The kinetics of K+ absorption and the utilization of both applied K and K in a calcareous alluvisol with low available K by different genotypes of grain amaranth (Amaranthus spp.), an ancient pseudo-cereal that produc...The kinetics of K+ absorption and the utilization of both applied K and K in a calcareous alluvisol with low available K by different genotypes of grain amaranth (Amaranthus spp.), an ancient pseudo-cereal that produces a large biomass and a rich source of healthy nutrients and mineral elements, were studied by means of ion depletion technique and pot experiments. Grain amaranth had a high affinity for K+ uptake in comparison with corn and cotton. However, there were differences among Amaranthus spp. in K absorption and utilization. Some cultivars such as R104, CX-4, Du001, Hy015 and Hr029 which had a higher rate of K absorption and stronger affinity for K+ were typical varieties with high K-use efficiency (KUE). The results showed that high KUE cultivars grew quickly, possessed stronger ability to take up soil slowly available K and mineral K, and did not respond to K fertilization in the soil with low available K. Correspondingly, grain amaranth cultivars CX-77, Cr024, Vd001, Re003 and Sn003 were relatively low in KUE. Compared with high KUE cultivars, they took up more soil available K and both of their dry matter accumulation and K uptake responded to K applied significantly.展开更多
The eye is one of the important organs for human beings to obtain information from the outside world and avoid harm,and 90%of human knowledge is obtained through the eye.The center of the retina in the human eye is ca...The eye is one of the important organs for human beings to obtain information from the outside world and avoid harm,and 90%of human knowledge is obtained through the eye.The center of the retina in the human eye is called the macula,and it is the area where vision is most concentrated.Current research suggests that macular pigment is mainly composed of lutein,zeaxanthin,and meso-zeaxanthin,which are able to absorb and attenuate blue light damage to the retina,and since humans cannot synthesize these carotenoids,they must be obtained by supplementing with carotenoid-rich foods.In addition,carotenoids also provide good provitamin A,which provides necessary nutritional support for people’s visual transduction.Therefore,eye health is inseparable from carotenoid supplementation,among which wolfberry,which is rich in a variety of carotenoids,has been confirmed by recent studies to have a good role in promoting eye health,and also provides a good source of natural carotenoids for humans.However,a systematic review of goji berry carotenoids in eye health is lacking in current studies.Based on this,this paper reviews the main carotenoid composition and its extraction and purification in wolfberry,discusses the changes of carotenoids in the process of harvesting and drying wolfberry,reviews the absorption and utilization of carotenoids in wolfberry,and more importantly,discusses the important role of carotenoids in wolfberry in eye health.展开更多
文摘The kinetics of K+ absorption and the utilization of both applied K and K in a calcareous alluvisol with low available K by different genotypes of grain amaranth (Amaranthus spp.), an ancient pseudo-cereal that produces a large biomass and a rich source of healthy nutrients and mineral elements, were studied by means of ion depletion technique and pot experiments. Grain amaranth had a high affinity for K+ uptake in comparison with corn and cotton. However, there were differences among Amaranthus spp. in K absorption and utilization. Some cultivars such as R104, CX-4, Du001, Hy015 and Hr029 which had a higher rate of K absorption and stronger affinity for K+ were typical varieties with high K-use efficiency (KUE). The results showed that high KUE cultivars grew quickly, possessed stronger ability to take up soil slowly available K and mineral K, and did not respond to K fertilization in the soil with low available K. Correspondingly, grain amaranth cultivars CX-77, Cr024, Vd001, Re003 and Sn003 were relatively low in KUE. Compared with high KUE cultivars, they took up more soil available K and both of their dry matter accumulation and K uptake responded to K applied significantly.
基金supported by the National Key research and Development Program of china(2023YFF1103802).
文摘The eye is one of the important organs for human beings to obtain information from the outside world and avoid harm,and 90%of human knowledge is obtained through the eye.The center of the retina in the human eye is called the macula,and it is the area where vision is most concentrated.Current research suggests that macular pigment is mainly composed of lutein,zeaxanthin,and meso-zeaxanthin,which are able to absorb and attenuate blue light damage to the retina,and since humans cannot synthesize these carotenoids,they must be obtained by supplementing with carotenoid-rich foods.In addition,carotenoids also provide good provitamin A,which provides necessary nutritional support for people’s visual transduction.Therefore,eye health is inseparable from carotenoid supplementation,among which wolfberry,which is rich in a variety of carotenoids,has been confirmed by recent studies to have a good role in promoting eye health,and also provides a good source of natural carotenoids for humans.However,a systematic review of goji berry carotenoids in eye health is lacking in current studies.Based on this,this paper reviews the main carotenoid composition and its extraction and purification in wolfberry,discusses the changes of carotenoids in the process of harvesting and drying wolfberry,reviews the absorption and utilization of carotenoids in wolfberry,and more importantly,discusses the important role of carotenoids in wolfberry in eye health.
