不同品种及取材来源苎麻嫩梢水培生根特性比较  

Comparison on Rooting Characteristics of Young Shoots from Different Ramie Varieties and Sources under Hydroponics Cultivation

作　　者：陈继康[1] 朱娟娟[1] 喻春明[1] 朱爱国[1] 陈平[1] 熊和平[1] CHEN Jikang;ZHU Juanjuan;YU Chunming;ZHU Aiguo;CHEN Ping;XIONG Heping(Institute of Bast Fiber Crops,Chinese Academy of Agricultural Sciences,Changsha,Hunan 410205,China)

机构地区：[1]中国农业科学院麻类研究所,湖南长沙410205

出　　处：《中国麻业科学》2018年第6期258-263,共6页Plant Fiber Sciences in China

基　　金：中央驻湘科研机构技术创新发展专项项目(2013TF3005);国家麻类产业技术体系建设专项(CARS-16)

摘　　要：生根是苎麻水生驯化与水培工厂化育苗的第一步。针对以往研究缺乏对不同基因型及不同取材来源苎麻嫩梢水培生根特性的探讨,且嫩梢扦插繁殖系数难以提高的问题,研究以96个品种为研究对象,比较不同基因型苎麻嫩梢水培生根效果,进而分析不同来源扦插材料的生根特性差异,以期为苎麻水培工厂化育苗提供依据。研究发现,不同品种苎麻嫩梢在水生环境中生根率存在显著差异,变异范围为26. 7%～100. 0%,其中生根率90%以上的品种占49. 0%,低于80%的品种占31. 2%;大田来源的苎麻侧枝与水培苎麻种苗主茎的水培生根率(93. 3%)没有显著差异,但均显著高于大田苎麻主茎(67. 7%)。研究认为不同基因型苎麻水培生根率变异丰富,具有较强的水培驯化和改良潜力,而水培种苗主茎做水培扦插新材料是可行的。Rooting is the first step for domesticating and industrial seedling of ramie under hydroponics cultivation.Rooting characteristics of different ramie genotypes under aquatic environment remain poorly understood.Besides,it was difficult to improve the reproductive rate of ramie by traditional cuttage propagation method using young shoots.In this research,96 varieties were used for profiling the rooting characteristic of ramie and rooting traits of young shoots from different sources were compared for finding suitable material for hydroponics cultivation.Results showed that: significant differences were detected among ramie varieties (26.7%-100%),in which 49.0% varieties rooted more than 90%,and 31.2% varieties rooted lower than 80%; main stems from seedlings cultured by hydroponics had the similar rooting rate (93.3%) to side shoots of ramie from field which was much higher than main stems from field (67.7%).It suggested that abundant variations of rooting characteristics among ramie varieties give the plant high potential of domestication and improving,and main stem of ramie seedling cultured in hydroponics might be used as new source for reproducing.

关 键 词：苎麻 水培 生根 嫩梢 工厂化育苗 

分 类 号：S563.1[农业科学—作物学]