蝴蝶兰主要数量性状DUS测试性能研究  

Study on Testing Performance of Main Quantitative Characters for DUS Test in Phalaenopsis

作　　者：钟海丰[1] 陈剑锋[1] 陈宇华[1] 邱思鑫[1] 黄敏玲[1] ZHONG Hai-feng;CHEN Jian-feng;CHEN Yu-hua;QIU Si-xin;HUANG Min-ling(Crop Research Institute,Fujian Academy of Agricultural Sciences,Fuzhou Sub-center for New Plant Variety Tests,Ministry of Agriculture and Rural Affairs,Fuzhou 350013,Fujian China)

机构地区：[1]福建省农业科学院作物研究所,农业农村部植物新品种测试福州分中心,福建福州350013

出　　处：《东南园艺》2019年第6期14-21,共8页Southeast Horticulture

基　　金：福建省属公益类科研院所基本科研专项(2017R1026-8);农业农村部物种品种资源保护费项目(111821301354052256)。

摘　　要：探讨蝴蝶兰数量性状的测试性能,有利于提高测试准确性和测试效率。本研究通过种内稳定性、种间差异性、R型聚类分析以及性状相关性分析,对蝴蝶兰20个主要数量性状的测试性能进行分析。结果表明,蝴蝶兰不同数量性状的种内变异系数在5.07%~22.50%之间,Char4(花序长度)、Char5(花序花数量)、Char6(花序梗长度)等3个性状在种内表现不够稳定。不同数量性状的种间变异系数在8.22%~45.31%之间,Char3(叶片宽度)、Char7(花序梗粗度)、Char14(唇瓣中裂片长度)、Char17(叶片厚度)、Char18(合蕊柱长度)、Char19(合蕊柱粗度)等6个性状的种间区分能力较弱;通过性状的R型聚类分析和相关性分析表明,Char8(花朵长度)、Char9(花朵宽度)、Char10(萼片长度)、Char11(萼片宽度)、Char12(花瓣长度)与Char13(花瓣宽度)均呈极显著相关性,且相关系数均大于0.9。因此,Char17(叶片厚度)、Char18(合蕊柱长度)、Char19(合蕊柱粗度)在蝴蝶兰测试指南中作为选测性状是合理的。Char3(叶片宽度)、Char7(花序梗粗度)、Char14(唇瓣中裂片长度)、Char11(萼片宽度)、Char13(花瓣宽度)等5个性状可由必测性状调整为选测性状。Char4(花序长度)、Char5(花序花数量)、Char6(花序梗长度)等性状的种内稳定性可能与催花条件有关。To study the Testing performance of quantitative characters for DUS test in Phalaenopsis was helpful to improve the test accuracy and efficiency.In this study,the test performance of 20 main quantitative characters of Phalaenopsis was analyzed through intra-species stability,inter-species difference,R-type cluster analysis and character correlation analysis.The intra-specific coefficient of variation of different quantitative characters were 5.07%-22.50%,and intra-specific performance of the three characters of Char4(inflorescence length),Char5(number of flowers)and Char6(peduncle length)were not stable.Inter-specific coefficient of variation of different quantitative characters were 8.22%-45.31%,Char3(Blade width),Char7(peduncle diameter),Char14(length of middle lobe of lip),Char17(blade thickness),Char18(length of synecium column),Char19(diameter of synecium column)had weak ability to distinguish the species.The R-type cluster analysis and correlation analysis showed that Char8(flower length),Char9(flower width),Char10(sepal length),Char11(sepal width),Char12(petal length)and Char13(petal width)were very significant correlation,and the correlation coefficient were all greater than 0.9.The characters of Char17(blade thickness),Char18(length of synecium column)and Char19(diameter of synecium column)are reasonable as the optional characters in the Phalaenopsis test guide.Char3(blade width),Char7(peduncle diameter),Char11(sepal width),Char13(petal width)and Char14(length of middle lobe of lip),could be adjusted from required to optional characters.The intra-specific stability of Char4 (inflorescence length),Char5(number of flowers),and Char6(peduncle length)may be related to flower forcing conditions.

关 键 词：蝴蝶兰 数量性状 测试性能 稳定性 相关性 

分 类 号：S682.31[农业科学—观赏园艺]