Are yellow flesh watermelons and seedless watermelons on the market genetically modified? How did you grow it? How much is the price per jin?

Yellow flesh watermelons, commonly known as "black tendons", are mostly planted along the coast and plains; seedless watermelons are triploid, have no reproductive ability, and have no seeds. So are they genetically modified? How did you grow it? How much is the price per jin?

Are yellow flesh watermelons and seedless watermelons genetically modified?

1. In fact, the yellow flesh is not caused by hormones, and of course, it is not caused by the use of transgenic technology. Whether it is wild watermelon or cultivated watermelon, the color of melon flesh ranges from white, light yellow, bright yellow, pink, orange to bright red, so there is no need to bother to study genetically modified technology to change color.

2. Seedless watermelon is not genetically modified, but an ordinary hybrid watermelon using special parent materials.

There are two kinds of seedless watermelons, one is triploid seedless watermelon, which uses tetraploid watermelon as female parent and diploid watermelon as male parent (detailed breeding principle has been introduced above); the other is chromosome ectopic seedless watermelon, which is made by using ectopic homozygote as female parent and common diploid as male parent.

Transgenic is a new biotechnology of innovative breeding materials. In the future, it is possible to use this technology to transform the parents of seedless watermelons, and there may also be transgenic seedless watermelons.

How are yellow flesh watermelons and seedless watermelons grown?

The main results are as follows: 1. Watermelon fruit is a ladyfruit, which is developed from ovary fertilization. The whole fruit consists of three parts: peel, pulp and seed. Among them, the pericarp develops from the chamber wall, the pulp develops from the placenta, and the seed develops from the ovule after fertilization. Different varieties of watermelons have a variety of shapes, sizes, skin colors, patterns and flesh colors. These characteristics are often used as the main basis for identifying varieties.

2. The seeds needed to cultivate seedless watermelon are triploid watermelon seeds. Triploid watermelon seeds have a thick hard seed shell of tetraploid seeds with a high degree of cork, especially in the thick beak and tight mouth. The seed embryo is not fully developed, the weight of the seed embryo is low, the embryo weight accounts for only 38.5% of the seed weight (the diploid seed embryo accounts for 50% of the seed weight), the seed embryo volume accounts for 60% of the seed shell cavity, and there is a considerable proportion of abnormal embryos, such as large and small embryos and folded embryos. Due to the above reasons, under the condition of natural germination, the radicle of triploid seeds is not easy to drill out of the seed shell, so the germination rate is low. In order to overcome the above difficulties, measures need to be taken to promote germination.

How much is the price of yellow flesh watermelon and seedless watermelon per jin?

1. Seedless watermelons are more expensive on the market, reaching about 7.5 yuan / kg, but because of their large size, they are not very popular with the public.

2. The market price of yellow-stuffed watermelons is higher than that of red-stuffed watermelons, which is usually 3-4 yuan per jin. In fact, 20 or 30 years ago, watermelons with yellow flesh were more common. At that time, most of the melon farmers kept their own seeds and planted them themselves, and the yellow flesh melons could always be mixed in the melon pile.

Attached: the selection and purchase method of watermelon

1, look at the peel: flower skin melons, to clear lines, deep light clear; black skin melons, to skin color jet black, with luster.

2. Look at the head and tail: both ends are symmetrical, the navel and the melon pedicle are deeply sunken, and the four sides are full of good melons; those with large heads and small tails or thick heads and tails are poor quality melons.

3. Look at the stalk: green, ripe melons; dark brown, shedding hairs, bending and crisp, curled beard tips yellowing and withering, melons picked before ripening; the stalks have withered, they are "dead vine melons", and the quality is poor.

4. The higher the maturity, the lighter the weight of watermelon. For watermelons of the same size, the lighter ones are better, while the overweight ones are raw melons.

5. Hold the watermelon in your hand and gently tap with your fingers to make a crisp sound of "knock, knock". The hands of the melon feel some tremor, which is a ripe melon; the sound of "sudden, sudden" is a reflection of a relatively high degree of maturity; the sound of "poof, poof" is an over-ripe sweet potato; the sound of "tap" is raw melon.