Is seedless watermelon a genetically modified fruit? How was it cultivated?

Watermelons can be said to be cool in summer and there are cheap fruits, but the seeds in watermelons are troublesome. But with seedless watermelon, you don't have to worry about spitting seeds. Is seedless watermelon a genetically modified fruit? How was it cultivated?

I. the basic situation of seedless watermelons

1. The producing area of seedless watermelon

Generally speaking, the probability of seedless watermelons in nature is very low, and the seedless watermelons sold on insomnia are hybridized by biotechnology, so seedless watermelons are produced and cultivated in most parts of our country.

two。 The price of seedless watermelons

(1) the wholesale price of seedless watermelon in Suzhou, Anhui is 1.1-1.4 yuan / jin; the wholesale price of Heihua seedless watermelon in Shaanxi is 0.9 yuan / jin, starting at 10,000 jin; the following table shows the reference prices of seedless watermelon in some areas.

Product Name

Quotation market

Price

Seedless watermelon

Tianhui supermarket

7.6

Seedless watermelon

Wuxi Xicheng Fruit Wholesale Market

4.54

Seedless watermelon

Beijing Dayang Road Agricultural products Wholesale Market

5.1

(2) the price of 50g/ barrel No. 2 seedless watermelon in Weifang, Shandong Province is 79 yuan for 1-30 pieces, 75 yuan for 31-49 pieces, 70 yuan for more than 50 pieces, 180 yuan for 1-19 bags of Jingling small seedless watermelons in Beijing, 166yuan for 20-99 bags, 153yuan for more than 100 bags.

3. Varieties and yield per mu of seedless watermelon

There are also many varieties of seedless watermelon, and the yield per mu is different under different cheering Tianjiao and management techniques. For example, Dongting No. 1 seedless watermelon has a yield of 3500-5000 kg per mu, while Guangxi No. 5 seedless watermelon has a yield of about 3000 kg per mu.

Is seedless watermelon a genetically modified fruit?

Transgenic technology is a technology to extract specific biological genes, artificially synthesize DNA fragments of specified sequences, recombine and breed to produce new varieties. This technology has been widely used in the fields of medicine and food, but there have been many cases and topics about the risk of cancer caused by genetically modified food this year, so people are also very confused about whether seedless watermelon is genetically modified or not.

Here, I would like to tell you that seedless watermelon is planted with seeds, is a hybrid of diploid and induced tetraploid watermelon, so seedless watermelon is not genetically modified, we can rest assured to eat.

Third, how is the seedless watermelon cultivated?

Seedless watermelon is cultivated by artificially induced polyploidy.

1. The seeds or seedlings of diploid watermelon were treated with colchicine (a plant alkali) to hinder the formation of spindle filaments and primary walls in the middle of cell division, so that the replicated chromosomes could not be divided into poles and formed secondary walls in the middle. As a result, the cells with double genome were formed, and the tetraploid watermelon plant was obtained by doubling the genome of common diploid watermelon.

two。 Then hybridized with diploid watermelon plants (as male parents) to get triploid seeds, triploid seeds developed into triploid plants, due to the loss of synapsis of homologous chromosomes in the process of reduction, can not form normal germ cells. Then the mature pollen of diploid watermelon is used to stimulate the ovary of triploid plant to form triploid fruit, which is called triploid seedless watermelon because its ovule can not develop into seed.

So although a lot of GM food safety performance can not be completely guaranteed, but can rest assured that seedless watermelon is not genetically modified, so the majority of "onlookers" can rest assured to eat boldly.