为了探究自交结实海滨雀稗新品系 SP2008-2和 SP2008-3的生长特性和坪用质量,以自交不亲和海滨雀稗 Adalady 和海滨雀稗杂交种 Sea Spray 为对照,对新品系 SP2008-2和 SP2008-3开展了三年大田品比试验,从物候期、植物学特性、自交结实性、草坪密度、质地、色泽、均一性等指标进行观察、测定、分析。结果表明:SP2008-2和SP2008-3自交结实率分别为20.65%和37.67%,种子千粒重分别为0.4691 g 和0.4959g;叶色深绿,草坪密度较高,分别为2.66个分蘖/cm2和2.83个分蘖/cm2;质地细腻,叶片平均宽度分别为2.83mm 和3.03mm;抗旱性、耐热性、抗寒性、抗杂草侵占能力强,全年无明显病虫危害;成坪速度较快,以1∶5比例进行草茎条播,80~90d 即可成坪,在南京地区绿色期>250d。
In the past three years,the growth characteristics and turf quality of self-compatible sea-shore Paspalum SP2008-2 and SP2008-3 studied compared with self-incompatibility seashore paspalum Adalady and seashore paspalum hybrid Sea Spray.Phenophase,botanical characteristics,self-compatibili-ty,turf density,texture,color,uniformity and other indicators were observed,measured and analyzed. The results showed that seed setting rates of SP2008-2 and SP2008-3 were 20.65% and 37.67% and thou-sands-seed weight were 0.4691g and 0.4959g,respectively.SP2008-2 and SP2008-3 were characterized by having dark green color,high turf density and fine texture,and their ability of resistance to drought, heat,cold,weeds,pest and disease were strong.Tiller numbers of SP2008-2 and SP2008-3 were 2.66/cm2 and 2.83/cm2 and the average width of leaves were 2.83mm and 3.03mm,respectively.The speed to be lawn was fast,about 80~90 days by stems drilling of 1∶5 ratio,and green period lasted more than 250 days in Nanjing.