天麻生长发育的营养研究进展

从天麻种子萌发、营养生长及生殖阶段的营养和第二营养等方面总结了天麻营养的研究进展。结果认为,天麻种子萌发时所需营养主要靠消化侵入的紫萁小菇等萌发菌的菌丝,其次是消耗自身储存的营养物质和吸收周围溶液中的养分;营养生长时所需营养主要靠同化蜜环菌的菌丝提供;生殖发育时所需营养则依靠块茎本身所积累的大量碳水化合物。天麻的第二营养来源是天麻营养生长和生殖生长阶段均可利用的周围环境中的有机和无机营养物质。土壤中的氮、磷、钾不论是直接进入天麻块茎,或是通过蜜环菌间接进入天麻,都构成了天麻的第二营养来源,必然影响到天麻的生理活动。

Review of nutrient source studies on Gastrodia elata Bl.growth up

This paper reviewed the research deveoplopment on nutrition of Gastrodia elata Bl.from the germination nutrition of seeds,the nutrition growth,the nutrition at reproduction stage and the secondary nutrition.It was suggested that there are three ways for G.elata to get nutrition at germinating stage:to digest the hyphae of invading Mycena osmundicola,to consume its own storage nutrients,to absorb nutrient in solution.The main nutritional resource of the growth of G.elata depends on assimilating the Mycena hyphae.When G.elata enters the reproduction stage,it supplies the massive carbohydrates,which G.elata Block stem stored.The secondary nutritional resource of G.elata is organic and the inorganic nutrients in its surrounding environment which can be used during the vegetative growth and the reproduction growth stage.No matter how nitrogen,phosphorus,potassium enters G.elata block stem,they are the secondry nutritional resources and will influence G.elata physiological activity.