基于DUS测试指南的蕹菜个体测量性状分析与分组性状筛选  

Analysis on Individual Measurement Traits of Ipomoea aquatica and Selection of Grouping Traits Based on DUS Test Guidelines

作　　者：陈宇华[1] 陈剑锋[1] 钟声远 钟海丰[1] 林觅 刘中华[1] CHEN Yu-hua;CHEN Jian-feng;ZHONG Sheng-yuan;ZHONG Hai-feng;LIN Mi;LIU Zhong-hua(Crop Research Institute,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350013,China)

机构地区：[1]福建省农业科学院作物研究所,福建福州350013

出　　处：《福建农业科技》2024年第11期44-50,共7页Fujian Agricultural Science and Technology

基　　金：福建省人民政府、中国农业科学院“5511”协同创新工程(XTCXGC2021016);福建省农业科学院科技创新平台专项(CXPT202401);福建省农业科学院青年科技创新团队(CXTD0078)。

摘　　要：为制定蕹菜DUS测试个体测量性状分级范围、筛选蕹菜DUS测试指南备选分组性状,以24份蕹菜种质资源为材料,按照蕹菜DUS测试指南的要求开展种植试验并采集数据,统计并分析14个个体测量性状的变异程度、相关性,划分测量性状分级范围并进行主成分分析,筛选DUS测试指南分组性状。结果表明:24份蕹菜的14个个体测量性状在品种内和品种间均存在较大变异,变异系数范围分别为7.14%~17.08%和10.22%~67.9%,其中12个性状的品种间变异大于品种内变异;利用最小显著差法划分14个个体性状的分级范围,作为蕹菜DUS测试性状分级的参考;通过主成分分析得到3个主要因子,贡献率分别为46.43%、25.83%、10.79%,并以此为基础筛选出3个备选分组性状。研究可为蕹菜DUS个体测量性状分级和种质资源分类研究提供参考。In order to establish the grading range of individual measurement traits for DUS testing of Ipomoea aquatica and screen the candidate grouping characteristics of DUS test guidelines for Ipomoea aquatica,24 Ipomoea aquatica germplasm resources were used as the materials,and according to the requirements of DUS test guidelines for Ipomoea aquatica,the planting test was carried out and the data were collected.Then,the degree of variation and correlation of 14 individual metrical traits were counted and analyzed.The classification range of the metrical traits was divided and the principal component analysis was performed to screen the grouping characteristics of the DUS test guidelines.The results showed that there was significant variation in the 14 individual metrical traits within and among varieties of Ipomoea aquatica.The coefficient of variation ranged from 7.14%to 17.08% and 10.22% to 67.9%,respectively,and the variation of 12 traits among varieties was greater than that within varieties.The minimum significant difference method was used to divide the grading range of 14 individual traits,which could serve as a reference for the grading of individual metrical traits in Ipomoea aquatica DUS testing.Three main factors were obtained by principal component analysis,and the contribution rates were 46.43%,25.83% and 10.79%,respectively.Based on this,three candidate grouping traits were screened out.This study could provide reference for the grading of DUS individual metrical traits and the classification study of Ipomoea aquatica germplasm resources.

关 键 词：蕹菜 个体测量 分组性状 

分 类 号：S636.9[农业科学—蔬菜学]