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玉簪属品种 DUS 测试中数量性状的测定方法探索
邓姗1,2, 陈海荣1,2,3, 任丽1,2, 章毅颖1,2, 褚云霞1,2,3
0
(1上海市农业科学院农产品质量标准与检测技术研究所,上海 201403;2农业农村部植物新品种测试(上海)分中心,上海 201415;3上海市设施园 艺技术重点实验室,上海 201403)
摘要:
利用76份玉簪品种对19个数量性状进行筛选和分级研究,并对不同性状的测量时期和部位进行了探讨。结果表明:叶柄宽度的测试方式采取自然状态下直接测量,花序梗长度测量从基部到第一花苞片着生处的长度,苞片性状全部观测第一花苞片,花相关性状以1~3花中的完全开放花为观测对象;所有候选性状均符合DUS测试指南性状选用的条件,可分为3~9个连续的分级;植株、叶片的观测可改在开花期观测,花序相关性状则在末花期观测。
关键词:  玉簪属  数量性状  测量方法  分级  DUS
DOI:10.13430/j.cnki.jpgr.20190524004
投稿时间:2019-05-24修订日期:2020-02-10
基金项目:2018年上海市农业科学院学科建设专项
Method For Quantifying the Quantitative Traits Used For DUS Test in Hosta (Hosta Tratt.)
DENG Shan1,2, CHEN Hai-rong1,2,3, REN Li1,2, ZHANG Yi-ying1,2, CHU Yun-xia1,2,3
(1Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences,Shanghai 201403;2Plant new variety DUS Test (Shanghai) Center, Ministry of Agriculture and Rural Af airs, Shanghai 201415;3 Shanghai Key Lab of Protected Horticultural Technology,Shanghai 201403)
Abstract:
In order to establish the methods for DUS test in hosta (Hosta Tratt.), we investigated the phenotypic diversity at 19 quantitative traits in 76 varieties. The quantification period and tissue position for some phenotypic characters were analyzed. As a result, the width of petiole could be measured in its natural state, and the length of peduncle could be quantified from the base to the attach of first flower. The bracts of first flower were suitable as observation object for all characters of bract, and the 1st-3nd opening flower was optimal for quantitative traits about flower. All the candidate characters fulfilled the requirements of DUS testing and could be classified into 3 to 9 continuous grades. The characters in whole plants and the leaves could be measured at blossom, and the characters of inflorescence should be observed after the last flower opened.
Key words:  hosta (Hosta Tratt)  quantitative characteristics  measurement  grade  DUS

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