草地学报

草地学报 ›› 2023, Vol. 31 ›› Issue (11): 3462-3471.DOI: 10.11733/j.issn.1007-0435.2023.11.025

• 研究论文 • 上一篇    下一篇

野牛草属植物新品种DUS测试指南研制

伍丰宇1,2, 邹博坤1,2, 李晓霞1,2, 钱永强1,2   

  1. 1. 中国林业科学研究院生态保护与修复研究所, 北京 100091;
    2. 国家林业和草原局草原研究中心, 北京 100091
  • 收稿日期:2023-08-23 修回日期:2023-11-03 出版日期:2023-11-15 发布日期:2023-12-01
  • 通讯作者: 钱永强,E-mail:qianyq@caf.ac.cn
  • 作者简介:伍丰宇(1995-),男,汉族,江西吉安人,硕士研究生,主要从事园林植物应用研究,E-mail:wufengyu66@163.com
  • 基金资助:
    中央级公益性科研院所基本科研专项(CAFYBB2022XA002)资助

Development of a DUS Test Guide for New Varieties of Buffalo Grass Plants

WU Feng-yu1,2, ZOU Bo-kun1,2, LI Xiao-xia1,2, QIAN Yong-qiang1,2   

  1. 1. Research Institute of Ecological Protection and Restoration Chinese Academy of Forestry, Beijing 100091, China;
    2. Grassland Research Center of the National Forestry and Grassland Administration, Beijing 100091, China
  • Received:2023-08-23 Revised:2023-11-03 Online:2023-11-15 Published:2023-12-01

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摘要： 野牛草(Buchloe dactyloides)是原产于北美草原的多年生暖季型牧草，自引种至我国后一直广泛栽植于我国西北及华北地区，其种属资源丰富，育种潜力巨大，但国际植物新品种保护联盟(International Union for the Protection of New Varieties of Plants，UPOV)及我国均无野牛草特异性、一致性和稳定性(Distinctness,uniformity,stability，DUS)测试指南。为了合理利用与保护野牛草种质资源，本研究依据UPOV以及我国相关文件规定标准，经过连续多年对8个进口商业品种、7个自主培育新品种、41个多年稳定品系共56份野牛草种质资源性状进行观测，系统性研究了野牛草表型性状的分布特点，确定了28个测试性状，包括雄花长度、种包千粒重等24个必测性状和枯黄期等4个辅助测试性状的判定标准，并在此基础上研制适应我国野牛草的DUS测试指南内容。本指南为我国野牛草性状测试、新品种的授权提供了测试技术的支撑，对今后野牛草新品种选育具有重大意义。

关键词: 野牛草, DUS, 测试, 性状

Abstract: Buffalo grass (Buchloe dactyloides) is a perennial warm-season forage grass native to North American grasslands,it has been widely planted in Northwest China and North China since its introduction to China,with rich germplasm resources and great breeding potential. However,there is no guideline for the DUS (Distinctness,uniformity,and stability) test of buffalo grass in UPOV (International Union for the Protection of New Varieties of Plants) and China. To rationally utilize and protect the germplasm resources of buffalo grass,this study systematically studied the distribution characteristics of phenotypic traits of buffalo grass after observing the traits of 8 imported commercial varieties,7 independently cultivated new varieties,and 41 multi-year stable strains,with a total of 56 buffalo grass germplasm resources,for many years,based on UPOV and China’s relevant documents and standards. We determined 28 test characteristics,including 24 compulsory characteristics such as male flower length,seed burs weight,and 4 auxiliary test characteristics such as yellowing period,and developed the content of the DUS test guide adapted to China’s buffalo grass based on this guide. This guideline provides technology support for buffalo grass characteristics testing and authorization of new varieties in China,which is of great significance to the selection and breeding of new varieties of buffalo grass in the future.

Key words: Buffalo grass, DUS, Testing, Characteristics

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