Symptoms During the use of high quality wheat varieties, there is often a phenomenon of mixed degradation. The purity of the seed after the degeneracy was significantly reduced, the character deteriorated, the quality deteriorated, the stress resistance decreased, and the yield significantly decreased.
The reasons for the mixed degradation of the etiological species are as follows: First, there is an artificial mixture of mechanical intermixing in wheat sowing, collection, threshing, drying, transportation, and storage. This is one of the important reasons for the confounding of wheat varieties. Second, biological hybridization occurs in natural hybrids between different varieties in the field, leading to the separation of offspring, and the emergence of undesirable individuals, destroying the consistency of the species, called biological hybrids. When the machinery is mixed, it will increase the biological mix and speed up the degradation of the species. Thirdly, when the new mutant wheat varieties are promoted, due to the effects of various natural factors, they cause certain mutations in the wheat, and there are mutation characteristics. The characters that break through the production in the production are mostly worse. Fourth, the wheat varieties themselves continue to separate Some hybrid wheat cultivars new varieties of wheat traits are not stable, the genotype of the degree of homozygosity is not high, these new varieties will continue to separate during the cultivation process, resulting in variant individuals, resulting in varieties of hybrid degradation. Fifth, the quality of selected seeds was not high. During the production process, the species was not selected according to the typical characteristics of this species.
Prevention (1) Prevention of mechanical miscellaneous harvesting of wheat seeds requires single harvest, single shipment, single drying, and separate storage. During the storage of seeds, pests, rodents, and mold must be protected. When drying, processing, and broadcasting seed, clean the tool. (2) Preventing Biology from Mixing During the wheat breeding process, we must take necessary isolation measures to prevent biological contamination. If necessary spatial isolation, that is, planting different varieties of wheat to be separated by a certain distance; time isolation by sowing at the time of sowing, so that the flowering period of different wheat varieties staggered; barrier isolation method can also be adopted through high crops, trees and other barriers, The pollen of different species cannot be transmitted to the wheat production field. (3) When selecting a species, strictly eliminate impurities. Special attention should be paid to removing plants or wheat and wheat grains that do not meet the typical traits of the variety, ie, removing impurities. Deteriorating means removing grains and plants that have been contaminated with pests and diseases and poor growth. This work is a long-term and necessary task. It must be carried out year after year to prevent the degeneration of wheat.
Natural pigments are food pigments obtained from natural resources. Pigments extracted mainly from animal and plant tissues and microorganisms (cultures), in which vegetative colorants predominate. Natural pigments not only have the function of coloring food, but also have physiological activity. At present, there are 48 kinds of edible natural pigments approved to be used in China, commonly used chili red, beet red, monascus red, cochineal red, gaolianghong, sodium copper chlorophyllin, turmeric, gardenia yellow, carotene, algal blue pigment, cocoa pigment, caramel pigment and so on.
Roselle Calyx Extract,Phycocyanin,Lutein,Butterfly Pea Flower Powder,Beta Carotene Powder,Sodium Copper Chlorophyllin
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