2种野生早熟禾坪用性能评价

通过室内萌发试验和田间观测对2种野生早熟禾Poa spp.的坪用性能进行了评价.结果表明,"肃南"发芽率为79%,虽然较对照"巴润"发芽率低,但已达到2级种用标准;田间出苗速率和叶色稍次于"巴润",盖度前期与"巴润"相当,后期高于"巴润",且较"巴润"叶片纤细,有更好的越冬率和抗脱水能力;引种驯化后可直接作为草坪草种推广利用."天祝"发芽率较低为48%,但叶片质地在三者中最优,抗寒能力强于"巴润"和"肃南",是优良的育种材料.

Evaluation on turf performance of two wild annual bluegrass

Turf performance of three bluegrass was evaluated by germination experiment in the petri-dish and observation in field. The results indicate that germination rate of the wild bluegrass in Sunan region is seventy-nine,although its germination rate is inferior to control Baron cultivar, it has reached to the second seeding standard; seedling emergence rate and leaf color is slightly less than Baron cultivar, coverage is equal to Baron in the early growth period and is prior to Baron at the end of the living season,at the same time, leaf length is slender and it has the better overwintering and drought resistance than Baron,therefore;it could be used as a kind of turfgrass after introduction and domestication. Germination rate of the wild bluegrass in Tianzhu is only forty-eight,but leaf length is the slenderest and the ability of overwintering is the best of three,so it is a good breeding material.