With three different methods,the total flavonoids from the roots of cultivated Glycyrrhiza pallidiflora Maxim.were determined and compared by ultraviolet-visible spectrophotometry.The results showed that the extract y...With three different methods,the total flavonoids from the roots of cultivated Glycyrrhiza pallidiflora Maxim.were determined and compared by ultraviolet-visible spectrophotometry.The results showed that the extract yield of total flavonoids in crude extractswas 4.54% by directdetermination method,4.27% by Al(NO3)3colorimetry method and 2.09% by AlCl3 colorimetry method.The content of total flavonoids in roots of cultivated G.pallidiflora was only 0.05%.The cultivated G.pallidiflora in Lanzhou is not unfit for the medicine source of flavonoids.展开更多
[Objectives] To reveal the effects of film mulching and open ground seedling raising on the differences between Fritillaria przewalskii Maxim. and Fritillaria pallidiflora Schrenkf., find the optimal seedling raising ...[Objectives] To reveal the effects of film mulching and open ground seedling raising on the differences between Fritillaria przewalskii Maxim. and Fritillaria pallidiflora Schrenkf., find the optimal seedling raising method, and provide scientific basis for standard seedling raising technique and protecting wild resources of Fritillaria. [Methods] This experiment counted the seedling emergence number and calculated the seedling emergence indicator and the yield. [Results] The results showed that under the condition of film mulching and open ground seedling raising, the changes of Fritillaria seedlings showed an "S" curve, conforming to the Logistic equation, and the rapid growth period appeared 5-13 d after seedling emergence. Compared with the open ground seedling raising, the seedlings of F. przewalskii Maxim. and F. pallidiflora Schrenkf. raised through film mulching emerged 2-4 d earlier, and the yield increased by 56.8% and 21.71%, respectively, and the individual quality was excellent. [Conclusions] The film mulching of F. przewalskii Maxim. and F. pallidiflora Schrenkf. has great significance to protect the wild resources of Fritillaria in Eryin Mountain Area. It is recommended to adopt the film mulching method for Fritillaria seedling raising, to reduce the yield decline due to lodging, and adopt sun-shading net covering after sowing.展开更多
文摘With three different methods,the total flavonoids from the roots of cultivated Glycyrrhiza pallidiflora Maxim.were determined and compared by ultraviolet-visible spectrophotometry.The results showed that the extract yield of total flavonoids in crude extractswas 4.54% by directdetermination method,4.27% by Al(NO3)3colorimetry method and 2.09% by AlCl3 colorimetry method.The content of total flavonoids in roots of cultivated G.pallidiflora was only 0.05%.The cultivated G.pallidiflora in Lanzhou is not unfit for the medicine source of flavonoids.
基金Supported by Talent Innovation and Entrepreneurship Project of Lanzhou City(2016-RC-130)Talent Innovation and Entrepreneurship Project of Lanzhou City(2015-RC-31)+2 种基金Key Scientific and Technological Planning Project of TCM Industry of Gansu Province(YC2014-05)Project of Science and Technology Cooperation between Gansu Academy of Agricultural Sciences and Local Areas(2017GAAS63)Key Research and Development Program of Gansu Province(18YF1NA138)
文摘[Objectives] To reveal the effects of film mulching and open ground seedling raising on the differences between Fritillaria przewalskii Maxim. and Fritillaria pallidiflora Schrenkf., find the optimal seedling raising method, and provide scientific basis for standard seedling raising technique and protecting wild resources of Fritillaria. [Methods] This experiment counted the seedling emergence number and calculated the seedling emergence indicator and the yield. [Results] The results showed that under the condition of film mulching and open ground seedling raising, the changes of Fritillaria seedlings showed an "S" curve, conforming to the Logistic equation, and the rapid growth period appeared 5-13 d after seedling emergence. Compared with the open ground seedling raising, the seedlings of F. przewalskii Maxim. and F. pallidiflora Schrenkf. raised through film mulching emerged 2-4 d earlier, and the yield increased by 56.8% and 21.71%, respectively, and the individual quality was excellent. [Conclusions] The film mulching of F. przewalskii Maxim. and F. pallidiflora Schrenkf. has great significance to protect the wild resources of Fritillaria in Eryin Mountain Area. It is recommended to adopt the film mulching method for Fritillaria seedling raising, to reduce the yield decline due to lodging, and adopt sun-shading net covering after sowing.