Why are there cracks in watermelon? Cut the watermelon, and the cracks inside are like Mercedes-Benz signs.

Reasons for cracks in watermelon:

1. The cellulose content in watermelon peel is not high, and it does not form bundles of fibers, which can not be tightly connected into a whole like kiwi peel and apple peel, and at the same time, the "pulp" is limited.

2. Excessive lignin accumulation in watermelon skin will reduce the strength of watermelon skin and promote cracking.

3. There is a certain pressure on the watermelon pulp itself. In fact, the cracking of watermelon after maturity is of great benefit to attracting animals to spread seeds.

4. Watermelon likes warm and dry climate and is not cold-resistant. The optimum temperature for growth and development is 24-3 degrees, the optimum temperature for root growth and development is 3-32 degrees, and the minimum temperature for root hair generation is 14 degrees. Watermelon needs a large temperature difference between day and night during its growth and development. Watermelon is drought-tolerant and moisture-intolerant, and it is susceptible to diseases when there are too many rainy days and the humidity is too high. Watermelon likes light and has a long growth period, so it needs a lot of nutrients.

Extended information:

Watermelons can be divided into fresh watermelon and seed watermelon. The selected watermelon varieties are mostly fresh watermelons, which are the main types of watermelon cultivation and have the highest utilization of heterosis among watermelon varieties. Seed watermelon has strong adaptability, high lateral vine seed setting rate and extensive management, and its seed selection is the same as that of fresh watermelon. Inner Mongolia, Gansu, Xinjiang and other provinces are the main producing areas of seed watermelon in China.

Watermelon pulp: protein, glucose, sucrose, fructose, malic acid, citrulline, glutamic acid, arginine, phosphoric acid, glycine, propionic acid, ethylene glycol, betaine, adenine, sucrose, carotene, tomato hydrocarbon, hexahydrotomato hydrocarbon, vitamins A, B, C, and volatile components contain various aldehydes.

Baidu encyclopedia-watermelon