alfalfa over lettuce, leading to reduced seed production and high labor costs, as well as the need for excessive nectar sources to prevent starvation during limited flowering hours.
Innovation Solution
Incorporating a minor nectar plant, like the gold medallion flower or bluewings, which the Megachile bee prefers equally or less than Lactuca, to provide a continuous nectar source and enhance pollination efficiency, allowing for increased seed production with reduced labor and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If alfalfa is planted as a nectar source to attract Megachile bees, then bee attraction is improved, but pollination efficiency of Lactuca decreases because bees prefer alfalfa over lettuce
Solution Approach 1:
Alfalfa is planted and allowed to bloom before the Lactuca flowering period begins, providing nectar sources during bee establishment and migration. The alfalfa bloom is then terminated (cut) before Lactuca flowering starts, preventing bees from preferring alfalfa during the critical pollination window while maintaining bee populations in the system
Solution Approach 2:
The flowering period of the nectar source plant is dynamically controlled - alfalfa is allowed to bloom temporarily to attract and establish bee populations, then the bloom is cut off before Lactuca flowering begins. This dynamic management of nectar availability ensures bees are present and active during Lactuca pollination without being distracted by competing alfalfa flowers
2Productivity
If Lactuca flowers are the only nectar source, then pollination focus is improved, but bees starve during the limited flowering hours
Solution Approach 1:
Lactuca plants are treated with sugar solution before flowering to pre-load nectar reserves in the flowers. This preliminary action ensures that when bees visit during the limited flowering window, sufficient nectar is available to sustain them, preventing starvation while maintaining focused pollination activity
Solution Approach 2:
The nectar quantity parameter in Lactuca flowers is artificially enhanced by sugar solution treatment. This changes the nutritional availability parameter of the flowers, providing sufficient sustenance for bees during the brief flowering period without requiring extended bloom duration or additional nectar source plants
3Manufacturing precision
If hand pollination is used, then seed production control is improved, but working efficiency decreases due to limited flowering hours
Solution Approach 1:
Megachile bees are introduced as intermediary pollinators between the male and female Lactuca plants. These bees naturally transfer pollen during their foraging activity, replacing the need for manual pollination operations. The bees serve as a living mediator that performs pollination function continuously during flowering hours without the limitations of human working efficiency
Data Source
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AI summary
The present invention dicloses to a method of producing a Lactuca plant seed including using a Megachile bee as pollination means, and providing the a Megachile bee a minor nectar plant to have preference in flower visiting, in addition to a pollen parent Lactuca plant and a seed parent Lactuca plant and to perform a crossing of a Lactuca plant using a plant species having the preference in flower visiting equivalent to or lower than that of the Lactuca plant. According to one embodiment of the present invention, it is possible to produce a Lactuca hybrid plant seed more efficiently and economically than before while using a Megachile bee as pollination means.