猫尾草不同品种的种子产量和适应性评价

Phleum pratense variety seed yield and adaptability

测定了8个猫尾草品种在各试点的物候期、种子产量等指标。运用多点区域试验的方差分析法,分析了品种间、试点间、品种×试点互作间差异显著性;用通径分析法分析了种子产量各构成因素对种子产量的贡献大小。结果表明,Climax和Commonl最适应于榆中,种子产量分别为543.76和476.95kg/hm2;岷山、日本、Richmond最适应于岷县点,种子产量分别为280.90,156.51和150.34kg/hm2;Barwa最适应于景泰点,种子产量达867.86kg/hm2。在种子产量各构成因素中,单穗粒重对种子产量的影响最大。

Indexes for aspects including growth stage and seed yield were determined for eight Phleum pratense varieties at different experimental sites. Analysis of variance was used to analyse difference significance among varieties, experimental sites and variety×experimental sites. Path analysis was used to analyse the contribution size of different factors affecting seed yield. The results showed that Climax and Commonl varieties were most suitable for cultivation in Yuzhong County, where seed yields were 543.76 and 476.95 ( kg/hm^2), respectively. Minshan, Japan and Richmond were most suitable for cultivation in Minxian, where seed yields were 280.90, 156.51 and 150.34 ( kg/hm^2), respectively. Barwa was most suitable for cultivation in Jingtai County, where seed yield was 867.86 ( kg/hm^2). Among the factors affecting seed yield, the single-spike grain weight had the biggest influence.