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Effect of nutrient solutions on the development of Doritis pulcherrima in water culture

WU Cheng-hou1,HUANG Chun-yan1,JIANG Bi-yu1,LI Dong-mei2,YE Xiu-lin3(1.Guangzhou Institute of Landscape Gardening,Guangzhou 510405,China;2.Shunde Polytechnic, Foshan 528300,China;3.South China Botany Garden,Chinese Academy of Science,Guangzhou 510650,China)  
In order to explore the feasibility of water culture in Doritis pulcherrima,the effect of five kinds of nutrient solutions on the developent of this orchid was analyzed.The results showed that water culture was suitable for Doritis pulcherrima.The roots of Doritis pulcherrima could carry out adaptive growth under water culture condition and new root would grow either from the old root or from the rhizome directly.The highest survival rate was obtained from the formula Ⅴ,while the optimal rate of proliferation and the highest number of average flowers on a scape was from the formula Ⅲ in this study.For the Doritis pulcherrima industrialization production,nutrient solution should not be single,it was suggested that the young seedlings be cultured in formula V,the middle and elder plants in formula Ⅲ and at the same time formula Ⅲ be also suitable for foliar application.
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