Seed price and planting method of seedless watermelon

Seedless watermelon is a triploid watermelon formed by the hybridization of diploid and induced tetraploid. due to the synapsis disorder of triploid cells during meiosis, triploid watermelon can not form seeds. but seedless watermelon is planted with seeds, but this seed is not a seed in seedless watermelon, let's take a look at the seed price and planting method of seedless watermelon.

How much is the seedless watermelon seed?

Stabs td {text-align:left;text-indent:0.5em} Variety name Packaging Specification reference Price 8 seedless watermelons per bag 1.5 yuan 2.5 yuan per bag 700 seeds of black skin seedless watermelons 65 yuan 75 yuan per bag Beiqing 9 seedless watermelons 800 grains / box 80 tons 100 yuan per box Chaochao 2 seedless watermelons 50 grams per piece 95 yuan per piece

Note: the price of seedless watermelon seeds varies with seed quality, variety, producing area and market, but it is worth noting that seedless watermelon itself has no reproductive ability and no seeds, although its cultivation techniques have something in common with ordinary watermelons, there are also differences.

How did seedless watermelon seeds come from?

1. Artificial induction: soak the seeds of diploid common watermelon with 0.2-0.4% colchicine liquid for 12 hours for 24 hours, or drop 0.2-0.4% colchicine liquid on the stem tip growth point of the seedlings at 6-7 o'clock every afternoon for four consecutive days.

2. Careful management: the treated seeds or seedlings should be washed with clean water, the plants should be placed under astigmatism during treatment and seedling retardation, and high temperature should be avoided. At the same time, good cultivation conditions and careful management should be given before survival.

3. Bagging pollination: tetraploid watermelon was used as female parent to produce triploid seeds with diploid pollen, small area seed production was bagged in the afternoon, artificial pollination in the next morning, large area seed production needed regional isolation, tetraploid female parent and diploid male parent plants were cultivated in proportion.

Seed treatment of seedless watermelon

1. Seed selection and soaking: according to the characters of the variety, the seeds were selected according to the shape, color, size and plumpness of the seeds, then the seeds were exposed to the sun for 1 day or 2 days, and then the triploid seeds were stirred in 55 ℃ warm water, then let the water cool naturally, and soak the seeds for 6 hours.

2. Artificial shell breaking: the shell breaking of seedless watermelon seeds can be divided into dry seed shell breaking and wet seed shell breaking, but the dry seed shell breaking is easy to damage the seed embryo and the soaking time and temperature are difficult to grasp, while the wet seed shell soaking time has little effect on the germination rate and is easy to grasp.

3. Seed germination: the seeds that have been soaked and broken shells are placed under the constant temperature of 33-35 ℃ to accelerate germination. After 24 hours, more than 90% of the seeds with germination ability can germinate, and the normal seeds can be germinated after 36 hours.

Planting methods of seedless watermelon

1. Seedling management: seedless watermelon requires a higher temperature from seed germination to cotyledon unearthed, which is about 3035 ℃ in daytime and 25 ℃ at night. When the seedlings arch soil, remove the plastic film in time, ventilate and cool down after emergence, prevent the seedlings from growing too much and promote the Hypocotyl to be strong.

2. Soil preparation cultivation: seedless watermelon planting land applied high quality farm manure, urea 20kg, diammonium 20kg, potassium sulfate 20kg per mu, fine soil preparation, planting in windless and sunny days, 50000plants per mu, and watering with planting.

3. Fertilizer and water management: 5 kg urea per mu in seedless watermelon seedling stage, no watering or fertilization during flowering and fruit setting stage, 15kg urea per mu and 15 kg potassium sulfate when watermelon is as big as duck eggs, and 0.2% potassium dihydrogen phosphate is sprayed on the leaves in the later growth stage.

4. Artificial pollination: seedless watermelon adopts artificial auxiliary pollination, and the female flower is pollinated at about 8 o'clock in the morning with the male flowers of the pollinated varieties blooming on the same day. After flowering, the earlier the pollination time is, the better, no later than 10:00, the pollination should be uniform and the action should be light, so as to avoid damaging the stigma.

5. reasonable ripening: when the fruit size of seedless watermelon is large but not yet ripe, 200 mg ethephon solution per kilogram of watermelon is applied along the melon surface before and after dusk, and it can be harvested and put on the market two days later, which can be supplied to the market 3-5 days ahead of natural maturity.