SELECTION FOR TOLERANCE TO BOTH DROUGHT AND FROST AMONG A LARGE NUMBER OF BERMUDAGRASS (CYNODON SPP.) ECOTYPES COLLECTED FROM DIFFERENT CLIMATIC ZONES
As a warm-season grass,bermudagrass (Cynodon spp.) has been widely used as turf and/or pasture in most parts of the world; however,drought and frost are two of the most important abiotic factors that can reduce growth and performance.Drought and frost tolerance of 432 bermudagrass ecotypes collected from 4 climatic zones of Australia with 5 different ranges of Potential Frost Days (PFD) were assessed in a field experiment in Southeast Queensland,Australia.Turf quality (TQ) and leaf death were scored after a drought period in 2010 and a frost period in 2011,respectively.Using cluster analysis,all the genotypes were classified into 10 groups based on TQ and leaf death ratings scored in both environments.Group 1 included 45 genotypes which were considered as drought and frost tolerant had higher average TQ and lower average leaf death than other groups.No commercial cultivars were placed in this group.The regions that provided the highest frequency of genotypes in the drought and frost tolerant group were the Mediterranean climatic zone and the regions with 30-40 and 40-50 PFD.
Australia resistance warm-season water
Yi Zhou Shu Fukai Donald S. Loch Ian D. Godwin Christopher J. Lambrides
School of Agriculture and Food Sciences,The University of Queensland,St Lucia Campus,St Lucia,QLD 4072,Australia
国际会议
The 12th International Turfgrass Research Conference(第十二届国际草坪学术大会)
北京
英文
795-800
2013-07-14（万方平台首次上网日期，不代表论文的发表时间）