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以强冬性小麦品种京冬8号为对照,采用分期播种试验,分析了非光敏特早熟小麦新品种冬早5号的生长发育进程和光温特性,并探讨了播期对两种小麦品种生育期和产量的影响.结果表明,冬早5号小麦品种比对照品种京冬8号早熟3～4d,标准播期增产43.4%.冬早5号小麦品种在低温、短光照条件下也能完成正常的穗分化进程,其每经历一个穗分化期Z所用的天文日照时数、有效积温和光温积明显少于京冬8号.该品种在穗分化阶段对光照不敏感,无需经过严格的春化阶段和光照阶段,品种类型介于冬性和春性之间,冬前适播期较广,适合秋播也可以春播,这在小麦育种领域是个突破.
Taking strong winter wheat variety Jingdong 8 as control, the growth and development process and light and temperature characteristics of non-photosensitive and special precocious winter wheat variety Dongzao 5 were analyzed by staged seeding test. The effects of sowing date on the growth and development of two wheat varieties Period and yield.The results showed that winter wheat variety No.5 was 3 ~ 4 days earlier than standard cultivar Jingdong 8 and increased 43.4% by standard sowing date.The winter wheat variety No.5 was also able to complete under low temperature and short light conditions The normal ear-spike differentiation process, which experienced astronomical sunshine hours per zoospore differentiation period Z, showed that the effective accumulated temperature and light-temperature product were significantly less than that of Jingdong 8. The variety was not sensitive to light during the spike differentiation stage, Stage and light stage, the type of species is between winter and spring sex, suitable for broad winter sowing period, suitable for autumn sowing can also be spring sowing, which is a breakthrough in the field of wheat breeding.