Scientific selection is the first hurdle for cotton production. The selection of fine varieties should follow the following three principles: First, the principle of validation. According to the national regulations, a variety approved by a national or provincial breed approval committee must enter a production application. Therefore, the certified variety must be purchased as a production seed. The second is the principle of ecological zones. The selected species should be suitable for the ecological conditions of the cotton area. The third is the principle of maturity. Due to the maturity of varieties, there are special requirements for the sowing season and the ecological area. Therefore, varieties with different ripeness cannot be sowed in season. When purchasing varieties, be sure to see the indicator of the growth period of the Ming-ming varieties. The short-season cotton cannot be sown in spring as spring cotton, and the medium-maturing and medium-early-maturing spring cotton varieties are required to be sown in the spring and cannot be considered as short-season cotton in the summer of June. broadcast.
Anthocyanidins is a kind of water-soluble natural pigments widely existing in plants in nature. They are colored aglycone obtained from the hydrolysis of anthocyanins. Most of the main colorants in fruits, vegetables and flowers are related to them. Under the condition of different PH value of plant cell vacuoles, anthocyanidins make the petals colorful. The main functions about anthocyanidins are antioxidant and free radical scavenging function, nutritional fortifier in food and natural pigment.
Anthocyanidins
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