Method for producing Lactuca seeds using bees of the genus Leafcutter
A production method, technology of the genus Lactuca, applied to the field of production of seeds of the genus Lactuca using bees of the genus Leafcutter, can solve the difficult problems of collecting lettuce, and achieve the effect of realizing production costs and reducing operations
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Embodiment 1
[0110] Embodiment 1: the research of auxiliary nectar plant
[0111] In the present invention, the important characteristic as the auxiliary nectar source plant is that the bees of the genus Leafcutter have a preference for visiting flowers, and the preference for visiting flowers is equal to or lower than that of plants of the genus Lactuca. Therefore, screening and research of plant species having the above-mentioned properties have been carried out.
[0112] In the test, the alfalfa leafcutter was used as the bee of the genus Leafcutter, and the lettuce was used as the plant of the genus Lactuca.
[0113] Lettuce is mainly grown in San Joaquin Valley, California, U.S.A., which has a hot and dry inland climate. In the seed collection in the San Joaquin Valley, the maximum temperature during the flowering and fruiting period of lettuce is as high as 40°C or higher, so heat resistance is a must for auxiliary nectar plants. Generally speaking, it is believed that the optimu...
Embodiment 2
[0150] Example 2: Investigation of the Starvation Tolerance of Alfalfa Leafcutter Bees
[0151] The flowers of lettuce have a special flowering habit of blooming in the early morning and closing after a few hours. Therefore, if the alfalfa leafcutter bee is directly stocked in the lettuce seed picking field, it will lose its color after the lettuce closes. Honey source. The clover leafcutter bee has the property of actively continuing to eat food on sunny days with a temperature of 25° C. or higher.
[0152] Therefore, the effect of losing the nectar source, that is, the starvation tolerance of the alfalfa leafcutter bee was evaluated.
[0153] The test was carried out as follows.
[0154] Eight pots of lettuce at the flowering stage cultivated in No. 10 pots (about 30 cm in diameter) were placed in a glass greenhouse located in Kakegawa City, Shizuoka Prefecture, and 4 pots of Myolan chrysanthemum were placed in only one glass greenhouse. The glass greenhouse not equippe...
Embodiment 3
[0170] Example 3: Investigation of Flower Visiting Frequency Based on Differences in Plant Species
[0171] The foraging activities and the frequency of flower visits of the clover leafcutter bees were investigated under the condition that lettuce, melanum chrysanthemum and summer violet were arranged in the same glass greenhouse.
[0172] The test was carried out as follows.
[0173] In a glass greenhouse located in Kakegawa City, Shizuoka Prefecture, 8 pots of lettuce at the flowering stage, 2 pots of methylene chrysanthemum, and 2 pots of summer viola were arranged in No. 10 pots.
[0174] About 100 alfalfa leafcutter bees were imported. The set temperature of the greenhouse is 35°C, which is close to the temperature of the main seed collection area.
[0175] In the test, the number (VN) of the alfalfa leaf-cutter bees who visited the flowers and the occupancy rate (VS) of the alfalfa leaf-cutter bees who visited the flowers were determined.
[0176] The results are sh...
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