【摘要】 采用灰色关联度分析法对18个柱花草品系的8个农艺性状进行综合评价。结果表明,品系TPRC 2001-47、TPRC 2001-46和TPRC 2001-71的综合表现最好,其中有6个品系优于对照热研2号。等权关联度与加权关联度分析结果基本一致,分析结果与柱花草的实际表现一致。不同性状与鲜草产量的关联度不同,7个性状与鲜草产量的关联度排序为:干物率>第1分枝日平均生长速度>株高日平均生长速度>刈割时株高>越冬存活率>刈割时第1分枝长>草丛宽。更多还原

【Abstract】 Grey relational analysis was applied for comprehensive evaluation of 8 agronomic characters of 18 cultivars/lines of Stylo(Stylosanthes guianensis).The results show that the Stylo cultivars/lines TPRC 2001-47,TPRC 2001-46 and TPRC 2001-71 were best in comprehensive performance,and that 6 of all Stylo cultivars/lines were better than the Stylo cultivar Reyan 2(S.guianensis cv.Reyan 2)(CK).The results of equally weighted relational grade and weighted relational grade were identical and coincided with actual performance of the Stylo cultivars/lines.The agronomic characters had different relational grade against the fresh yield,and the relational grade between the 7 agronomic characters and the fresh yield was ranked in the order of dry matter > daily mean growth rate of the first branch > daily mean height growth rate > height at cutting > wintering survival rate > the length of the first branch at cutting > grass width.更多还原