Effect of Selenium Application on the Selenium Content,Yield and Medicinal Constituents of Lonicera macranthoides
[Objective]It is to investigate the effects of selenium applications on the selenium content,yield and medicinal constituents content of Lonicera macranthoides.[Method]Using the excellent variety'Jincuilei'of Lonicera macranthoides as the test material,the method of foliar spraying sodium selenite was adopted to design the spraying selenium concentration of 0,50,100,150,200,250 mg/L and the number of times of spraying were 0 times,1 time,2 times,and 3 times.The selenium content of dried flowers,fresh flower yield,contents of chlorogenic acid and lignoceroside in dried flowers of different spraying selenium concentration and spraying times were determined.[Result]The selenium content of dried flowers,fresh flower yield,contents of chlorogenic acid and lignoceroside in dried flowers were significantly increased after selenium application,and spraying selenium concentration of 150-200 mg/L significantly increased by 192.42%-231.82%,53.14%-70.29%,16.32%-19.51%,and 14.61%-21.35%compared with that without selenium,and spraying selenium twice significantly in-creased by 226.23%,63.41%,21.45%,and 22.31%compared with no selenium.Fresh flower yield,dried flower chlorogenic acid and lignoceroside content all showed an increasing and then decrea-sing trend with increasing selenium spray concentration and number of selenium sprays,and there was a similar trend between the dried flower selenium content and selenium concentration,with an increasing trend of dried flower selenium content with increasing number of selenium sprays.[Conclusion]Selenium application can significantly increase the selenium content and yield of Lonicera macranthoides,and im-prove the quality of dried flowers.The optimum spraying selenium concentration is 150-200 mg/L,and the optimum number of selenium sprays is 2 times,that is,selenium sprayed once at the stage of pre-flower bud differentiation and once at the stage of bud initiation.
万方数据
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