‘桂南’狗牙根的选育  

Research on breeding of the new variety Cynodon dactylon‘Guinan’

作　　者：黄春琼[1] 刘国道[1] 罗丽娟[2] 王文强[1] 杨虎彪[1] HUANG Chunqiong;LIU Guodao;LUO Lijuan;WANG Wenqiang;YANG Hubiao(Tropical Crops Genetic Resources Institute,Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China,Ministry of Agriculture and Rural Affairs,Haikou 571101,Hainan,China;College of Tropical Crops Hainan University,Haikou 570228,Hainan,China)

机构地区：[1]中国热带农业科学院热带作物品种资源研究所/农业农村部华南作物基因资源与种质创制重点实验室,海南海口571101 [2]海南大学热带作物学院,海南海口570228

出　　处：《草业科学》2023年第8期2099-2105,共7页Pratacultural Science

基　　金：海南省自然科学基金(322RC770、323RC536、2019RC313);科技基础资源调查专项“中国南方草地牧草资源调查”(2017FY100600);国家现代农业产业技术体系(CARS-34)。

摘　　要：中国野生狗牙根(Cynodon dactylon)种质资源非常丰富,但育成品种较少。为选育更多优良狗牙根新品种以供草坪建植应用,中国热带农业科学院热带作物品种资源研究所自2000年起开展了狗牙根新品种的选育研究,从国内外收集的狗牙根种质资源中筛选出坪用性状优良的种质,经过连续多次单株选择和扩繁、坪用价值系统评价、品种比较试验、区域试验及生产性试验,选育出坪用性状优良的狗牙根新品种‘桂南’狗牙根,于2020年审定通过。‘桂南’狗牙根具有质地细腻、草坪密度大、均一性好、绿色期长、成坪速度快等特点。适于在我国长江中下游及以南地区作为景观绿化和水土保持草坪建植。本研究对‘桂南’狗牙根的选育过程、品种特征特性、栽培技术要点等进行总结,为‘桂南’狗牙根新品种的推广利用提供科学依据。Germplasm resources for Cynodon dactylon are abundant in China;however,only a few breeds have been bred.To breed new varieties of C.dactylon for lawn construction,researchers at the Tropical Crops Genetic Resources Institute,Chinese Academy of Tropical Agricultural Sciences,have been developing new varieties of C.dactylon since 2000.Wild plants with excellent turf characteristics were selected and collected from Dongxing,Guangxi from a large number of wild C.dactylon germplasm resources collected from China and abroad.Through continuous individual selection and propagation,a systematic evaluation of turf value,variety comparison tests,regional tests,and productivity tests,using the germplasm as the parent,C.dactylon‘Guinan’was bred using systematic screening methods and registered with the National Committee for Grass Cultivar Examination and Approval in 2020.C.dactylon‘Guinan’is a new turfgrass variety with excellent turf characteristics,including fine texture,high density,good uniformity,long green days,and high turf-forming speed.It is suitable for planting in the middle and lower reaches of the Yangtze River and South China for landscaping as well as in soil and water conservation lawns.In the present study,the breeding background,morphological and biological characteristics,and cultivation techniques of this variety are summarized.The results of this study provide a reference for breeding new varieties of lawn grasses and a scientific basis for the popularization and utilization of the new variety of C.dactylon‘Guinan’.

关 键 词：狗牙根 新品种 形态及生物学特性 品比试验 区域试验 生产性试验 栽培技术 

分 类 号：S688.4[农业科学—观赏园艺]