DUS Testing and Agronomic Character Evaluation-screening of Important Cocksfoot (Dactylis glomerata) Germplasm
DUS testing and agronomic character evaluation-screening of 32 dominant Dactylis glomerata varieties (lines) of China were studied in this report,in order to screen excellent D.glomerata germplasm resource for southern China and the Yangtze River basin region.The tested D.glomerata varieties (lines) could been divided into early,middle and late-maturing types,according to the differences of its growth period,which ranged from 230 d to 307 d.There were obvious differences in rust resistance,summering rate,growth speed,grass yield,stem-leaf ratio,green-hay ratio and tiller numbers among tested D.glomerata varieties (lines),and the varieties of Dianbei,01472,Cristobal,Baoxing and Porto had more prominent performance.The 14 DUS characters were used to distinguish the difference of tested D.glomerata varieties (lines) here.There were a comprehensive ranking about yield,resistance and quality of tested D.glomerata,according to the results of DUS testing and agronomic characters evaluationscreening,and the 17 excellent D.glomerata varieties (lines) were selected in the end.