饲用型燕麦品种(系)在南京地区的适应性评价OA

To identify superior forage oat varieties adapted to southwestern Jiangsu Province,this study assessed 18 oat varieties(lines)from different sources by measuring 14 agronomic traits and production perfor-mance including plant height,stem diameter,leaf length,leaf width,the second internode length,the third internode length,tiller number,spike length,spikelet number,grain number per panicle,1 000-grain weight,fresh weight per plant,dry weight per plant,and fresh forage yield.10 oat varieties(lines)exhibiting superior adaptability were preliminarily selected through weighted screening based on fresh forage yield,dry and fresh weight per plant.These selected varieties(lines)were subsequently analyzed for 6 quality related indicators:acidic detergent fiber content,neutral detergent fiber content,crude protein content,crude fiber content,ether extract content,and relative feed value.Finally,a comprehensive evaluation of agronomic traits,production performance and nutritional quality across oat varieties(lines)was conducted using correlation analysis and grey correlation analysis.The results showed that among the 18 oat varieties(lines),As004 exhibited the highest fresh forage yield(95 000 kg/hm2),while As003 had the maximum dry weight per plant(10.62 g).Agronomic traits varied considerable across the oat varieties(lines),with the grain number per panicle showing the highest coefficient of variation.Among the 10 selected varieties(lines)with stronger adaptability,As001,As003,and As010 exhibited higher crude protein content,while As001,As011,and As015 had higher relative feed value.Correlation analysis revealed that fresh forage yield was highly significantly positively correlated with 1 000-grain weight(P<0.01).Grey correlation analysis indicated that crude fiber,plant height,and relative feed value had higher correlation coefficients among all measured indicators.Varieties(lines)of As001,As002,As003,and As015 showed higher equal-weighted and weighted relational grades,indicating a better perfor-mance in agronomic traits,production and nutritional quality.Notably,As003 and As015,which excelled across multiple traits,can be recommended as preferred forage oat varieties(lines)for cultivation and extension in the southwestern region of Jiangsu Province.