First, as a Kaifeng native and a melon farmer, I would like to say that the watermelons grown locally in Kaifeng are out of season long ago, and now the watermelons left a few months ago are too long, hollow and the seeds inside have sprouted. In order to prolong the shelf life of watermelons, local people in Kaifeng will choose some watermelons that have never been rained or watered before. Watermelons left in my hometown when I was a child can weigh hundreds of pounds, and some can last until the Mid-Autumn Festival, and then my mother puts them on the table in the yard to honor grandma Moon. The flesh in the middle of this hollow watermelon is definitely inedible, but the taste of the flesh near the watermelon skin is acceptable.
Second, if the watermelon is kept for too long, it will be damaged and its seeds will germinate. Seed germination is a very complicated plant physiological and biochemical process. Among them, "seed dormancy" can be used to explain why watermelon seeds do not germinate in watermelon: after the seeds are formed, the appearance and organizational structure look perfect, but the internal substances are not perfect, so it can be said that they are not fully mature. Germination must go through a "post-mature period" (usually in a dormant period). During seed dormancy, even if all external conditions for seed germination are provided, seeds will not germinate, because external factors are only conditions for change, and internal factors are the basis for change.
3. Watermelon seeds do not germinate. The reason should start with the germination process and conditions of seeds. The germination process of watermelon seeds can be roughly divided into several stages: water absorption, germination, rooting and root digging. The water absorption stage of watermelon seeds is from seed drying to water absorption and expansion. This stage needs enough water and oxygen. Seed embryo (commonly known as seed kernel) expands gradually after absorbing water, and at the same time absorbs oxygen to discharge carbon dioxide, which enhances the physiological activity of seeds. The germination stage of watermelon seeds is from seed expansion to radicle (commonly known as seed bud).
At this stage, the temperature is required to be kept at 28-30℃, the relative humidity is 98- 100%, and there is a certain dark time. During this period, if the temperature is lower than 15℃ or the water content is too high, the seed coat will accumulate water, which will lead to insufficient oxygen supply for the seed embryo and seriously affect the germination. The rooting stage of watermelon seeds is from radicle to lateral root. The peeling stage is from lateral root to seed coat. The apical nose stage is from seed coat to unearthed cotyledons. The above three stages all need higher temperature, higher humidity and sufficient oxygen. The whole process of watermelon seed germination requires relative humidity of 98 ~ 100%, temperature of 28 ~ 30℃, sufficient air and darkness 12 hours or more.
Fourth, melon seeds germinate in melons and fruits. This is the normal growth of melons and fruits. This conforms to the biological characteristics of melons and fruits, and is also determined by their characteristics. Therefore, you usually need to spend more time on planting and observing plants. Attention. In fact, in the process of this watermelon seed, the energy it stores is for better hair growth and for better rooting and germination in the future. The normal problem is that people nowadays are ignorant. But this is usually bitter and almost inedible.
It's amazing that mung bean sprouts grow in watermelons. The clever woman in Kaifeng, Henan, didn't she find that in winter in Henan, the whole plain was covered with endless "leeks"? All kinds of melon seeds can germinate as long as they are stored for a long time, the humidity is suitable and the temperature reaches 15-25 degrees. The conclusion is that everyone can eat it, but it tastes bad without nutrition. Not only melon seeds will germinate, but also vegetables and fruits such as tomatoes will germinate. Special attention should be paid to: fruit germination can be eaten, root vegetables germination can not be eaten! Germinated potatoes contain toxic solanine. If you take 200 mg at a time, you will be poisoned. Sweet potatoes and peanuts should not be eaten when sprouting. Garlic and ginger are edible when they germinate, but we should eat them quickly.
A similar situation occurred after eating a cantaloupe this summer, that is, a yellow cantaloupe similar to cantaloupe. I ate ok the other day, and the last one was in the evening. Don't mention how happy I was watching my mobile phone while eating melons. I like to eat with seeds. I feel bitter after eating one or two bites, which is similar to the feeling of raw bean sprouts. At first, I was big-hearted and didn't care. After eating, I looked at it with the light of my mobile phone. The melon seeds sprouted, thinking that there were not two left anyway, so I took out the sprouted ones and continued to eat the rest. To tell the truth, it's the first time I've met you in so many years.
Good, at least not mature. Buying watermelons in recent times is bitter. A search on the internet found that there were too many growth hormones, and watermelons were ripe before the season. It's really hot this year, even the watermelon is overheated, and the temperature has entered the watermelon. Watermelon contains water, and the water also contains sugar nutrition. As a result, watermelon seeds were born unexpectedly. This is so cool, isn't it? Buy watermelon and send bean sprouts? After eating watermelon, stir-fry a plate of bean sprouts. It's beautiful. These plants finally evolved into viviparous stage.